Effect of mixed solvents on PCDTBT:PC 70BM based solar cells

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DOIResolve DOI: http://doi.org/10.1016/j.orgel.2011.07.011
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleOrganic Electronics: physics, materials, applications
ISSN1566-1199
Volume12
Issue11
Pages17881793; # of pages: 6
Subject1 ,2-dichlorobenzene; Active area; Air mass; Benzothiadiazoles; Bulk heterojunction; Cosolvents; Device performance; Domain size; Fine tuning; Methyl esters; Mixed solvent; Mixing ratios; Polycarbazoles; Power conversion efficiencies; Butyric acid; Chlorine compounds; Conversion efficiency; Fatty acids; Heterojunctions; Morphology; Polycyclic aromatic hydrocarbons; Polymers; Solar cells; Solvents; Organic solvents
AbstractWe investigated the effect of solvents on the morphology, charge transport and device performance of poly[N-9″-hepta-decanyl-2,7-carbazole-alt-5,5- (4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole)] (PCDTBT) and [6,6]-phenyl C71-butyric acid methyl ester (PC 70BM) based solar cells. To carry out this investigation, chloroform and 1,2-dichlorobenzene were chosen as good solvents of the two compounds. Films prepared with chloroform exhibit larger domains than those prepared with 1,2-dichlorobenzene and their size increases with the amount of PC 70BM. Fine tuning of the domain size was realized by using a solvent of mixed chloroform and 1,2-dichlorobenzene. At a mixing ratio of 50%:50%, a power conversion efficiency of 6.1% was achieved on PCDTBT:PC 70BM (1:3) devices with an active area of 1 cm 2, under air mass 1.5 global (AM 1.5 G) irradiation at 100 mW/cm 2. © 2011 Published by Elsevier B.V. All rights reserved.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Institute for Microstructural Sciences (IMS-ISM)
Peer reviewedYes
NPARC number21271108
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Record identifierf76b2af2-5bfc-4c12-8f5f-957fe6554564
Record created2014-03-24
Record modified2016-05-09
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