Boosting the optoelectronic properties of V2O5 thin films by Fe3+ doping for photodetector applications

IF 3.8 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials Pub Date : 2024-11-19 DOI:10.1016/j.optmat.2024.116429

S.L. Jenish , S. Valanarasu , I. Loyola Poul Raj , A. Vimala Juliet , R.S. Rimal Isaac , V. Ganesh

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引用次数: 0

Abstract

Prevailing the demands of UV optoelectronics gadgets with improved efficiency and low-cost fabrication in this commercial and competitive world, we at this moment report an improved photo response capabilities of V₂O₅ thin films by incorporating Fe content of (0, 1, 2, 3, 4 and 5 wt%) over the glass substrates using nebulizer assisted spray pyrolysis technique. The X-ray diffraction (XRD) analysis authenticates the existence of an orthorhombic crystal structure with an intense peak along (010) plane. The FESEM reveals the morphology of tubular nano rod-like structures with a porous nature for all the V₂O₅ samples. The presence of compositional elements in the samples was evident by EDX analysis. UV spectral studies show that the bandgap varies from 2.41 eV to 2.1 eV. The PL spectra exemplify the existence of violet emission at 475 nm. The performance of the UV photodetector was analyzed in terms of parameters like Responsivity, Detectivity and External Quantum Efficiency and is observed to be maximum for 3 % Fe doped V₂O₅ (R = 46.4 × 10⁻²AW⁻¹, D∗ = 4.26 × 10¹⁰Jones and EQE = 150 %).

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通过掺杂 Fe3+ 提高 V2O5 薄膜的光电特性以应用于光电探测器

在这个竞争激烈的商业世界里，人们对紫外光电子器件的要求是效率更高、制造成本更低，因此，我们采用雾化器辅助喷雾热解技术，在玻璃基底上添加铁含量（0、1、2、3、4 和 5 wt%），从而提高了 V2O5 薄膜的光响应能力。X 射线衍射（XRD）分析表明，该薄膜具有正方晶体结构，沿（010）面有一个强烈的峰值。FESEM 显示所有 V2O5 样品都具有多孔性的管状纳米棒状结构。通过 EDX 分析，样品中的成分元素显而易见。紫外光谱研究表明，带隙在 2.41 eV 至 2.1 eV 之间。聚光光谱显示，在 475 纳米波长处存在紫光发射。根据响应度、检测度和外部量子效率等参数对紫外光检测器的性能进行了分析，结果表明掺杂 3% 铁的 V2O5 的性能最高（R = 46.4 × 10-2AW-1，D∗ = 4.26 × 1010Jones 和 EQE = 150%）。

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

Optical Materials 工程技术-材料科学：综合

CiteScore

6.60

自引率

12.80%

发文量

1265

审稿时长

38 days

期刊介绍： Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials. OPTICAL MATERIALS focuses on: • Optical Properties of Material Systems; • The Materials Aspects of Optical Phenomena; • The Materials Aspects of Devices and Applications. Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.