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Chip‐Scale Fabrication of Uniform Lead Halide Perovskites Microlaser Array and Photodetector Array
Author(s) -
Duan Zonghui,
Wang Yujie,
Li Gang,
Wang Shuai,
Yi Ningbo,
Liu Shuai,
Xiao Shumin,
Song Qinghai
Publication year - 2018
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201700234
Subject(s) - halide , perovskite (structure) , photodetector , materials science , fabrication , substrate (aquarium) , optoelectronics , photoelectric effect , yield (engineering) , controllability , nanotechnology , chemistry , inorganic chemistry , crystallography , medicine , alternative medicine , oceanography , mathematics , pathology , metallurgy , geology
Lead halide perovskites have recently attracted attention due to their outstanding photoelectric properties. Hence, perovskite‐based optoelectronic devices are widely studied. Herein, a simple solution‐based one‐step anti‐solvent method to produce well‐controlled and uniform CH 3 NH 3 PbBr 3 ‐based micro‐devices is reported. It is confirmed that the size and mode numbers of the self‐assembled microdisk cavities can be well controlled by modifying the size of the SiO 2 microdisks on the substrate or changing the concentration of the perovskite precursor. With this simple and robust method, the produced CH 3 NH 3 PbBr 3 microdisk arrays are extremely uniform in both their size distribution and emission spectra. Moreover, a perovskite photodetector array with fast rise (<8.3 ms) and decay (<8.3 ms) times was fabricated by periodically patterning the substrate. Based on the high controllability and high reproducibility of the patterned CH 3 NH 3 PbBr 3 microdisk arrays, this cost‐effective and mass‐manufacturable approach significantly increases the production yield of lead halide perovskite microdevices and boosts their ability to be used in practical applications.