title: A Facile Way to Fabricate High-Performance Solution-Processed n-MoS2/p-MoS2 Bilayer Photodetectors.
abstract: Two-dimensional (2D) material has many advantages including high carrier mobilities and conductivity, high optical transparency, excellent mechanical flexibility, and chemical stability, which made 2D material an ideal material for various optoelectronic devices. Here, we developed a facile method of preparing MoS2 nanosheets followed by a facile liquid exfoliation method via ethyl cellulose-assisted doping and utilizing a plasma-induced p-doping approach to generate t effectively the partially oxided MoS2 (p-MoS2) nanosheets from the pristine n-type nanosheets. Moreover, an n-p junction type MoS2 photodetector device with the built-in potentials to separate the photogenerated charges is able to significantly improved visible light response. We have fabricated photodetector devices consisting of a vertically stacked indium tin oxide (ITO)/pristine n-type MoS2 nanosheets/p-MoS2/Ag structure, which exhibit reasonably good performance illumination, as well as high current values in the range of visible wavelength from 350 to 600 nm. We believe that this work provides important scientific insights for photoelectric response properties of emerging atomically layered 2D materials for photovoltaic and other optoelectronic applications.
authors.affiliation: Department of Chemistry and Environmental Engineering, Bengbu College, Bengbu, Anhui, 233030, China. bbyejian@126.com.
authors.forename: Jian
authors.initials: J
authors.lastname: Ye
authors.affiliation: School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, Anhui, 230009, China. lixueL987@163.com.
authors.forename: Xueliang
authors.initials: X
authors.lastname: Li
authors.affiliation: Department of Chemistry and Environmental Engineering, Bengbu College, Bengbu, Anhui, 233030, China. zhjj0311@126.com.
authors.forename: Jianjun
authors.initials: J
authors.lastname: Zhao
authors.affiliation: Department of Chemistry and Environmental Engineering, Bengbu College, Bengbu, Anhui, 233030, China. 1424944588@qq.com.
authors.forename: Xuelan
authors.initials: X
authors.lastname: Mei
authors.affiliation: Department of Chemistry and Environmental Engineering, Bengbu College, Bengbu, Anhui, 233030, China. 554301615@qq.com.
authors.forename: Qian
authors.initials: Q
authors.lastname: Li
keywords: Liquid exfoliation method; Partially oxided MoS2; Photodetectors