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Phototransistors: Graphene/Organic Semiconductor Heterojunction Phototransistors with Broadband and Bi‐directional Photoresponse (Adv. Mater. 49/2018)
Author(s) -
Han Jiayue,
Wang Jun,
Yang Ming,
Kong Xiao,
Chen Xiaoqing,
Huang Zehua,
Guo Hui,
Gou Jun,
Tao Silu,
Liu Zhijun,
Wu Zhiming,
Jiang Yadong,
Wang Xinran
Publication year - 2018
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.201870379
Subject(s) - materials science , photocurrent , optoelectronics , responsivity , graphene , photodiode , heterojunction , pentacene , broadband , organic semiconductor , semiconductor , photodetector , optics , nanotechnology , thin film transistor , physics , layer (electronics)
In article number 1804020 , Jun Wang, Xinran Wang, and co‐workers incorporate an organic heterojunction (C 60 /pentacene) on graphene to realize a broadband (405–1550 nm) phototransistor with high gain and fast response speed. A bidirectional photoresponse (positive and negative photocurrent) is demonstrated at different wavelengths, due to the opposite charge‐transfer direction of the photoexcited carriers, which provides an efficient way to enhance the spectral responsivity and range for graphene detectors.