title: Photo-sensitivity of large area physical vapor deposited mono and bilayer MoS2.
abstract: We present photosensitivity in large area physical vapour deposited mono and bi-layer MoS2films. Photo-voltaic effect was observed in single layer MoS2without any apparent rectifying junctions, making device fabrication straightforward. For bi-layers, no such effect was present, suggesting strong size effect in light-matter interaction. The photo-voltaic effect was observed to highly direction dependent in the film plane, which suggests that the oblique deposition configuration plays a key role in developing the rectifying potential gradient. To the best of our knowledge, this is the first report of any large area and transfer free MoS2photo device with performance comparable to their exfoliated counterparts.
authors.affiliation: Mechanical & Nuclear Engineering, the Pennsylvania State University, University Park, PA 16802 USA.
authors.forename: Baoming
authors.initials: B
authors.lastname: Wang
authors.affiliation: Chemical & Materials Engineering, University of Dayton, Dayton, OH 45469 USA.
authors.forename: Christopher
authors.initials: C
authors.lastname: Muratore
authors.affiliation: Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright Patterson AFB, OH 45433 USA.
authors.forename: Andrey A
authors.initials: AA
authors.lastname: Voevodin
authors.affiliation: Mechanical & Nuclear Engineering, the Pennsylvania State University, University Park, PA 16802 USA.
authors.forename: Md Amanul
authors.initials: MA
authors.lastname: Haque