title: Improved photoelectrical properties of MoS(2) films after laser micromachining.
abstract: Direct patterning of ultrathin MoS2 films with well-defined structures and controllable thickness is appealing since the properties of MoS2 sheets are sensitive to the number of layer and surface properties. In this work, we employed a facile, effective, and well-controlled technique to achieve micropatterning of MoS2 films with a focused laser beam. We demonstrated that a direct focused laser beam irradiation was able to achieve localized modification and thinning of as-synthesized MoS2 films. With a scanning laser beam, microdomains with well-defined structures and controllable thickness were created on the same film. We found that laser modification altered the photoelectrical property of the MoS2 films, and subsequently, photodetectors with improved performance have been fabricated and demonstrated using laser modified films.
authors.affiliation: Department of Physics, National University of Singapore , 2 Science Drive 3, Singapore 117542, Singapore.
authors.forename: Junpeng
authors.initials: J
authors.lastname: Lu
authors.forename: Jia Hui
authors.initials: JH
authors.lastname: Lu
authors.forename: Hongwei
authors.initials: H
authors.lastname: Liu
authors.forename: Bo
authors.initials: B
authors.lastname: Liu
authors.forename: Kim Xinhui
authors.initials: KX
authors.lastname: Chan
authors.forename: Jiadan
authors.initials: J
authors.lastname: Lin
authors.forename: Wei
authors.initials: W
authors.lastname: Chen
authors.forename: Kian Ping
authors.initials: KP
authors.lastname: Loh
authors.forename: Chorng Haur
authors.initials: CH
authors.lastname: Sow