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Photoexfoliation of two-dimensional materials through continuous UV irradiation.

Photoexfoliation of two-dimensional materials through continuous UV irradiation.

Authors :
Lin WC
Chuang MK
Keshtov ML
Sharma GD
Chen FC
Source :
Nanotechnology [Nanotechnology] 2017 Mar 24; Vol. 28 (12), pp. 125604. Date of Electronic Publication: 2017 Feb 21.
Publication Year :
2017

Abstract

This paper describes the preparation of fluorinated graphene nanosheets (FGNs) through photoexfoliation of fluorinated graphite (FG) in the liquid phase. We discovered that UV irradiation of FG dispersions in N-methyl-2-pyrolidone facilitated exfoliation to give FGNs. Transmission electron microscopy and atomic force microscopy revealed that the average thickness of the FGNs was approximately 3 nm; they were considerably thinner than the nanosheets prepared using a conventional sonication approach. Furthermore, when the FGNs were deposited uniformly onto substrates (through spin coating), they formed effective cathode interlayers for polymer solar cells (PSCs), the efficiency of which was 60% greater than that of PSCs containing FGNs prepared through ultrasonication.

Details

Language :
English
ISSN :
1361-6528
Volume :
28
Issue :
12
Database :
MEDLINE
Journal :
Nanotechnology
Publication Type :
Academic Journal
Accession number :
28220757
Full Text :
https://doi.org/10.1088/1361-6528/aa5c79