title: High-Performance Phototransistor of Epitaxial PbS Nanoplate-Graphene Heterostructure with Edge Contact.
abstract: Fast infrared response (rising time = 24 ms) and ultrahigh photoconductive gain (10(8) ) are obtained in epitaxial PbS-nanoplate-graphene heterostructures. Combining density functional theory with experiments, this study finds single-crystalline PbS nanoplates are covalently bound to the grapheme edge with strong chemical hybridization, which offers a fast carrier transmission path.
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China.|Department of Electrical and Computer Engineering, National University of Singapore, 117576, Singapore.
authors.forename: Qisheng
authors.initials: Q
authors.lastname: Wang
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Wen
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China.
authors.forename: Peng
authors.initials: P
authors.lastname: He
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China.
authors.forename: Lei
authors.initials: L
authors.lastname: Yin
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China.
authors.forename: Zhenxing
authors.initials: Z
authors.lastname: Wang
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China.
authors.forename: Feng
authors.initials: F
authors.lastname: Wang
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China.
authors.forename: Kai
authors.initials: K
authors.lastname: Xu
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China.
authors.forename: Yun
authors.initials: Y
authors.lastname: Huang
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China.
authors.forename: Fengmei
authors.initials: F
authors.lastname: Wang
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China.
authors.forename: Chao
authors.initials: C
authors.lastname: Jiang
authors.affiliation: CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China.
authors.forename: Jun
authors.initials: J
authors.lastname: He
keywords: PbS nanoplate-graphene heterostructures; chemical hybridization; edge contacts; phototransistors