{ "id": "1211.3096", "version": "v1", "published": "2012-11-13T20:16:02.000Z", "updated": "2012-11-13T20:16:02.000Z", "title": "Field-effect transistors and intrinsic mobility in ultra-thin MoSe2 layers", "authors": [ "S. Larentis", "B. Fallahazad", "E. Tutuc" ], "comment": "4 pages, 4 figures; to appear in Appl. Phys. Lett", "journal": "Appl. Phys. Lett. 101, 223104 (2012)", "doi": "10.1063/1.4768218", "categories": [ "cond-mat.mes-hall", "cond-mat.mtrl-sci" ], "abstract": "We report the fabrication of back-gated field-effect transistors (FETs) using ultra-thin, mechanically exfoliated MoSe2 flakes. The MoSe2 FETs are n-type and possess a high gate modulation, with On/Off ratios larger than 106. The devices show asymmetric characteristics upon swapping the source and drain, a finding explained by the presence of Schottky barriers at the metal contact/MoSe2 interface. Using four-point, back-gated devices we measure the intrinsic conductivity and mobility of MoSe2 as a function of gate bias, and temperature. Samples with a room temperature mobility of ~50 cm2/V.s show a strong temperature dependence, suggesting phonons are a dominant scattering mechanism.", "revisions": [ { "version": "v1", "updated": "2012-11-13T20:16:02.000Z" } ], "analyses": { "subjects": [ "85.30.Tv" ], "keywords": [ "ultra-thin mose2 layers", "field-effect transistors", "intrinsic mobility", "room temperature mobility", "high gate modulation" ], "tags": [ "journal article" ], "publication": { "journal": "Applied Physics Letters", "year": 2012, "month": "Nov", "volume": 101, "number": 22, "pages": 223104 }, "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2012ApPhL.101v3104L" } } }