Abstract

Owing to the growing development of electronics manufacturing in tandem with the need for integration of electronic devices in the smallest size available, the need for multifunctional detectors becomes an insisted demand. Hence, the present research reports the enhancement of the optical and photoelectrical properties of polyvinyl alcohol, PVA, in ultraviolet and visible light regions by incorporating brilliant green dye, BG, nanoparticles of particle size 67.5 nm in PVA matrix. The molecular and crystal structure studies of PVA-BG spin-coated films are performed for verification of the influence of the embedded BG-dye molecules in the PVA matrix. The surface morphology and roughness of PVA-BG films are inspected and revealed a smooth nature of the film with average roughness ~ 4.157 nm. Significant enhancement of PVA optical properties is detected after adding BG nanoparticles using UV–Vis–NIR spectrophotometry, where a strong absorption in the visible region has resulted. Four exciting transitions are estimated with energies ~ 1.69, 2.31, 2.96, 3.29 and 4.64 eV. These enhanced properties are exploited in fabricating MIS structure based on Ag/PVA-BG/p-Si/Al as a dual-functional detector for sensing temperature and light intensity. The sensitivity of fabricated architecture as a temperature sensor is examined in the temperature range (293–373 K) and achieved an optimized sensitivity ~ 6.67 mV/K with a coefficient of determination ~ 99.30801 at driving current ~ 100 μA. The performance of the fabricated device as a light sensor is examined under the influence of halogen lamb light in light intensity range (20–80) mW/cm². The performance evaluation of the fabricated device as a photodetector is examined in terms of spectral responsivity, specific detectivity, linear dynamic range, signal-to-noise ratio, and ON/OFF switching behavior. The resulted values of these figures of merit parameters confirm the validity of Ag/PVA-BG/p-Si/Al to be utilized as a dual-functional sensor for light and temperature in many microelectronic circuits with stable, reliable and linear performance.

中文翻译：

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基于Brilliant Green纳米颗粒-PVA / p-Si接口的异质结构器件，用于模数转换双功能传感器应用

摘要

由于电子制造的不断发展以及对集成现有最小尺寸电子设备的需求，对多功能探测器的需求已成为一个持续的需求。因此，本研究报告通过在PVA基质中掺入67.5 nm的亮绿色染料BG纳米颗粒，增强了聚乙烯醇PVA在紫外和可见光区域的光学和光电性能。进行了PVA-BG旋涂膜的分子和晶体结构研究，以验证PVA基质中嵌入的BG染料分子的影响。检查了PVA-BG薄膜的表面形态和粗糙度，发现该薄膜具有平滑性质，平均粗糙度约为4.157 nm。在使用UV-Vis-NIR分光光度法添加BG纳米颗粒后，可以检测到PVA光学性能的显着增强，从而在可见光区域产生了强吸收。估计有四个激动的跃迁，能量约为1.69、2.31、2.36、3.29和4.64 eV。这些增强的特性被用于制造基于Ag / PVA-BG / p-Si / Al的MIS结构，作为用于检测温度和光强度的双功能检测器。在温度范围（293–373 K）中检查了作为温度传感器的结构的灵敏度，并在驱动电流〜100μA时达到了优化的灵敏度〜6.67 mV / K，确定系数为〜99.30801。在光强度范围为（20–80）mW / cm的卤素羔羊光的影响下，检验了制成的设备作为光传感器的性能²。根据光谱响应度，比检测率，线性动态范围，信噪比和开/关切换行为，检查了作为光电探测器的制造设备的性能评估。这些品质因数参数的结果值证实了Ag / PVA-BG / p-Si / Al可用作许多微电子电路中用于光和温度的双功能传感器的有效性，具有稳定，可靠和线性的性能。