Controlling the photoconductivity: graphene oxide and polyaniline self assembled intercalation
Date
2015Source Title
Applied Physics Letters
Print ISSN
0003-6951
Publisher
American Institute of Physics Inc.
Volume
106
Issue
5
Pages
051106-1 - 051106-4
Language
English
Type
ArticleItem Usage Stats
218
views
views
210
downloads
downloads
Abstract
We report on controlling the optoelectronic properties of self-assembled intercalating compound of graphene oxide (GO) and HCl doped polyaniline (PANI). Optical emission and X-ray diffraction studies revealed a secondary doping phenomenon of PANI with -OH and -COOH groups of GO, which essentially arbitrate the intercalation. A control on the polarity and the magnitude of the photoresponse (PR) is harnessed by manipulating the weight ratios of PANI to GO (viz., 1:1.5 and 1:2.2 are abbreviated as PG1.5 and PG2.2, respectively), where ±PR = 100(RDark - RUV-Vis)/RDark and R corresponds to the resistance of the device in dark or UV-Vis illumination. To be precise, the PR from GO, PANI, PG1.5, and PG2.2 are +34%, -111%, -51%, and +58%, respectively.
Keywords
Doping (additives)Intercalation
Polyaniline
X ray diffraction
Doped polyaniline
Graphene oxides
Optical emissions
Optoelectronic properties
Photoresponses
Self-assembled
Weight ratios
X-ray diffraction studies
Graphene