材料科学
光电子学
光电探测器
光电效应
雷
钙钛矿(结构)
反射(计算机编程)
光学
不透明度
全内反射
光电传感器
计算机科学
电气工程
工程类
物理
化学工程
程序设计语言
作者
Rui Wang,Hai Zhou,Bowei Wu,Dingjun Wu,Tao Li,Hanbin Wang,Xiaoniu Peng,Jun Zhang,Hao Wang
标识
DOI:10.1021/acs.jpclett.1c02177
摘要
For most commercial photodetectors (PDs), incident light is illuminated from the top or side of the device, but the opaque electrode (gold, copper, or aluminum, etc.) on the top will block part of the light from entering, wasting the efficiency of light utilization. Herein, to solve this issue, we introduced perovskite nanonet PDs with a hollow vertical structure by using a polystyrene microsphere template. Compared with ordinary thin film devices, our reticulated hollow vertical structure devices not only can enable easy entrance of the light from the reticulated hollow surface of the devices but also can reduce the reflection of light, resulting in better device performance. For our optimal CsPbBr3 perovskite PDs, high photoelectric performances were achieved with the switching ratio up to 4.17 × 104, a detectivity of 7.44 × 1011 Jones, a linear dynamic range of 108 dB, and the rise/fall time of 0.1/0.16 ms. More importantly, because of the reticulated hollow structure, our device performance showed less reduction when the incident light was illuminated from the top than from the bottom. These results may be of great reference value for improving the photoelectric performance of silicon-based devices or deep ultraviolet PDs.
科研通智能强力驱动
Strongly Powered by AbleSci AI