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Effects of the graphene content on the conversion efficiency of P3HT: graphene based organic solar cells

journal contribution
posted on 10.08.2015 by R. Bkakri, N. Chehata, A. Ltaief, Olga Kusmartseva, Feodor Kusmartsev, Mo Song, A. Bouazizi
We investigate the effects of the insertion of graphene in the matrix of regioregular poly (3-hexylthiophene-2,5-diyl) (RR-P3HT) on the conversion efficiency of ITO/P3HT:Graphene/Au solar cells. The X-ray diffraction (XRD) measurements show that progressive addition of graphene reduces the degree of order of P3HT lamellae along the hexyl-side direction (a-axis). The insertion of low graphene content in the P3HT matrix reduces the RMS roughness of the P3HT thin film, and improves the optical absorption properties of the device in the visible range. However for high doping level we observe the formation of graphene aggregates which in turn reduces the optical absorption properties of the device. The observed effects arising after addition of graphene to P3HT, and their relationship with the conversion efficiency of the devices are discussed in this work.

History

School

  • Science

Department

  • Physics

Published in

Journal of Physics and Chemistry of Solids

Volume

85

Pages

206 - 211

Citation

BKAKRI, R. ..et al., 2015. Effects of the graphene content on the conversion efficiency of P3HT: graphene based organic solar cells. Journal of Physics and Chemistry of Solids, 85, pp.206-211.

Publisher

© Elsevier

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2015

Notes

This paper is closed access.

ISSN

0022-3697

Language

en

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