用于高性能偏振探测和加密通信的近完全耗尽型 Pt/Sb2Se3/ZnO 混合结

IF 5.7 2区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Zhipeng Sun, Fazhen Zhang, Mengdan Chen, Tao He, Yun Wei, Caixia Kan, Mingming Jiang and Peng Wan
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引用次数: 0

摘要

低维偏振光电探测器领域已成为光通信、遥感、成像研究和其他研究的主要焦点。在保持其他关键检测性能指标的同时实现高偏振各向异性仍然是一个重大障碍。本研究提出了基于铂/Sb2Se3 肖特基结和 Sb2Se3/ZnO 异质结的自供电混合结偏振光电探测器。Pt/Sb2Se3/ZnO 混合结光电探测器具有 120 mA W-1 的高响应率、1012 Jones(1000 Hz)的高比检测率,以及在零偏压下 880 纳米光照射时的超快上升/衰减时间(833 μs/830 μs)。具体来说,所设计器件的偏振各向异性测量值为 1.69。根据有限元法计算,光电探测器良好的整体光电特性归功于近乎全耗尽混合结引入的内置电场的一致性和协同性,它促进了载流子的有效分离并减少了重组损耗。由于光电探测器可用作偏振光接收器,因此可进一步应用于近红外加密通信。这项工作为设计高性能偏振光检测器提供了一条具有现实应用前景的途径。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Near fully depleted Pt/Sb2Se3/ZnO hybrid junctions for high-performance polarized detection and encrypted communication

Near fully depleted Pt/Sb2Se3/ZnO hybrid junctions for high-performance polarized detection and encrypted communication

The field of low-dimensional polarized photodetectors has become a leading focus for optical communications, remote sensing, imaging research and other studies. Achieving high polarization anisotropy while maintaining other critical detection performance metrics continues to be a significant hurdle. In this work, self-powered hybrid junction polarized photodetectors, which are based on a Pt/Sb2Se3 Schottky junction combined with a Sb2Se3/ZnO heterojunction, are proposed. The Pt/Sb2Se3/ZnO hybrid junction photodetector has a high responsivity of 120 mA W−1, a high specific detectivity of 1012 Jones (1000 Hz), and an ultrafast rise/decay time (833 μs/830 μs) upon 880 nm light irradiation at zero bias. Specifically, the polarization anisotropy of the designed device is measured to be 1.69. Based on the finite element method calculation, the favorable overall photoelectric properties of the photodetectors are attributed to the consistency and synergy of the built-in electric field introduced by the near fully depleted hybrid junctions, which promote the effective separation of carriers and reduce recombination losses. Because the photodetector can be used as a polarized light receiver, it can be further applied in near-infrared encrypted communication. This work provides a promising route for the design of high-performance polarized photodetectors towards realistic applications.

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来源期刊
Journal of Materials Chemistry C
Journal of Materials Chemistry C MATERIALS SCIENCE, MULTIDISCIPLINARY-PHYSICS, APPLIED
CiteScore
10.80
自引率
6.20%
发文量
1468
期刊介绍: The Journal of Materials Chemistry is divided into three distinct sections, A, B, and C, each catering to specific applications of the materials under study: Journal of Materials Chemistry A focuses primarily on materials intended for applications in energy and sustainability. Journal of Materials Chemistry B specializes in materials designed for applications in biology and medicine. Journal of Materials Chemistry C is dedicated to materials suitable for applications in optical, magnetic, and electronic devices. Example topic areas within the scope of Journal of Materials Chemistry C are listed below. This list is neither exhaustive nor exclusive. Bioelectronics Conductors Detectors Dielectrics Displays Ferroelectrics Lasers LEDs Lighting Liquid crystals Memory Metamaterials Multiferroics Photonics Photovoltaics Semiconductors Sensors Single molecule conductors Spintronics Superconductors Thermoelectrics Topological insulators Transistors
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