Bulk heterojunction solar cells based on a new low-band-gap polymer: Morphology and performance

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DOIResolve DOI: http://doi.org/10.1016/j.orgel.2011.04.001
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TypeArticle
Journal titleOrganic Electronics: physics, materials, applications
ISSN1566-1199
Volume12
Issue7
Pages12111215; # of pages: 5
SubjectBulk heterojunction; Bulk heterojunction solar cells; Film morphology; Low costs; Low-band-gap polymers; Mobility; Nano scale; Photovoltaic performance; Photovoltaic technology; Polymer materials; Polymer-fullerene; Power conversion efficiencies; Conjugated polymers; Conversion efficiency; Morphology; Nanostructured materials; Photovoltaic effects; Solar cells; Solar power generation; Thiophene; Heterojunctions
AbstractPolymer-fullerene bulk heterojunction (BHJ) solar cells have gained much attention in the past few years due to their potential as a low cost photovoltaic technology. The state-of-the-art power conversion efficiency (PCE) has been improved to 7% regime by the recent development of thieno[3,4-b] thiophene based low-band-gap polymers. This paper reports a new low-band-gap polymer with alternating thieno[3,4-b]thiophene and benzo[1,2-b:4,5-b′] dithiophene units for applications in BHJ solar cells. By optimizing the nano-scale morphology with DIO (1,8-diiodooctane) additive, the PCE of BHJ solar cells based on this new polymer has been improved dramatically from 1.4% to 4.8%. The correlation between photovoltaic performance and film morphology has been established for this new polymer/fullerene system. © 2011 Elsevier B.V. All rights reserved.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Microstructural Sciences (IMS-ISM); NRC Institute for Chemical Process and Environmental Technology (ICPET-ITPCE)
Peer reviewedYes
NPARC number21271340
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Record identifier328c7a01-932b-41b4-bbf7-9e9aeda60de8
Record created2014-03-24
Record modified2016-05-09
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