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Spectroscopy Characterization of MWCNT Doped B2O3-Gd2O3-ZnO-Er2O3 Glass for NIR Solid State Application
Integrated Ferroelectrics ( IF 0.7 ) Pub Date : 2021-03-16 , DOI: 10.1080/10584587.2020.1857188
E. S. Rahayu 1 , R. Rajaramakrishna 2 , M. Djamal 1, 3 , J. Kaewkhao 2, 4
Affiliation  

Abstract

In this work, multi wall carbon nanotube (MWCNT) doped borate glass has been successfully developed by melt quenching technique with the chemical composition 67.5B2O3-20ZnO-12Gd2O3-Er2O3-0.5MWCNT. Several peaks observed from absorption spectra due to transition from 4I15/2 as a ground state into several states i.e. 4G11/2, 2G9/2, 4F7/2, 4F5/2, 2H11/2,4S3/2, 4F9/2, 4I11/2, and 4I13/2. The sample shows a strong emission in 1536 nm because of 4I13/24I15/2 transition under 520 nm wavelength excitation. Emission around 402 nm and 471 nm under 270 nm excitation could be the indication for presence of MWCNT. The sample exhibits NIR to NIR up-conversion under 1500 nm excitation. Absorption data have been used to calculate optical band gap energy through Tauc plot method. This study shows that MWCNT doped borate glass could be a promising material for solid state application in NIR region.



中文翻译:

近红外固态应用MWCNT掺杂的B2O3-Gd2O3-ZnO-Er2O3玻璃的光谱表征

摘要

在这项工作中,通过熔融淬火技术成功地开发了多壁碳纳米管(MWCNT)掺杂硼酸盐玻璃,其化学成分为67.5B 2 O 3 -20ZnO-12Gd 2 O 3 -Er 2 O 3 -0.5MWCNT。几个峰从吸收光谱观察到由于过渡从415/2作为接地状态变为几种状态,即4 ģ 11/22 ģ 9/24 ˚F 7/24 ˚F 5/22 ħ 11 / 24小号3/24 ˚F 9/2411/2,和413/2。该示例显示了在1536纳米的强发射,因为413/2415/2过渡下520nm的波长激发。在270 nm激发下402 nm和471 nm附近的发射可能表明存在MWCNT。样品在1500 nm激发下表现出NIR到NIR的上转换。吸收数据已被用于通过Tauc曲线法计算光学带隙能量。这项研究表明,MWCNT掺杂的硼酸盐玻璃可能是近红外固态应用的有前途的材料。

更新日期:2021-03-17
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