Self-powered X-ray detector based on methylammonium lead tribromide single crystals

被引：16
|
作者：
Xu, Qiang [1 ]
Zhang, Bohao [1 ]
Nie, Jing [1 ]
Zhang, Hang [1 ]
Ouyang, Xiaoping [2 ]
Liu, Jun [2 ]
Liu, Yang [3 ]
机构：
[1] Nanjing Univ Aeronaut & Astronaut, Dept Nucl Sci & Technol, Nanjing 211106, Peoples R China
[2] Northwest Inst Nucl Technol, Xian 710024, Peoples R China
[3] North China Elect Power Univ, Sch Nucl Sci & Engn, Beijing 102206, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2021年 / 859卷
基金：
中国国家自然科学基金;
关键词：
Self-power; X-ray detectors; Perovskite; Schottky diode;
D O I：
10.1016/j.jallcom.2020.157826
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Low-cost, high sensitivity and self-powered radiation detectors are highly demanded for photon flux detection. Here the fabrication of a self-powered X-ray detector with schottky structure is reported. Organic-inorganic perovskite CH3NH3PbBr3 single crystals have been grown on ITO glass with the solution-processed method at relatively low temperature. Low work function Ag has been deposited on the surface of the crystal to form schottky contact. The devices exhibit an obvious response to both the wavelength of 405 nm laser and X-ray photons without external bias. The achieved X-ray sensitivity is up to 2.35 x 10(-4) mu C mu Gy(-1)cm(-2) under 35 kV X-ray exposure without bias. The results demonstrated that this schottky diode based on perovskite enable for energy-saving X-ray detection. (C) 2020 Elsevier B.V. All rights reserved.
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页数：5
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