High-performance self-powered flexible photodetectors based on Sb₂Te₃/Te heterojunction nanostructures

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-09-30 DOI:10.1016/j.matlet.2025.139593

Jiayin Wang , Kefei Cheng , Chuangjian Li , Fan Wang , Xianghan Ye , Kaijia Xu , Yinyin Qian

引用次数: 0

Abstract

The growing demand for optoelectronic applications in portable smart devices has driven considerable interest in flexible photodetectors (PDs), owing to their outstanding flexibility and portability. In this study, we demonstrate a straightforward fabrication of flexible PDs based on self-assembled Sb₂Te₃/Te multilayer heterojunction nanostructure. The device exhibits a self-powered broadband photoresponse (405–980 nm), achieving a responsivity of 0.2 A/W and a specific detectivity of 2.2 × 10¹⁰ Jones under 405 nm illumination. Mechanical bending tests further reveal excellent stability and robustness against external deformation. These results not only demonstrate a promising route toward high-performance flexible PDs, but also highlight the novelty of Sb₂Te₃/Te heterojunction engineering compared with previously reported systems.

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基于Sb₂Te₃/Te异质结纳米结构的高性能自供电柔性光电探测器

由于其出色的灵活性和便携性，便携式智能设备对光电应用的需求不断增长，推动了对柔性光电探测器（pd）的极大兴趣。在这项研究中，我们展示了一种基于自组装Sb2Te3/Te多层异质结纳米结构的柔性pd的直接制造。该器件具有自供电的宽带光响应（405 - 980 nm），在405 nm照明下的响应率为0.2 a /W，比探测率为2.2 × 1010 Jones。机械弯曲试验进一步揭示了优异的稳定性和抗外部变形的坚固性。这些结果不仅展示了高性能柔性pd的发展前景，而且与之前报道的系统相比，突出了Sb2Te3/Te异质结工程的新颖性。

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

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive