Triple-cation perovskite solar cells for visible light communications

• 作者: GRAHAM ATURNBULL HARALD HAAS IFOR DWSAMUEL IMAN TAVAKKOLNIA LETHY KJAGADAMMA NATALIE AMICA PAVLOS MANOUSIADIS RUI BIAN
• 来源期刊: 光子学研究:英文版
• 学科: 化学
• 关键词: PEROVSKITE VISIBLE ILLUMINATION
• 年，卷（期）: 2020,（8）
• 页码范围: I0001-I0009
• 页数: 9页
• 分类号: O61

摘要

Hybrid perovskite materials are widely researched due to their high absorptivity,inexpensive synthesis,and promise in photovoltaic devices.These materials are also of interest as highly sensitive photodetectors.In this study,their potential for use in visible light communication is explored in a configuration that allows for simultaneous energy and data harvesting.Using a triple-cation material and appropriate device design,a new record data rate for perovskite photodetectors of 56 Mbps and power conversion efficiencies above 20%under white LED illumination are achieved.With this device design,the−3 dB bandwidth is increased by minimizing the dominating time constant of the system.This correlation between the bandwidth and time constant is proved using measurements of time-resolved photoluminescence,transient photovoltage,and device resistance.