Polymer/Polymer Blend Solar Cells with 2.0% Efficiency Developed by Thermal Purification of Nanoscale-Phase-Separated Morphology

We have fabricated polymer/polymer blend solar cells consisting of poly(3-hexylthiophene) as the electron donor and poly{2,7-(9,9-didodecylfluorene)-alt-5,5-[4′,7′-bis(2-thienyl)-2′,1′,3′-benzothiadiazole]} as the acceptor. The power conversion efficiency (PCE) was strongly dependent on solvents emp...

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Veröffentlicht in:	ACS applied materials & interfaces 2011-08, Vol.3 (8), p.2924-2927
Hauptverfasser:	Mori, Daisuke, Benten, Hiroaki, Kosaka, Junya, Ohkita, Hideo, Ito, Shinzaburo, Miyake, Kunihito
Format:	Artikel
Sprache:	eng
Schlagworte:	Chlorobenzenes - chemistry Chloroform - chemistry Fluorescent Dyes - chemistry Microscopy, Atomic Force Nanotechnology Polymers - chemistry Solar Energy Temperature Thiophenes - chemistry
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creator	Mori, Daisuke Benten, Hiroaki Kosaka, Junya Ohkita, Hideo Ito, Shinzaburo Miyake, Kunihito
description	We have fabricated polymer/polymer blend solar cells consisting of poly(3-hexylthiophene) as the electron donor and poly{2,7-(9,9-didodecylfluorene)-alt-5,5-[4′,7′-bis(2-thienyl)-2′,1′,3′-benzothiadiazole]} as the acceptor. The power conversion efficiency (PCE) was strongly dependent on solvents employed for spin coating. The best PCE of 2.0% was obtained for thermally annealed devices prepared from a chloroform solution, in contrast to devices fabricated from chlorobenzene and o-dichlorobenzene solutions. On the basis of the morphology–performance relationship in the polymer blends examined by atomic force microscopy and the photoluminescence quenching measurements, we conclude that the highly efficient performance is achieved by thermal purification of nanoscale-phase-separated domains formed by spin coating from chloroform.
doi_str_mv	10.1021/am200624s
format	Article
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Mater. Interfaces</addtitle><date>2011-08-24</date><risdate>2011</risdate><volume>3</volume><issue>8</issue><spage>2924</spage><epage>2927</epage><pages>2924-2927</pages><issn>1944-8244</issn><eissn>1944-8252</eissn><abstract>We have fabricated polymer/polymer blend solar cells consisting of poly(3-hexylthiophene) as the electron donor and poly{2,7-(9,9-didodecylfluorene)-alt-5,5-[4′,7′-bis(2-thienyl)-2′,1′,3′-benzothiadiazole]} as the acceptor. The power conversion efficiency (PCE) was strongly dependent on solvents employed for spin coating. The best PCE of 2.0% was obtained for thermally annealed devices prepared from a chloroform solution, in contrast to devices fabricated from chlorobenzene and o-dichlorobenzene solutions. 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subjects	Chlorobenzenes - chemistry Chloroform - chemistry Fluorescent Dyes - chemistry Microscopy, Atomic Force Nanotechnology Polymers - chemistry Solar Energy Temperature Thiophenes - chemistry
title	Polymer/Polymer Blend Solar Cells with 2.0% Efficiency Developed by Thermal Purification of Nanoscale-Phase-Separated Morphology
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