Structural and optical analysis of amorphous CuGaSe2 nanostructured thin films for enhanced photosensing applications

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications Pub Date : 2025-04-09 DOI:10.1016/j.inoche.2025.114493

A.H. Ammar , A.M. Farid , A.A. Atta , A.A.M. Farag

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Abstract

This study explores the optical absorption properties of amorphous CuGaSe₂ nanostructured thin films, fabricated using thermal evaporation under a 10⁻⁵ Torr vacuum to ensure high purity and uniformity. Aiming to enhance optoelectronic applications such as photo-sensing, these films underwent thorough characterization using spectrophotometric methods, including transmission and reflection measurements. The analysis of the absorption edge identified a direct band gap of 1.96 eV, highlighting the material’s potential for optoelectronic applications. Furthermore, dispersion and oscillator energies were found to be 12.56 eV and 2.32 eV, respectively, providing a comprehensive understanding of the optical properties and light interaction behavior. Key performance indicators, including photoconductivity sensitivity, short-circuit current (1.62 × 10⁻³ A), open-circuit voltage (0.67 V), fill factor (0.64), and efficiency (7.2 %), demonstrate the suitability of these films for future use in optoelectronic devices. These findings offer valuable insights for optimizing photoresponsive materials in advanced optoelectronic technologies.

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非晶CuGaSe2纳米结构薄膜的结构和光学分析，用于增强光敏应用

本研究探索了非晶CuGaSe2纳米结构薄膜的光学吸收特性，该薄膜在10−5托真空条件下采用热蒸发法制备，以确保高纯度和均匀性。为了增强光电应用，如光传感，这些薄膜使用分光光度法进行了全面的表征，包括透射和反射测量。对吸收边的分析确定了1.96 eV的直接带隙，突出了该材料在光电应用方面的潜力。此外，发现色散和振子能量分别为12.56 eV和2.32 eV，为光学性质和光相互作用行为提供了全面的理解。关键性能指标，包括光导灵敏度、短路电流（1.62 × 10−3 A）、开路电压（0.67 V）、填充因子（0.64）和效率（7.2%），证明了这些薄膜未来在光电器件中的适用性。这些发现为优化先进光电子技术中的光响应材料提供了有价值的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Inorganic Chemistry Communications 化学-无机化学与核化学

CiteScore

5.50

自引率

7.90%

发文量

1013

审稿时长

53 days

期刊介绍： Launched in January 1998, Inorganic Chemistry Communications is an international journal dedicated to the rapid publication of short communications in the major areas of inorganic, organometallic and supramolecular chemistry. Topics include synthetic and reaction chemistry, kinetics and mechanisms of reactions, bioinorganic chemistry, photochemistry and the use of metal and organometallic compounds in stoichiometric and catalytic synthesis or organic compounds.