
Complete optical absorption in hybrid halide perovskites based on critical coupling in the communication band
Author(s) -
Ziqiang Cheng,
Xin Luo,
Liang Xu,
Xiang Zhai,
Lingling Wang
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.392998
Subject(s) - finite difference time domain method , materials science , absorption (acoustics) , optics , polarization (electrochemistry) , wavelength , coupling (piping) , optoelectronics , halide , physics , chemistry , inorganic chemistry , metallurgy
In order to remarkably enhance the absorption capability of (CH 3 NH 3 )PbI 3 , a tunable narrow-band (CH 3 NH 3 )PbI 3 -based perfect absorber based on the critical coupling with guided resonance is proposed. By using the finite-difference time-domain (FDTD) simulations, a complete absorption peak is achieved at the wavelength of 1310 nm. Moreover, we have compared the simulation results with theoretical calculations, which agree well with each other. By changing related structural parameters, the wavelength of absorption peak can be tuned effectively. Furthermore, the proposed absorber can tolerate a relatively wide range of incident angles and demonstrate polarization-independence. In addition to (CH 3 NH 3 )PbI 3 , the complete optical absorption in the other halide perovskites can be realized by the same mechanism.