Enhancing photo and X-ray detection performance of (BDA)CsPb2Br7 perovskite single crystals by removing surface defects

Shilin Liu, Bao Xiao, Dou Zhao, Menghua Zhu, Wanqi Jie, Bangzhi Ge, Chongjian Zhou, Yadong Xu

科研成果: 期刊稿件文章同行评审

摘要

Two-dimensional (2D) hybrid perovskite single crystals are promising photovoltaic materials. However, the single crystals grown from solution usually respond poorly to light and other charged particles. The 2D (BDA)CsPb2Br7 single crystals (BDA = 1,4-butanediamine) are grown from a supersaturated solution. The macroscopical growth steps are present on the surface, leading to a large leakage current during device operation. The surface defects are removed to expose a clean and flat surface. This well-defined crystallographic surface enables an Ohmic contact with the electrode, which minimized the dark current and baseline drift. Consequently, the assembled devices exhibit an enhanced response to LED light and X-rays, revealing the surface defect to be one of the culprits underneath the poor performance of solution-grown perovskite single crystals.

源语言英语
文章编号173231
期刊Journal of Alloys and Compounds
976
DOI
出版状态已出版 - 5 3月 2024

指纹

探究 'Enhancing photo and X-ray detection performance of (BDA)CsPb2Br7 perovskite single crystals by removing surface defects' 的科研主题。它们共同构成独一无二的指纹。

引用此