title: Epitaxial Ultrathin Organic Crystals on Graphene for High-Efficiency Phototransistors.
abstract: Epitaxially grown ultrathin organic semiconductors on graphene show great promise as highly efficient phototransistors. The devices exhibit a strong photoresponse down to the limit of a monolayer organic crystal, with a photoresponsivity higher than 10(4) A W(-1) and a photoconductive gain over 10(8) . The excellent performance is attributed to the high quality of the organic crystal and interface, a unique feature of van der Waals epitaxy.
authors.affiliation: National Laboratory of Solid State Microstructures, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Liu
authors.affiliation: Department of Physics, Southeast University, Nanjing, 211189, China.|Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA.
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Luo
authors.affiliation: Department of Physics, Southeast University, Nanjing, 211189, China.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Nan
authors.affiliation: School of Microelectronics, Xidian University, Xian, 710071, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Guo
authors.affiliation: National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
authors.affiliation: National Laboratory of Solid State Microstructures, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
authors.forename: Linglong
authors.initials: L
authors.lastname: Zhang
authors.affiliation: National Laboratory of Solid State Microstructures, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
authors.forename: Minmin
authors.initials: M
authors.lastname: Zhou
authors.affiliation: National Laboratory of Solid State Microstructures, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
authors.forename: Ziyi
authors.initials: Z
authors.lastname: Yang
authors.affiliation: National Laboratory of Solid State Microstructures, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Shi
authors.affiliation: National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083, China.
authors.forename: Weida
authors.initials: W
authors.lastname: Hu
authors.affiliation: Department of Physics, Southeast University, Nanjing, 211189, China.
authors.forename: Zhenhua
authors.initials: Z
authors.lastname: Ni
authors.affiliation: Department of Physics, Southeast University, Nanjing, 211189, China.
authors.forename: Teng
authors.initials: T
authors.lastname: Qiu
authors.affiliation: Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI, 53706, USA.
authors.forename: Zongfu
authors.initials: Z
authors.lastname: Yu
authors.affiliation: Department of Electronic Engineering and Materials Science and Technology Research Center, The Chinese University of Hong Kong, Hong Kong SAR, China.
authors.forename: Jian-Bin
authors.initials: JB
authors.lastname: Xu
authors.affiliation: National Laboratory of Solid State Microstructures, School of Electronic Science and Engineering, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.
authors.forename: Xinran
authors.initials: X
authors.lastname: Wang
keywords: 2D; graphene; organic semiconductors; phototransistors; ultrathin