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Enhancing photocatalytic efficiency and durability: Ag-modified CNS–TiO2 thin films for sustainable industrial wastewater treatment Opt. Mater. (IF 3.9) Pub Date : 2024-03-11 Harish Kuruva, Vedasri Bai Khavala, B.R. Mishra, K. Murugan, Tiju Thomas, B.S. Murty
This study explores a novel approach to address the persistent challenges encountered in recovering powder catalysts and achieving superior photocatalytic performance tailored for environmental remediation and industrial wastewater (IE) treatment. Isopropyl alcohol (IPA), chosen as the solvent through Liyanage classical equations and zeta potential measurements (−33.6 mV), sets the stage for investigating
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Effect of Fe doping on crystalline phase, structure and photocatalytic properties of TiO2 thin films Opt. Mater. (IF 3.9) Pub Date : 2024-03-10 Xiaoshuo Dong, Mamatrishat Mamat, Yiliyas Baikeli, Guodong Liu, Fuerkaiti Xiaerding
Undoped and Fe-doped TiO thin films were fabricated on Si substrates using sol-gel method. XRD and Rietveld refinement results show the anatase to rutile transition in the system. SEM and AFM spectra demonstrate that the generation of agglomeration phenomena after Fe doping provides the nucleation point for the phase transition, and the difference in the Gibbs free energies of the two phases provides
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Optimizing geometry and metal-dependent performance of Si-based Schottky plasmonic photodetectors Opt. Mater. (IF 3.9) Pub Date : 2024-03-10 Eslam Abubakr, Ashenafi Abadi, Masaaki Oshita, Shiro Saito, Tetsuo Kan
In this study, different Schottky photodetectors with a plasmonic assist which receives Near-infrared (NIR) light at room temperature were demonstrated. We achieved remarkable detection over a wide range of wavelengths through a comparative study of Schottky plasmonic photodetectors employing Au, Ti, Mo, and Cr as a Schottky metal, a diffusion barrier, an adhesion promoter, and to suppress the formation
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3-Dimensional folded nanorod chiral structure with broadband circular dichroism response Opt. Mater. (IF 3.9) Pub Date : 2024-03-10 Zi-Jin Cao, Rui Li, Yun-Xia Wang, Zheng-Lin Liu, Jia-Wei Huang, Ying Wu, Shuai Luo, Chang-Chun Yan, Cai-Qin Han
Structures that cannot coincide with their mirror image are called chiral structures, and artificial chiral structures based on plasmonic metamaterials have a wide range of applications, such as chiral sensing and biometrics. Simple methods to prepare chiral nanostructures capable of producing broadband circular dichroism (CD) effects remain a challenge. Herein, a folded nanorod structure is proposed
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Effects of Na+, Ga3+ introduction on the luminescence properties of LiAl4O6F: Mn4+ red fluorescent materials Opt. Mater. (IF 3.9) Pub Date : 2024-03-10 Huiming Zhao, Yanji Zhang, Wenxia Li, Ruihan Liang, Xiaoyun Mi, Haiying Sun, Xiuling Liu, Yanping Wang
LiAlOF (LAOF): Mn, Na, Ga red fluorescent materials were prepared by high temperature solid phase method. The properties of LAOF: Mn, Na, Ga phosphors were characterized by X-ray diffraction (XRD), photoluminescence (PL) spectra, variable temperature spectroscopy, scanning electron microscopy (SEM) and other tests. Under the excitation of 450 nm light, an intense red emission peak was observed around
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Evolution of optical properties of Au thin films with thermal annealing Opt. Mater. (IF 3.9) Pub Date : 2024-03-10 Elizabeth Hedl, Vesna Blažek Bregović, Iva Šrut Rakić, Alexander Bergmann, Jordi Sancho-Parramon
Gold (Au) thin films exhibit varied optical properties, ranging from metal-like behavior in percolated films to localized surface plasmons in island thin films. Additionally, thermal annealing introduces variability in particle sizes and shapes leading to optical response modification and enhancing the suitability of the film for possible sensing applications. This study investigates the evolution
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Semiconducting Sc2O3–ZnO nanostructures: Sustainably synthesized efficient material for electro-catalysis, energy storage, and passivation in ambient perovskite solar cells Opt. Mater. (IF 3.9) Pub Date : 2024-03-09 Shaan Bibi Jaffri, Khuram Shahzad Ahmad, Isaac Abrahams, Mohamed A. Habila
This work presents the first account of the transformed sustainable production in conjugation with the microwave processing of the scandium oxide (ScO) and zinc oxide (ZnO) forming ScO–ZnO nanostructure. Upon nanocomposite formation, the band gap energy was alleviated to 3.87 eV from 5.8 eV ScO–ZnO nanostructure was characterized with the cubic and hexagonal geometry possessing an average crystallite
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Tuning the optical properties and hydrophobicity of BiVO4/PVC/PVP composites as potential candidates for optoelectronics applications Opt. Mater. (IF 3.9) Pub Date : 2024-03-08 Ezz Yousef, M.K.M. Ali, Nageh K. Allam
Due to the rapid technological developments, optoelectronic materials have attracted much attention. However, designing low-cost materials with outstanding optical properties is still an open challenge. In this regard, we demonstrate the opportunity to synthesize a new optically active composite material made of PVC, PVP, and BiVO. The incorporation of BiVO into the PVC/PVP matrix enhanced the optical
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New insight for enhanced photocatalytic activity of Bi4-xLaxTi3O12 (0 ≤ x ≤ 1) solid solution: A case study on degradation of Rhodamine B under UV light irradiation Opt. Mater. (IF 3.9) Pub Date : 2024-03-08 Kamal Fritah, Manar Khachane, Abdessalam Bouddouch, Brahim Akhsassi, Bahcine Bakiz, Aziz Taoufyq, Abdelaziz El Aamrani, Abdeljalil Benlhachemi
In this study, we actively investigate the structural, microstructural, vibrational and photocatalytic properties of the system BiLaTiO with x ranging between 0 and 1 (BLTx). La-doped bismuth titanate BiLaTiO powders were synthesized with conventional solid-state reaction route at 850 °C. The synthesized compounds were subjected to various characterization techniques, including X-ray diffraction (XRD)
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Nitrogen doped single layer graphene for CZTS-based thin film solar cells Opt. Mater. (IF 3.9) Pub Date : 2024-03-08 Mehmet Ali Olgar, Serkan Erkan, Ali Altuntepe, Recep Zan
CdS thin films are commonly utilized as a buffer layer in chalcopyrite thin-film solar cells. However, due to the toxic nature of Cadmium (Cd), ongoing efforts are being directed towards exploring alternative options. In this contribution, doped graphene film with remarkable optical and electrical properties has been introduced for the first time as an alternative buffer layer, replacing CdS in CZTS
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Low-temperature photoluminescence characteristic of Tm-doped Ga2O3 films for light emitting diodes application Opt. Mater. (IF 3.9) Pub Date : 2024-03-08 Zewei Chen, Gaofeng Deng, Katsuhiko Saito, Tooru Tanaka, Qixin Guo
Tm-doped GaO films hold significant promise for application in light-emitting diodes (LEDs). A comprehensive understanding of their photoluminescence properties is pivotal for unlocking their full potential. In this work, we present findings on the photoluminescence (PL) spectra of Tm-doped GaO films, elucidating variations at different measurement temperatures and excitation energies utilizing synchrotron
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Intrinsic defect related optical properties of pure and rare-earth-doped LiMgPO4 Opt. Mater. (IF 3.9) Pub Date : 2024-03-07 D.A. Akulov, M.O. Kalinkin, R.M. Abashev, V.G. Zubkov, A.I. Surdo, D.G. Kellerman
We report an experimental study on intrinsic defects in pure and rare-earths doped lithium-magnesium phosphate LiMgPO. A wide range of optical methods were used in the work, including photoluminescence, thermoluminescence, radioluminescence and optical absorption. A detailed investigation made it possible to conclude that the main type of intrinsic defects responsible for all kinds of luminescence
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Nanoscale Raman mapping of elastic stresses in multilayer heterostructure based on multi-period GaN/AlN superlattices grown using HVPE technology on hybrid SiC/Si substrate Opt. Mater. (IF 3.9) Pub Date : 2024-03-07 P.V. Seredin, Sh. Sh. Sharofidinov, D.L. Goloshchapov, Y.A. Peshkov, S.A. Ivkov, N.S. Buylov, K.A. Eremeev, S.A. Kukushkin
For the first time, a multilayer heterostructure consisting of periodically arranged GaN and AlN layers was formed by chloride-hydride gas-phase epitaxy on a SiC/Si hybrid substrate synthesised by the method of coordinated atom substitution. To level the difference in lattice parameters and thermal expansion coefficients between the epitaxial layers of the heterostructure and the hybrid substrate,
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Plasmonic enhanced photoconductivity of gold nano-island film in total internal reflection condition Opt. Mater. (IF 3.9) Pub Date : 2024-03-07 Sara Sadeghi, Mohammad Mohammadimasoudi, Hossein Mehrzad, Ezzedin Mohajerani
The effect of total internal reflection (TIR) condition on the photoconductivity of gold nano-island film is investigated experimentally. The current-voltage measurements are carried out across the discontinuous film while it is excited under continuous wave (CW) low laser irradiance at wavelength of 532 nm, which appropriately matches the localized surface plasmon resonance (LSPR). The results show
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On the substrate heating effects on structural, mechanical and linear/non-linear optical properties of Ag–Mn co-doped ZnO thin films Opt. Mater. (IF 3.9) Pub Date : 2024-03-07 Fouaz Lekoui, Rachid Amrani, Salim Hassani, Elyes Garoudja, Walid Filali, Mohammed Ouchabane, Nordine Hendaoui, Slimane Oussalah
Optimization of the physical properties of ZnO thin films doped with different elements opens new opportunities for the application of these materials in different fields. Consequently, it is crucial to thoroughly explore the correlation of their structural, mechanical, and optical properties. In this paper, pure and Ag–Mn co-doped ZnO thin films were deposited by rapid thermal evaporation (RTE) method
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Self-powered action in metal-semiconductor-metal ultraviolet photodetectors based on AlGaN/GaN high electron mobility transistor structures on different substrates Opt. Mater. (IF 3.9) Pub Date : 2024-03-07 Ahmed S. Razeen, Eric X. Tang, Gao Yuan, Jesper Ong, K. Radhakrishnan, Sudhiranjan Tripathy
AlGaN/GaN based metal-semiconductor-metal (MSM) ultraviolet photodetectors (UV PDs) are highly in demand for several applications that require thermal and mechanical stability, and strength to handle different environmental conditions. However, the electro-optic performance of these devices is very low in self-powered operation mode, which limits their potential to be implemented for practical applications
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Fast response SBPDs based on low-pressure CVD-grown β-Ga2O3 Opt. Mater. (IF 3.9) Pub Date : 2024-03-07 He Chen, Nanzheng Ji, Lei Wang, Lilin Wang, Pengkun Li, Kai Peng, Difei Xue, Peiwen Lv, Chenlong Chen
In recent years, GaO solar-blind photodetectors (SBPDs) have received great attention for their potential applications in civil and military exploration. In this work, we reported the epitaxial growth of β-GaO thin films on c-plane sapphire using gallium (Ga) and oxygen (O) as source precursors. Compared with traditional solar-blind-ultraviolet photodetector based on β-GaO film, the prepared solar-blind-ultraviolet
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Capillary force assisted self-assembly of Au NPs arrays for up-conversion luminescence enhancement Opt. Mater. (IF 3.9) Pub Date : 2024-03-06 Chengyun Zhang, Haoran Wu, Yu Xing, Qingxin Yin, Jianxia Qi, Qingyan Han, Wei Gao, Jun Dong
Using the capillary force-assisted self-assembly method, the enhancement system for photoluminescence was simply and effectively constructed, consisting of a layer of Au nanoparticle arrays uniformly assembled on the inner wall of the capillary and a further layer of hexagonal rare-earth doped nanoparticle core-shell structures assembled on its surface. It was found that the solution had a significant
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Sunlight-active, S-g-C3N4 boosts Ni-doped ZnFe2O4 photocatalysts for efficient organic pollutants degradation Opt. Mater. (IF 3.9) Pub Date : 2024-03-06 Ayesha Taj Gorsi, Sana Mansoor, Mohsin Javed, Muhammad Tahir Sohail, Ali Bahadur, Shahid Iqbal, Sajid Mahmood, Matar Alshalwi, Muhammad Azam Qamar, Muhammad Abdul Qayyum
The advanced oxidation process (AOP) using heterogeneous photocatalysis has been recognized as an effective method for wastewater treatment. Cubic spinel nickel-doped zinc ferrite (Ni@ZnFeO) nanoparticles were prepared using hydrothermal synthesis with varying nickel concentrations (0, 1, 3, 5, 7, and 9 wt %). The nanoparticles and nanocomposites were characterized using XRD, XPS, BET, SEM, PL, TEM
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A multifunction tunable terahertz chiral metasurface based on graphene and photosensitive silicon Opt. Mater. (IF 3.9) Pub Date : 2024-03-06 Guan Wang, Xin Zhang, Jia Liu, Hengli Feng, Meichen Li, Shuang Yang, Yang Jia, Hongyan Meng, Yachen Gao
We proposed a chiral metasurface which can realize absorption, circular dichroism (CD) and line-to-circular polarization conversion (LTC-PC). Additionally, by varying the Fermi energy level () of graphene, the amplitude of the absorption can be changed for specific application. CD can also be dynamically tuned by adjusting the conductivity of photosensitive silicon (PS). Furthermore, by rotating the
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The effects of air-annealing on the performance of optical-electrical assessment of sputtered CdS film towards the Ag/n-CdS/p-Si(100)/Al photodetectors Opt. Mater. (IF 3.9) Pub Date : 2024-03-06 Sakshi Pathak, Shristi Chaudhary, Monika Shrivastav, Naveen Kumar, Sanjeev Varshney, Mahendra Kumar, Sachin Kumar Sharma, Fernando Guzman, Sanjeev Kumar, Chandra Kumar
The CdS thin film is the most important narrow band gap n-type layer for efficient optoelectronics applications. Here, we report CdS thin film on silicon and glass substrates through direct current(dc) magnetron sputtering technique. The effect of air-annealing on deposited thin films & its impact on morphological and optoelectrical characteristics of CdS thin films have been explored in this study
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NaSr3Be3B3O9F4 crystal growth and continuous-wave laser generation at 266 nm Opt. Mater. (IF 3.9) Pub Date : 2024-03-05 Lijuan Liu, Ru-Chen Zhao, Tong Wu, Taiming Jin, Lei Zhang, Shuangyue Shang, Tianhong Huang, Xiaoyang Wang
In this paper, we have grown a large NaSrBeBOF (NSBBF) crystal with a top-seeded solution method and generated a continuous-wave (cw) laser radiation at 266 nm with a Brewster-cut NSBBF. With a high-power cw 532 nm and a frequency doubling stage, up to 120 mW cw UV laser was generated at 266 nm. A high stability at 50 mW was obtained more than 10 h. This cw UV laser source is applicable for self-calibrating
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Effect of spontaneous superlattice ordering on the luminescence properties of the MOVPE grown AlGaAs/GaAs (100) heterostructure Opt. Mater. (IF 3.9) Pub Date : 2024-03-05 A. Pradhan, T. Maitra, S. Mukherjee, S. Mukherjee, A. Nayak, S. Bhunia
Luminescence properties of MOVPE grown AlGaAs epilayer on conventional GaAs (100) substrates have been unravelled through temperature dependent photoluminescence (PL) spectroscopy. A shrinkage of ∼33.3 meV in the excitonic energy as a result of the presence of the natural superlattice ordering has been reported. The temperature dependence of the excitonic energy has been investigated using two independent
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Enhancing photocatalytic norfloxacin degradation: Synergistic engineering of heterojunctions and oxygen vacancies in Fe-based MIL Opt. Mater. (IF 3.9) Pub Date : 2024-03-05 Yixuan Liu, Jiamin Wei, Qi Zong, Chaoyue Chen, Tinghai Yang, Weiqiao Liu
Constructing cost-efficient and robust Fe-MIL-based photocatalysts for efficiently photodegrading antibiotics is highly appealing, however, their intrinsic defects, particularly unsatisfied visible light harvesting efficiency and rapid recombination of charge carriers, provide significant challenges. Herein, oxygen-vacancy-rich BiWO-OVs/NH-MIL-88B (Fe) composites were successfully constructed a two-step
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Plasmonic fractal Metasurface with Fano response for virus detection in the optical spectrum Opt. Mater. (IF 3.9) Pub Date : 2024-03-04 Zahra Sadat Tabatabaeian, Fatemeh Kazemi, Sepideh Ebrahimi
Optical Metasurfaces, two-dimensional nano-patterned surfaces designed to manipulate light, show promise for the sensitive detection of viruses. This paper reports on the development of a fractal plasmonic Metasurface tuned to operate in the near-infrared optical spectrum (2000–5000 nm) with Fano resonances. Fano resonances allow for sharper spectral features and higher sensitivity compared to typical
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Effect of carbon nanotubes and TiN nanoparticles on light absorption property of nanostructured carbon-based coatings fabricated by high-voltage electrostatic spraying technique Opt. Mater. (IF 3.9) Pub Date : 2024-03-04 Yingpu Huang, Lihui Zhu, Qingwei Huang, ZhiCong He
In order to acquire high light absorptance in the visible light region to near infrared region economically and environment-friendly, disordered and nanostructured carbon-based coatings were fabricated by using high-voltage electrostatic spraying technique. Carbon microparticles (CMP) and carbon nanotubes (CNT) with tube diameter of 10 nm, 15 nm and 20 nm were chosen as frameworks, carbon nanoparticles
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Multicolor fluorescent of 1D PoPD for LEDs Opt. Mater. (IF 3.9) Pub Date : 2024-03-04 Kunpeng Jiang, Yiran Bai, Guisheng Zhu, Huarui Xu, Tingting Wei, Yunyun Zhao, Fei Shang, Chunyu Xu, Li Jiang, Lili Han
Multicolor fluorescent materials are gaining traction in photoelectric applications due to their ability to achieve various color patterns. Aromatic amines are highly promising candidates for their rigid benzene ring and amine groups. However, achieving regulation of fluorescence emission wavelength remains elusive. In this work, we proposed a novel OH/-OH synergistic scheme which successfully achieved
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Enhanced photoluminescence of DCJTB by silver nanohole arrays with ring-shaped silver nanoparticles over hyperbolic metamaterials Opt. Mater. (IF 3.9) Pub Date : 2024-03-04 Sy-Hann Chen, Jun-Kai Fang, Cheng-Han Du, Min-Hsiung Shih, Hsing-Chih Liang, Hai-Pang Chiang
In this study, a novel approach for fabricating silver nanohole arrays (AgNAs) on silicon/hyperbolic metamaterial (Si/HMM) substrates is described. This approach involves the use of fixed-size plastic nanoparticles combined with reactive-ion etching, followed by decoration with silver nanoparticles (AgNPs) around the edges of the Ag nanoholes. The HMM structure is composed of six pairs of alternating
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Efficient and stable perovskite solar cell through the interfacial engineering: Experiment and computational investigations Opt. Mater. (IF 3.9) Pub Date : 2024-03-04 Khushboo Gupta, O.P. Thakur, Manish Kumar
Pure phase LaMnO (LMO) and NiCoO (NCO) are synthesized via the conventional sol-gel route to use as absorber and hole transport materials respectively in the perovskite solar cell (PSC) device. The pure phase cubic crystal structure of LMO with space group Pm-3m and face centred cubic spinel crystal structure of NCO with space group Fd-3m are verified through the powder XRD data with the particle size
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Facile synthesis of anti-reflective silica film with both ultrahigh transmittance and self-cleaning function Opt. Mater. (IF 3.9) Pub Date : 2024-03-04 Shuangquan Liu, Chen Weifeng, Yulong Qiao, Tao Li, Xu Li, Ting Xiao, Lihua Jiang, Xinyu Tan
Preparation of anti-reflective (AR) films with both high transmittance and self-cleaning function is crucial for the photovoltaic or other optical devices. Herein, the modified SO AR film is fabricated through facile synthesis. For the synthesis of silica sol, the aging process is eliminated completely, thus greatly shortening the preparation time from days or weeks to hours. The obtained film possesses
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Investigations on structural and optical properties of Eu3+-activated Sr2GdNbO6 double-perovskite phosphors for solid-state lighting Opt. Mater. (IF 3.9) Pub Date : 2024-03-04 T.S. Sreena, G. Dhanu Krishna, Veena Lalan, K.P.P. Najiya, K.G. Gopchandran
Red-emitting phosphors with high quantum efficiency are required to develop high-performance white light-emitting diodes (WLEDs). Herein, we demonstrated a series of thermally stable, high-efficiency Eu activated double perovskite SrGdNbO red phosphors synthesized via a high-temperature solid-state reaction method. A systematic investigation has been done into the structural, morphological and optical
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Synthesis, growth, and characterization of deuterated l-alanine triglycine sulfate (DLaTGS) single crystal for infra-red detector applications Opt. Mater. (IF 3.9) Pub Date : 2024-03-04 Almuatasim Alomari, Alexander Kropachev, Shankar Baliga, Raj Chakraborty, Ashok K. Batra, Christopher R. Bowen
This paper describes the low temperature growth of triglycine sulphate (TGS) and deuterated -alanine triglycine sulfate (DLaTGS) crystals using a slow cooling method. The dielectric, ferroelectric and pyroelectric properties of the grown crystals were investigated using LCR meter, Sawyer–Tower-modified circuit, and temperature ramping method, respectively. Powder X-ray diffractometer (XRD) was used
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Enhancing photocatalytic efficiency: Geopolymer-supported TiO2 composites for sustainable organic pollutant degradation Opt. Mater. (IF 3.9) Pub Date : 2024-03-04 Changshuai Chen, Sulakshana Shenoy, Chitiphon Chuaicham, Jirawat Trakulmututa, Quanzhi Tian, Haijun Zhang, Keiko Sasaki
The present study reports the synthesis of three different kinds of geopolymers (G1, G2, and G3) from coal gasification slag using alkali fusion and component additive method which is an environmentally friendly process that repurposes industrial waste. The geopolymers obtained served as supports facilitating the growth of TiO particles via a sonication-hydrothermal-calcination method. The primary
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Increasing the open-circuit voltage and dielectric constant by introducing the number of fluorine atoms in organic solar cells Opt. Mater. (IF 3.9) Pub Date : 2024-03-04 Pengzhi Guo, Junhong Liang, Jinye He, Sheng Guan, Qian Wang, Furong Shi, Yuan Zhou, Chenglong Wang, Yangjun Xia
For the purpose of examining the influence of the number of fluorine atoms on the open-circuit voltage () in photoelectric devices, the polymers PBDT-0F-G, PBDT-2F-G, PBDT-4F-G were synthesized. These side chains of the polymer were substituted by fluorine atoms in different quantities and the photovoltaic properties were characterized. The introduction of F atoms on the side chain has a deeper molecular
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High performance flexible H-shaped single layered organic light emitting diode Opt. Mater. (IF 3.9) Pub Date : 2024-03-04 Anshika Srivastava, Ankita Srivastava, Nilesh Anand Srivastava, Brijesh Kumar
Organic light emitting diodes (OLEDs) have gained a remarkable position in display industries, because of its high flexibility and wide color gamut features. A number of OLED structures have been demonstrated in the recent years with an aim to make proficient device. In this paper, an H-shaped single layer OLED design has been proposed. An intensive investigation over various design challenges such
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Characterization and analysis of physical, optical, and radiation attenuation properties of vanadium-infused in cadmium lead borate tellurite glasses Opt. Mater. (IF 3.9) Pub Date : 2024-03-04 S. Vedavyas, Islam M. Nabil, K. Chandra Sekhar, N. Almousa, Shams A.M. Issa, Md Shareefuddin, Hesham M.H. Zakaly
This study presents an in-depth analysis of the physical, optical, electron paramagnetic resonance (EPR), and radiation shielding properties of vanadium-doped cadmium lead borate tellurite glasses, coded as PCTBVX. A series of glasses with varying concentrations of vanadium oxide (VO) were synthesized and characterized to understand their structural and functional capabilities. The physical properties
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Boosting the thermal stability of A2InTaO6:Cr3+ (A = Ca, Sr, Ba) NIR emitters via component regulation Opt. Mater. (IF 3.9) Pub Date : 2024-03-01 Hua Fan, Jinling Huang, Ye Yang, Linawa Shen, Ling Liu, Shichang Song, Qinyu Zhou, Weifeng Gao, Chunyan Zhou, Liya Zhou
Broadband near-infrared (NIR) light-emitting diodes (LED) with excellent efficiency, and thermal stability are vital light sources for NIR spectroscopic techniques. Nevertheless, there are currently some drawbacks to oxide NIR phosphors, including poor thermal stability. This work has successfully synthesized a series of double perovskite AInTaO (A = Ca, Sr, Ba) phosphors by a conventional high-temperature
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Optical properties of pressure-assisted thermal diffusion-doped Fe2+: CdSe single crystals Opt. Mater. (IF 3.9) Pub Date : 2024-03-01 Qianqian Hu, Youbao Ni, Changbao Huang, Haixin Wu, Zhenyou Wang, Xuezhou Yu, Lingli Wei, Zhicheng Zhu, Ya Li
TM: II-VI mid infrared laser materials have been studied widely in past decades. Recently, Fe: CdSe crystal is considered one of the promising laser crystals. This paper aims to provide a novel thermal diffusion method with pressure-assisted to prepare Fe: CdSe single crystals, and discuss the important relationship between the crystal's transmittance and dopant concentration and crystal length. The
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Thermoluminescence properties study of double dopants borosilicate glasses: Transition metal (Cr2O3, ZnO) and alkaline metal (Na2O) Opt. Mater. (IF 3.9) Pub Date : 2024-03-01 Shrouk Farouk, Fathy Abdel-Wahab, Heba Abdelmaksoud, Manal Abdel-Baki, Nabil El-Faramawy
The current study investigates the thermoluminescence characteristics of borosilicate glasses doped with ZnO and NaO metal-based oxides. The deconvolution of the glow curves displayed that they were composed of eight traps with energies located between 0.965 and 1.61 eV. The kinetic parameters of the charge carriers’ traps: E (eV), T (K), s (s), and b were obtained. The values of the activation energies
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Synthesis of the multifunctional Cubic-Gd2O3:Er3+,Yb3+ nanothermometers from the nanoscaled Metal–Organic framework of Gd-BTC:Er3+,Yb3+ Opt. Mater. (IF 3.9) Pub Date : 2024-03-01 Lam Thi Kieu Giang, Wojciech M. Piotrowski, Agnieszka Opalińska, Ngo Thi Hong Le, Nguyen Hai Yen, Pham Hoai Linh, Lukasz Marciniak
In this paper, we present a green synthesis method that allows the obtained cubic-GdO:Er,Yb nanothermometers without using precursors derived from inorganic acids unlike other traditional methods. The performed TEM/HRTEM images, SAED patterns, and XRD analyses confirm the formation of cubic phase GdO: Er,Yb with average particle size about of 15 ± 1 nm after annealing the nanoscale metal-organic frameworks
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Co-sensitization cocktail with methylfuran dyes catapults photovoltaic performance: Nearly 50% boost over standard N719 Opt. Mater. (IF 3.9) Pub Date : 2024-03-01 Ali El-Rayyes, A.M. Elbasiony, Ehab Abdel-Latif, Safa A. Badawy
This groundbreaking study reveals an unparalleled strategy for significantly enhancing the efficiency of dye-sensitized solar cells by co-sensitizing a pioneering combination of organometallic dyes. By employing two ingeniously engineered co-sensitizers, and , in tandem with the standard dye, our revolutionary device demonstrated remarkable performance improvements. The power conversion efficiency
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A 2-D based photonic crystal biosensor for efficient diagnosis of anemia and kidney failure Opt. Mater. (IF 3.9) Pub Date : 2024-03-01 E, s, m, a, t, , R, a, f, i, e, e
A two-dimensional biosensor based on photonic crystal rods is proposed and considered. The structure is consisted of 49 × 39 arrays of Si rods in the air background. Finite-difference-time-domain (FDTD) and plane wave expansion (PWE) methods are utilized for extracting photonic band gap (PBG) and field distribution spectra. Output 1 port can be considered as a sensing medium for detection of hemoglobin
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White light emission and spectroscopic studies of dysprosium doped bismuth antimony fluoroborate glasses for optoelectronic devices Opt. Mater. (IF 3.9) Pub Date : 2024-03-01 Gunjan Mahajan, M.V.V.K Srinivas Prasad, K. Swapna, K. Seshulatha, G.G. Dhar, A.S. Rao
Dysprosium doped Bismuth Antimony fluoroborate (BiSFB) glasses were synthesized using conventional melt-quenching method. The as prepared glasses were investigated for optical absorption photoluminescence (PL) excitation, PL emission and PL decay The amorphous nature of the titled glasses were confirmed by XRD measurement. Judd-Ofelt (J-O) parameters through optical absorption are utilized to evaluate
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Composition influence of La2O3 on the structural and radiation shielding features of CoO–Na2O–ZnO–B2O3 glass matrix Opt. Mater. (IF 3.9) Pub Date : 2024-03-01 Afaf M. Babeer, Hesham Y. Amin, M.I. Sayyed, Abd El-razek Mahmoud, M.S. Sadeq
To examine the structural and radiation shielding features of a borate glass matrix comprising sodium oxide (NaO), lanthanum oxide (LaO), cobalt oxide (CoO), and zinc oxide (ZnO), we employed the FTIR technique in the range 400–1600 cm and Phy-X within the photon energy between 0.015 and 15 MeV. The measured density changed from 2.179 to 2.931 with additional LaO dopants, from 0 to 8 mol%. Based on
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Detection of nickel ions in aqueous solution by laser induced fluorescence based on YZS70 resin Opt. Mater. (IF 3.9) Pub Date : 2024-03-01 Junjie Pan, Jinan Xia, Lidong Wu, Fushen Cao, Lanxin Shi, Dongqing Qiao
A novel method for detecting nickel ions by adsorbing them onto chelating resin and using laser-induced fluorescence was proposed. The chelating resin, YZS70 with high affinity was selected to achieve strong adsorption of nickel ions. The adsorbed nickel ions were excited by a laser to observe their fluorescence signals and to perform analysis. The experimental results showed a rapid, sensitive, and
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Design and manufacturing of mid-infrared ultra-wide-angle antireflective composite micro-nano structure film Opt. Mater. (IF 3.9) Pub Date : 2024-03-01 Jie Yang, Jia Yang, Yuegang Fu, Jinshuang Wu, Mingzhao Ouyang, Litong Dong, Shanshan Kou
Traditional homogeneous optical thin films encounter difficulties in minimizing reflected energy at steep angles due to polarization separation. We drew inspiration from the natural ‘moth-eye’ structure and devised an innovative antireflective micro-nano interface, which provides a solution for the limitations faced by traditional optical films. This study designed an ultra-wide-angle antireflective
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The study on two different design and fabrication of visible light photodetection based on In2Se3-WS2 heterojunction Opt. Mater. (IF 3.9) Pub Date : 2024-02-29 Qidi Sheng, Qigang Gu, Shubing Li, Qiangfei Wang, Xuan Zhou, Bin lv, Guofeng Cheng, Bo Yan, Juan Deng, Fan Gao
Since the discovery of graphene, extensive research has been conducted on two-dimensional (2D) materials with similar structures due to their exceptional photoelectric properties. Transition metal disulfide compounds (TMDCs) have emerged as promising candidates for photodetector applications owing to their remarkable physical characteristics. This study investigates the photoelectric properties of
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Dynamically light-switched polarization-sensitive absorber based on semiconductor-incorporated metamaterial structure Opt. Mater. (IF 3.9) Pub Date : 2024-02-29 Xinye Tian, Xuejun Qiu, Han Li, Junjiao Lu, Chunyong Yang
A light-switched polarization-sensitive metamaterial absorber is proposed based on photo-controlled conductivities of Ge and GaAs. The absorber has a typical sandwich structure, comprising semiconductor Ge, GaAs, and phase-change material VO on top; a SiO dielectric layer in the middle; and a metal substrate at the bottom. When Ge and GaAs are both metallic, the proposed absorber behaves as an ultra-broadband
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Improving device performance of sputtered CZTSe based solar cells by Manganese doping Opt. Mater. (IF 3.9) Pub Date : 2024-02-29 Yavuz Atasoy, Bülent M. Başol, Emin Bacaksız
Despite many efforts, (CZTSe) based solar cells have remained relatively low efficiency compared to other thin film-based devices. One of the prevalent strategies used to improve cell performance in CZTSe is cation substitution. Samples with various Mn content were grown by a two-stage method . + crystalized in kesterite phase irrespective of the Mn content as confirmed by measurements. The highest
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Raman characteristics of graphene/quartz and graphene/Ag nanoparticles/quartz substrate: Laser power dependence Opt. Mater. (IF 3.9) Pub Date : 2024-02-29 Naglaa Abdel All, Ghada Khouqeer, Mohamed Almokhtar
The sensitivity of graphene surface to adjacent conditions plays an important role that modifies the performance and characteristics of graphene devices working under ambient conditions. Quartz is a dielectric transparent material with excellent optical transmission and therefore graphene/quartz is widely used in graphene device technology. Here, graphene/quartz and graphene/plasmonic nanoparticle/quartz
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Dual-mode single-band ratiometric luminescence thermometry based on tunable thermal-responsive luminescence of Eu3+ Opt. Mater. (IF 3.9) Pub Date : 2024-02-29 Junhe Zhou, Ziyan Zhang, Zeyu Wang, Hongshun Sun, Yuan Cai, Jintao Pan, Ning Wang, Zicong Yang, Yongjia Hu, Yujia Ji, Yang Wei, Lingling Ma, Yanqing Lu
High-performing lanthanide (Ln)-based luminescence thermometry is gaining widespread attention for its remote temperature reading, broad temperature range, high sensitivity, resolution, and stability in various applications. However, facile strategies for constructing multi-mode luminescence thermometry based on a simple material system are still challenging. Herein, we propose a dual-mode single-band
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Preparation of ZnS/AgNW network for stabilization of flexible transparent conductive films by hot vapor deposition method Opt. Mater. (IF 3.9) Pub Date : 2024-02-29 Xiuhuai Jia, Le Zhao, Pan Yang, Wenxing An, Zilan Wang, Shihui Yu
Ag NWs have received much attention from researchers due to their excellent optoelectronic properties and mechanical flexibility. However, the nano-size effect of Ag NW leads to their poor stability in harsh environments and easy oxidation, which makes it challenging to meet the application requirements of flexible electronic devices. Covering the surface of Ag NW with a protective layer coating is
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Structural and photoluminescence dynamics of Sr2Ca1-xWO6:xEr3+ phosphors Opt. Mater. (IF 3.9) Pub Date : 2024-02-29 E. Sreeja, A.K. Vibeesh, P.R. Biju
The suitability of the Er ions doped strontium calcium tungstate phosphors for solid state lighting applications is investigated in this work. The samples are synthesized by conventional solid-state reaction method, and are characterized X-ray diffraction, energy dispersive X-ray spectroscopy, scanning electron microscopy, and Fourier transform infrared spectroscopy. Strontium calcium tungstate host
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Fluorescent probe effect of super-sensitive transition Dy3+ ions in the negative thermal expansion materials Sc2W3O12 Opt. Mater. (IF 3.9) Pub Date : 2024-02-28 Lili Han, Qiangtong Li, Lijuan Wang, Wenqain Zhou, Yifan Miao, Siyuan Tian, Yuncan Fan, Ziqi He, Zhipeng Ci
Negative thermal expansion (NTE) materials have attracted significant attention for their distinctive thermal expansion properties and potential applications in various fields such as micro-electronic packaging, aerospace engineering, optics, and sensors. Despite significant advancements, the field continues to face numerous challenges, including scarcities in material types, unclear mechanisms underlying
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Tuning of optical and vapour sensing properties of manganese-doped cadmium oxide thin films for sensor applications Opt. Mater. (IF 3.9) Pub Date : 2024-02-28 P. Umarani, K. Sivakumar, S. Sathiya, S. Cathrin Lims, Sivakumar Aswathappa, Raju Suresh Kumar, Abdulrahman I. Almansour, S. Sahaya Jude Dhas
Mn-dopant concentrations ranging from 0.05 mM to 10 mM were utilized for producing Mn-doped CdO thin films on glass substrates employing spray pyrolysis technique. The structural, morphological, topological, optical, and vapour sensing properties of CdO thin films are acknowledged to be impacted by Mn doping. According to the XRD analysis, the generated thin film displays polycrystalline nature with
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The linear and nonlinear optical variations in Na2O-rich borosilicate glass doped with constant CrO3 content Opt. Mater. (IF 3.9) Pub Date : 2024-02-28 M.S. Sadeq, A.A. El-Daly, S. Mosaad, Ahmed H. Ibrahim
Chromium trioxide-doped borosilicate glass with composition xNaO-(90-x) BO+ 1CrO+ 9SiO; x = 20, 30, 40, 50, and 60 mol% was produced following the melt quenching method. The presence of Cr and Cr states caused the appearance of absorption bands at 315–327 nm and 427–451 nm, respectively, which overlapped with the absorption edge and masked the optical bandgaps. Detailed deconvolution processes were
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Influence of shallow traps on the kinetics of Optically Stimulated Luminescence of the Li and Ce ions co-doped MgB4O7 compound Opt. Mater. (IF 3.9) Pub Date : 2024-02-28 Adelmo S. Souza, Jorge L.O. Santos, Vinicius Coelho, Antonio O. de Souza, João V.B. Valença, Iury S. Silveira, Linda V.E. Caldas, Heveson Lima
The presence of point defects associated with shallow traps has been identified as a limiting factor in the design of materials with desirable characteristics for applications such as scintillation and luminescence dosimetry, among others. In this context, this study aims to elucidate the dynamics inherent to the charge carriers in systems containing multiple traps and one single recombination centre
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Colloidal etching of deep ultraviolet LED with improved light extraction efficiency Opt. Mater. (IF 3.9) Pub Date : 2024-02-28 Zemin Zhang, Yiwei Cao, Ju Liu, Quanjiang Lv, Junlin Liu, Mohamed A. Habila, Shahid Hussain, Ling Bai
In order to increase the light extraction efficiency (LEE) of AlGaN deep ultraviolet light-emitting diodes (DUV LEDs), this study employed a sapphire substrate with a microlens array. Light extraction efficiency is increased by increasing transverse electric (TE) polarized light output by the use of a microlens array (MLA) created by inductively coupled plasma (ICP) etching. The construction of 2D
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Preparing and investigating the monolithically stacked flexible tandem all-thin-film electrochromic device Opt. Mater. (IF 3.9) Pub Date : 2024-02-28 Fan Zhang, Jinhong Ye, Hanyu Lu, Mingtao Chen, Hongbing Zhu, Kai Shen, Meixiu Wan, Yaohua Mai
A flexible tandem all-thin-film electrochromic device (ATF-ECD) with a device structure of polyethylene terephthalate (PET)/tin doped indium oxide (InO:Sn, ITO)/tungsten oxide (WO)/lithium tantalate (LiTaO)/nickel oxide (NiO)/ITO/NiO/LiTaO/WO/ITO has been fabricated by all magnetron sputtering technologies, in which the bottom ATF-ECD with a superstrate-type structure and the top ATF-ECD with a substrate-type
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Ab initio calculations of two-site occupation for substituting ions in MgTa2O6:Cr3+ phosphor: The geometric and electronic structures and optical transition energies Opt. Mater. (IF 3.9) Pub Date : 2024-02-27 Zafari Umar, Oleg Khyzhun, Tomoyuki Yamamoto, Piotr Brągiel
First-principles DFT calculations have been performed to explore the geometric optimized structure, electronic properties and optical transition energy of MgTaO:Cr phosphor. In the calculations we use different approaches for the exchange-correlation potential and treat three supercell models for MgTaO:Cr, which consider replacement of Cr ions on the octahedral positions of Mg ions, Ta ions, and the