High-Performance Surface Barrier X-ray Detector Based on Methylammonium Lead Tribromide Single Crystals

被引：99

作者：

Xu, Qiang ^{[1
]}

Shao, Wenyi ^{[1
]}

Li, Yang ^{[1
]}

Zhang, Xinlei ^{[1
]}

Ouyang, Xiao ^{[2
]}

Liu, Jun ^{[3
]}

Liu, Bo ^{[4
]}

Wu, Zhengyun ^{[5
]}

Ouyang, Xiaoping ^{[1
,2
]}

Tang, Xiaobin ^{[1
]}

Jia, Wenbao ^{[1
,6
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Dept Nucl Sci & Engn, Nanjing 211106, Jiangsu, Peoples R China

[2] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China

[3] Northwest Inst Nucl Technol, Xian 710024, Shaanxi, Peoples R China

[4] Tongji Univ, Sch Phys Sci & Engn, Shanghai 200092, Peoples R China

[5] Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China

[6] Collaborat Innovat Ctr Radiat Med Jiangsu Higher, Suzhou 215000, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2019年 / 11卷 / 10期

基金：

中国国家自然科学基金;

关键词：

surface barrier; X-ray detector; perovskite single crystal; Schottky diode; fast response; RADIATION SENSORS; PHOTOCONDUCTORS; TEMPERATURE;

D O I：

10.1021/acsami.8b21605

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Hybrid methylammonium lead tribromide (MAPbBr(3)) perovskite has attracted great attention in ionization radiation detection. However, the charge collection remains a challenge. Here, fast response and high-sensitivity X-ray detection based on MAPbBr(3) single crystals with a surface barrier Schottky diode has been achieved at room temperature. The Schottky surface barrier can overcome the large leakage current at a high electrical field, enabling us to reduce the noise and increase the charge collection efficiency. This surface barrier device has been demonstrated a 3 times improvement over the photoconductor based X-ray detector, which enables usage in nuclear medicine, especially for X-ray imaging technology.

引用

页码：9679 / 9684

页数：6

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