Photo-Diodes Based on CH3NH3PbCl3 Perovskite Single Crystals by Epitaxial Growth for Ultraviolet Photo-Detection

Frontiers in Physics

Byung Seong Bae¹  Javed Akram²  Yuzhu Pan³  Jing Chen³  Zhiwei Zhao³  Xiaobing Zhang³  Jun Wu³  Qing Li³  Xin Wang³  Yuwei Li³  Haining Yang³  Yubing Xu³  Wei Lei³  Jingda Zhao⁴ 

[1] Department of Electronics & Display Engineering, Hoseo University, Asan, South Korea;Department of Physics, COMSATS University Islamabad, Islamabad, Pakistan;Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, China;State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment, China Nuclear Power Engineering Co. Ltd., Shenzhen, China;Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, China;

关键词: UV detection;    perovskite;    single crystal;    epitaxial growth;    photo-diodes;   

DOI  :  10.3389/fphy.2021.659782

来源: Frontiers

【 摘 要 】

Organic-inorganic hybrid methylammonium lead halide perovskite MAPbX3 (where MA = CH3NH3, and X = Cl, Br, I) single crystals are potential semiconductors for photo-detection due to their excellent optoelectronic performance. In particular, MAPbCl3 single crystal is a wide-band-gap (2.9 eV) semiconductor which is suitable for ultraviolet (UV) detection. In this work, n−-n+ photo-diodes are fabricated through solution-processed epitaxial growth, growing Bi-doped MAPbCl3 epitaxial layer on MAPbCl3 single crystal substrate. The epitaxial layer effectively improves the interface between n−-type and n+-type layers and leads to low dark current. This work provides useful information for UV detection based on perovskites.

【 授权许可】

CC BY