研究红宝石/Bi2Se3 混合范德华异质结的高分辨力自供电光电探测器

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

Materials Letters Pub Date : 2024-10-22 DOI:10.1016/j.matlet.2024.137608

Sartaj Wali , Abdur Rahim , Inas A. Ahmed , Katabathini Narasimharao , Muhammad Shafi , Muhammad Khan

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引用次数: 0

摘要

本文研究了具有原子突变界面的有机红柱石和拓扑绝缘体 Bi2Se3 的范德华异质结构，其在电子和光电设备中的应用令人兴奋。这种有机/无机异质结构（OIH）是通过简单的两步物理气相沉积工艺制备的；基于这种混合结构，随后构建了一种自供电光电探测器。异质表面的狄拉克表面态增强了光生载流子的分裂和转移，从而改善了器件特性。在 1064 纳米波长下，所制备的光电探测器显示出最大响应率（6.37 A/W）、高检测率（3.42 × 1010 Jones）以及超快的光响应速度（上升时间（1.17 µs）和衰减时间（1.59 µs））。这些令人鼓舞的结果表明，这些光致发光器件可用于各种光检测应用，并有可能开发出新的器件。

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Investigation of high-detectivity self-powered photodetectors of Rubrene/Bi2Se3 hybrid Van der Waals heterojunction

This paper investigates the Vander Waals heterostructure of organic rubrene and topological insulator Bi₂Se₃ with an atomically abrupt interface with exciting applications in electronic and optoelectronic devices. This organic/inorganic heterostructure (OIH) was prepared using a simple two-step physical vapor deposition process; based on this hybrid structure, a self-powered photodetector was then constructed. The Dirac surface state at the heterointerface enhances the splitting and transferring of photo-generated carriers, resulting in improved device characteristics. Under 1064 nm, the prepared photodetectors demonstrated a maximum responsivity (6.37 A/W), a high detectivity (3.42 × 10¹⁰ Jones), and ultrafast photoresponse speeds with rise time (1.17 µs) and decay time (1.59 µs), respectively. These promising results suggest that these PDs can be used in various photodetection applications and may lead to developing new devices.

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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