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Heterostructured WS 2 /CH 3 NH 3 PbI 3 Photoconductors with Suppressed Dark Current and Enhanced Photodetectivity
Author(s) -
Ma Chun,
Shi Yumeng,
Hu Weijin,
Chiu MingHui,
Liu Zhixiong,
Bera Ashok,
Li Feng,
Wang Hong,
Li LainJong,
Wu Tom
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201600069
Subject(s) - responsivity , materials science , perovskite (structure) , optoelectronics , photodetector , transition metal , nanotechnology , crystallography , chemistry , catalysis , biochemistry
Heterostructured photoconductors based on hybrid perovskites and 2D transition‐metal dichalcogenides are fabricated and characterized. Due to the superior properties of CH 3 NH 3 PbI 3 and WS 2 , as well as the efficient interfacial charge transfer, such photoconductors show high performance with on/off ratio of ≈10 5 and responsivity of ≈17 A W −1 . Furthermore, the response times of the heterostructured photoconductors are four orders of magnitude faster compared to the counterpart of a perovskite single layer.