聚乙烯亚胺
钙钛矿(结构)
光电探测器
材料科学
光电子学
暗电流
电极
光电效应
电子
物理
化学
结晶学
物理化学
基因
量子力学
生物化学
转染
作者
Genjie Yang,Zijun Wang,Dayong Zhang,Xiangdong Qin,Jiang Huang,Junsheng Yu
标识
DOI:10.1109/jphotov.2020.3044131
摘要
A polyelectrolyte material of ethoxylated polyethylenimine (PEIE) was combined with the conventional electron transport material of [6, 6]-phenyl-C61-butyricacidmethylester (PCBM) as an electron transport layer (ETL), and high-performance perovskite photodetectors (PePDs) consisting of the PEIE:PCBM combination system as the ETL were fabricated. The PEIE:PCBM combined ETL could tune the energy barrier for invert injected hole charges between the interface of ETL and electrode. As a result, the reduced dark current and improved photoresponse of PePDs were realized. The results showed that the obtained devices possessed a high detectivity (D * ) of 4.77 × 10 12 Jones, which was about three folds higher than that of controlled devices with pristine PCBM ETL. Meanwhile, the PePDs exhibited excellent recovery characteristics in light/dark conversion mode. Through a series of structure, morphology, and photoelectric characterization, the detailed mechanisms for the performance improvement of PePDs are disclosed.
科研通智能强力驱动
Strongly Powered by AbleSci AI