材料科学
光电子学
钙钛矿(结构)
太赫兹辐射
光伏
超材料
光电探测器
光电导性
光子学
超材料吸收剂
激光器
硫化铅
光学
光伏系统
物理
量子点
工程类
可调谐超材料
生物
化学工程
生态学
作者
Manukumara Manjappa,Yogesh Kumar Srivastava,Ankur Solanki,Abhishek Kumar,Tze Chien Sum,Ranjan Singh
标识
DOI:10.1002/adma.201605881
摘要
The recent meteoric rise in the field of photovoltaics with the discovery of highly efficient solar‐cell devices is inspired by solution‐processed organic–inorganic lead halide perovskites that exhibit unprecedented light‐to‐electricity conversion efficiencies. The stunning performance of perovskites is attributed to their strong photoresponsive properties that are thoroughly utilized in designing excellent perovskite solar cells, light‐emitting diodes, infrared lasers, and ultrafast photodetectors. However, optoelectronic application of halide perovskites in realizing highly efficient subwavelength photonic devices has remained a challenge. Here, the remarkable photoconductivity of organic–inorganic lead halide perovskites is exploited to demonstrate a hybrid perovskite–metamaterial device that shows extremely low power photoswitching of the metamaterial resonances in the terahertz part of the electromagnetic spectrum. Furthermore, a signature of a coupled phonon–metamaterial resonance is observed at higher pump powers, where the Fano resonance amplitude is extremely weak. In addition, a low threshold, dynamic control of the highly confined electric field intensity is also observed in the system, which could tremendously benefit the new generation of subwavelength photonic devices as active sensors, low threshold optically controlled lasers, and active nonlinear devices with enhanced functionalities in the infrared, optical, and the terahertz parts of the electromagnetic spectrum.
科研通智能强力驱动
Strongly Powered by AbleSci AI