High‐Performance of Self‐Powered UV‐Visible CdS (PVP)/PbI2 Heterojunction Photodetector

IF 2.5 4区物理与天体物理 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Physica Status Solidi-Rapid Research Letters Pub Date : 2024-03-23 DOI:10.1002/pssr.202400009

Lei Yang, Mingkun Huang, Yue Wang, Yuanhao Kang, Le Wang, Niumiao Zhang

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Abstract

In this work, the PVP‐assisted CdS/PbI2 heterojunction UV‐Visible Photodetector was constructed by the sol‐gel spin coating method. The X‐ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS) demonstrated the synthesis and successful complexation of PVP, CdS, and PbI2. The UV‐Visible absorption spectroscopy and UV photoelectron spectroscopy (UPS) measurements of CdS and PbI2 were carried out to prove that the CdS and PbI2 form a type II heterojunction. Compared with pure CdS film photodetector, the CdS (PVP)/PbI2 heterojunction photodetector has self‐powered characteristics, and exhibits excellent photoconductivity in the UV‐Visible with higher switching ratios, detection rates, and faster response times of 1.1 × 105, 9.77 × 1011 Jones and 20 ms, respectively, which has great potential in the field of UV‐Visible self‐powered photodetector.This article is protected by copyright. All rights reserved.

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高性能自供电紫外可见 CdS（PVP）/PbI2 异质结光电探测器

本研究采用溶胶-凝胶旋涂法构建了 PVP 辅助 CdS/PbI2 异质结紫外-可见光光电探测器。X 射线衍射（XRD）、扫描电子显微镜（SEM）和能量色散光谱仪（EDS）证明了 PVP、CdS 和 PbI2 的合成和成功络合。对 CdS 和 PbI2 的紫外可见吸收光谱和紫外光电子能谱（UPS）进行了测量，证明 CdS 和 PbI2 形成了 II 型异质结。与纯 CdS 薄膜光电探测器相比，CdS（PVP）/PbI2 异质结光电探测器具有自供电特性，在紫外-可见光下表现出优异的光电导性，具有更高的开关比、检测率和更快的响应时间，分别为 1.1 × 105、9.77 × 1011 Jones 和 20 ms，在紫外-可见光自供电光电探测器领域具有巨大潜力。本文受版权保护。

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来源期刊

Physica Status Solidi-Rapid Research Letters 物理-材料科学：综合

CiteScore

5.20

自引率

3.60%

发文量

208

审稿时长

1.4 months

期刊介绍： Physica status solidi (RRL) - Rapid Research Letters was designed to offer extremely fast publication times and is currently one of the fastest double peer-reviewed publication media in solid state and materials physics. Average times are 11 days from submission to first editorial decision, and 12 days from acceptance to online publication. It communicates important findings with a high degree of novelty and need for express publication, as well as other results of immediate interest to the solid-state physics and materials science community. Published Letters require approval by at least two independent reviewers. The journal covers topics such as preparation, structure and simulation of advanced materials, theoretical and experimental investigations of the atomistic and electronic structure, optical, magnetic, superconducting, ferroelectric and other properties of solids, nanostructures and low-dimensional systems as well as device applications. Rapid Research Letters particularly invites papers from interdisciplinary and emerging new areas of research.