01703nas a2200145   4500008004100000245008300041210006900124260000800193300001400201490000800215520117800223100002201401700001901423856011501442       2017                        eng d00aUltraviolet photosensor based on few layered reduced graphene oxide nanosheets0 aUltraviolet photosensor based on few layered reduced graphene ox  cOCT  a374-379  0 v4183 aReduced graphene oxide (RGO), a two-dimensional (2D) system, has attracted much interest in photonic applications owing to its ability to absorb light over a broad wavelength. This leads to several studies on RGO-based photosensors. In this paper, chemical oxidation of graphite was carried out at room temperature for the preparation of large area reduced graphene oxide using a modified Hummer's method. The as-prepared reduced graphene oxide was characterized by XRD, Raman spectroscopy, FESEM, and TEM to confirm the absence of impurities and to ascertain their morphology. In addition, the as-prepared reduced graphene oxide for its possible application as UV photosensor is reported. The electric and optoelectronic properties of RGO based UV photosensor shows a fast response and recovery time of 1 s and 3 s; high photoresponsitivity (3.74AW(-1)) and quantum efficiency (1274%) indicating that the graphene oxide is an important material for high performance photosensor. This work demonstrates the ultrafast photoresponse with high photoresponsivity, proving its potential as a promising material for optoelectronic devices. 2016 Elsevier B.V. All rights reserved.1 aShelke, Nitin, T.1 aKarche, B., R.  uhttps://library.ncl.res.in/content/ultraviolet-photosensor-based-few-layered-reduced-graphene-oxide-nanosheets