Improving Photoelectric Conversion with Broadband Perovskite Metasurface
Improving Photoelectric Conversion with Broadband Perovskite Metasurface
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DOI：
10.1021/acs.nanolett.2c01979
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发表时间：
2022-08-04
期刊：
影响因子：
10.8
通讯作者：
Wang, Mu
中科院分区：
文献类型：
--
作者：
He, Jie;Li, Cheng-Yao;Wang, Mu
The miniaturization and integration of optoelectronic devices require progressive size reduction of active layers, resulting in less optical absorption and lower quantum efficiency. In this work, we demonstrate that introducing a metasurface made of hybrid organic-inorganic perovskite (HOIP) can significantly enhance broadband absorption and improve photon-to-electron conversion, which roots from exciting Mie resonances together with suppressing optical transmission. On the basis of the HOIP metasurface, a broadband photodetector has been fabricated where photocurrent boosts more than 10 times in the frequency ranging from ultraviolet to visible. The device response time is less than 5.1 mu s at wavelengths 380, 532, and 710 nm, and the relevant 3 dB bandwidth is over 0.26 MHz. Moreover, this photodetector has been applied as a signal receiver for transmitting 2D color images in broadband optical communication. These results accentuate the practical applications of HOIP metasurfaces in novel optoelectronic devices for broadband optical communication.
