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A High‐Performance WSe 2 / h ‐BN Photodetector using a Triphenylphosphine (PPh 3 )‐Based n‐Doping Technique
Author(s) -
Jo SeoHyeon,
Kang DongHo,
Shim Jaewoo,
Jeon Jaeho,
Jeon Min Hwan,
Yoo Gwangwe,
Kim Jinok,
Lee Jaehyeong,
Yeom Geun Young,
Lee Sungjoo,
Yu HyunYong,
Choi Changhwan,
Park JinHong
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.201600032
Subject(s) - photodetector , doping , materials science , tungsten diselenide , optoelectronics , triphenylphosphine , chemistry , catalysis , biochemistry , transition metal
The effects of triphenylphosphine (PPh 3 )‐based n‐doping and hexagonal boron nitride ( h ‐BN) insertion on a tungsten diselenide (WSe 2 ) photodetector are systematically studied, and a very high performance WSe 2 / h ‐BN heterostucture‐based photodetector is demonstrated with a record photoresponsivity (1.27 × 10 6 A W −1 ) and temporal photoresponse (rise time: 2.8 ms, decay time: 20.8 ms) under 520 nm wavelength and 5 pW power laser illumination.