Feasibility for enhancing power conversion efficiency of P3HT/C60 polymer solar cell by adding donor-acceptor block copolymer as a compatibilizer

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Publication Details

Author list: Rattanathamwat N., Wootthikanokkhan J., Nimitsiriwat N., Thanachayanont C., Asawapirom U.

Publisher: Trans Tech Publications

Publication year: 2013

Volume number: 747

Start page: 313

End page: 316

Number of pages: 4

ISBN: 9783037857717

ISSN: 1022-6680

eISSN: 1662-8985

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884754323&doi=10.4028%2fwww.scientific.net%2fAMR.747.313&partnerID=40&md5=d6a4e22cebb4c98cee54d4fa77bd68fd

Languages: English-Great Britain (EN-GB)

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Abstract

This research work has concern a synthesis and application of donor-acceptor block copolymer, namely poly(3-hexyl thiophene)-b-fullerene grafted polystyrene, in bulk heterojunction polymer solar cell based on P3HT/C60 system. The primary aim of this work is to explore a feasibility for using the above block copolymer as a compatibilizer for controlling morphology and enhancing power conversion efficiency of the solar cell. The block copolymer was firstly prepared by synthesizing the P3HT macrointiator via a multiple synthetic route, in accordance with the methods described in literatures. After that, the macroinitiator was further reacted with styrene and chloromethyl:styrene via an ATRP mechanism. Finally, the above copolymer was functionalized with fullerene via an ATRA mechanism to obtain the donor-acceptor block copolymer. Chemical structures, molecular weight and thermal properties of the prepared block copolymer was confirmed by using FTIR, 1H-NMR, TGA, and UV-Visible spectroscopy technique. Next, the polymer solar cells were fabricated by coating P3HT/C60 onto ITO glass, using a spin coating technique. Au electrode was then coated on top of the active layer, using a thermal evaporator. From the results, it was found that power conversion efficiency (PCE) of the normal cell (P3HT/C60) is 0.02%. However by adding the prepared block copolymer, PCE of the cell increased to 0.23%. ฉ (2013)Trans Tech Publications,Switzerland.

Keywords

block copolymer, Compatibilizer, P3HT macrointiator