Defect-Mediated Self-Powered Ultraviolet Photodetection of Chemically Tailored Tin-Oxide Nanoparticles

IF 1.5 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY Brazilian Journal of Physics Pub Date : 2023-08-30 DOI:10.1007/s13538-023-01356-z

R Narzary, Tani Chekke, S Ngadong, Biswarup Satpati, S Bayan, Upamanyu Das

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Abstract

We have reported about the synthesis of tin oxide (SnO₂) nanoparticles using simple and low-cost hydrothermal method followed by fabrication of self-powered ultraviolet (UV) photodetectors (PDs). The structural and morphological characteristics of the nanoparticles have been analyzed with X-ray diffraction and electron microscopy techniques. In addition, the existence of native defects in SnO₂ has been realized from spectroscopic techniques. Further, it has been found that the nanoparticles can exhibit significant open-circuit voltage, and the observation of enhanced open-circuit voltage under illumination of UV light makes the system promising for self-powered (SP) photodetectors. The origin of the self-powered UV photodetection has been assigned to capturing of photogenerated carriers by the native defects of SnO₂ nanoparticles. The observation of self-power UV detection in such system can lead to the fabrication of futuristic UV detectors without bothering the existing issue of energy crisis.

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缺陷介导的自供电紫外光检测化学定制氧化锡纳米颗粒

本文报道了用简单、低成本的水热法制备氧化锡纳米颗粒，并制备了自供电紫外探测器。利用x射线衍射和电子显微镜技术分析了纳米颗粒的结构和形态特征。此外，利用光谱技术发现了SnO2中存在天然缺陷。此外，研究还发现，纳米颗粒可以表现出显著的开路电压，并且在紫外光照射下观察到开路电压的增强，使该系统有望成为自供电(SP)光电探测器。自供电紫外光探测的起源被认为是利用SnO2纳米颗粒的天然缺陷捕获光生成的载流子。在这种系统中观察到的自功率紫外探测可以导致未来紫外探测器的制造，而不会困扰现有的能源危机问题。

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来源期刊

Brazilian Journal of Physics 物理-物理：综合

CiteScore

2.50

自引率

6.20%

发文量

189

审稿时长

6.0 months

期刊介绍： The Brazilian Journal of Physics is a peer-reviewed international journal published by the Brazilian Physical Society (SBF). The journal publishes new and original research results from all areas of physics, obtained in Brazil and from anywhere else in the world. Contents include theoretical, practical and experimental papers as well as high-quality review papers. Submissions should follow the generally accepted structure for journal articles with basic elements: title, abstract, introduction, results, conclusions, and references.