Effects of PPV-g-PSFu graft copolymer on morphology and power conversion efficiency of bulk heterojunction solar cell base on P3HT/ C 60 blends

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Publication Details

Author list: Seeponkai N., Wootthikanokkhan J., Thanachayanont C.

Publisher: Trans Tech Publications

Publication year: 2012

Volume number: 410

Start page: 357

End page: 360

Number of pages: 4

ISBN: 9783037853160

ISSN: 1022-6680

eISSN: 1662-8985

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84255209174&doi=10.4028%2fwww.scientific.net%2fAMR.410.357&partnerID=40&md5=a5e94a13808c23a3878ef36931ee3ae0

Languages: English-Great Britain (EN-GB)

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Abstract

This research work concerns a study on the effect of donor-acceptor graft copolymer, namely poly-p-phenylene vinylene grafted with polystyrene fullerene (PPV-g-PSFu), on morphology and power conversion efficiency of bulk heterojunction solar cells (BHJ) based on P3HT/C 60. The aim of this work is to investigate the effect of the graft copolymers content (10, 20 and 40 pph) on morphology and efficiency of the solar cells. The copolymer was mixed with P3HT and C 60, by using a solution blending technique. The blend film was fabricated by using a spin coating technique. Power conversion efficiency of the cells was determined by using current density-voltage (J-V) measurements. From the results, it was found that power conversion efficiency (PCE) of various BHJ cells increased from 0.07 ื10 -4 % to 1.45 ื10 -4 % after the copolymer (20 pph) was added. The above change was discussed in the light of some changes in morphology of the P3HT/C 60 blend. Atomic force micrographs (AFM) the various blends showed that, by adding the graft copolymer, the domain size decreased and finer dispersed particle morphology was obtained.

Keywords

Bulkheterojunction, Graft copolymer, Poly(p-phenylene vinylene) (PPV), Power conversion efficiency