Title

Position dependent photodetector from large area reduced graphene oxide thin films

Authors

Authors

S. Ghosh; B. K. Sarker; A. Chunder; L. Zhai;S. I. Khondaker

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

TRANSPARENT; REDUCTION; DEVICES; SHEETS; Physics, Applied

Abstract

We fabricated large area infrared photodetector devices from thin film of chemically reduced graphene oxide (RGO) sheets and studied their photoresponse as a function of laser position. We found that the photocurrent either increases, decreases, or remain almost zero depending upon the position of the laser spot with respect to the electrodes. The position sensitive photoresponse is explained by Schottky barrier modulation at the RGO film-electrode interface. The time response of the photocurrent is dramatically slower than single sheet of graphene possibly due to disorder from the chemical synthesis and interconnecting sheets. (C) 2010 American Institute of Physics. [doi:10.1063/1.3415499]

Journal Title

Applied Physics Letters

Volume

96

Issue/Number

16

Publication Date

1-1-2010

Document Type

Article

Language

English

First Page

3

WOS Identifier

WOS:000277020600051

ISSN

0003-6951

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