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Hybrid Bilayer WSe 2 –CH 3 NH 3 PbI 3 Organolead Halide Perovskite as a High‐Performance Photodetector
Author(s) -
Lu Junpeng,
Carvalho Alexandra,
Liu Hongwei,
Lim Sharon Xiaodai,
Castro Neto Antonio H.,
Sow Chorng Haur
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201603557
Subject(s) - photodetector , perovskite (structure) , halide , monolayer , bilayer , materials science , transition metal , optoelectronics , surface modification , nanotechnology , chemistry , inorganic chemistry , crystallography , catalysis , organic chemistry , membrane , biochemistry
A high‐performance 2D photodetector based on a bilayer structure comprising a WSe 2 monolayer and CH 3 NH 3 PbI 3 organolead halide perovskite is reported. High performance is realized by modification of the WSe 2 monolayer with laser healing and perovskite functionalization. After modification, the output of the device was three orders of magnitude better than the pristine device; the performance is superior to that of most of the 2D photodetectors based on transition‐metal‐dichalcogenides (TMDs). This result indicates that combinatory TMDs–halide perovskite hybrids can be promising building blocks in optoelectronics.