Network structure organic photovoltaic devices prepared by electrochemical copolymerization

Title
Network structure organic photovoltaic devices prepared by electrochemical copolymerization
Authors
김소연이광희진병두유재웅
Keywords
Organic photovoltaics; Conducting polymercomposite; Electrochemical polymerization; Fullerene; Poly(3-octylthiophene)
Issue Date
2009-01
Publisher
Solar energy materials and solar cells : an international journal devoted to photovoltaic, photothermal, and photochemical solar energy conversion
Citation
VOL 93, NO 1, 129-135
Abstract
Characteristics oftheorganicphotovoltaicdevicespreparedbyin-situelectrochemicalcopolymeriza- tion ofsubstitutedfullerenewithalkylthiophenewerestudied.Theactivelayerwasformedbydirect electrochemicalcopolymerizationbetweenthiophenemoietysubstitutedfullereneand3-octylthio- phene onPEDOT-coatedindiumtinoxide(ITO)glass,wherefullereneisanchoredwithinconducting polymer chainthroughcovalentbonding.Sincetwomonomersutilizedinthisstudyhadanopposite oxidationpotential,thesteppotentialbiasmethodwasusedtocopolymerizethesetwomonomers.Bias potentialandconcentrationofmonomerswerecarefullycontrolledsothatblendratioofcompositefilm wasexactlysameasmonomerfeed.Powerconversionefficiencyofelectrochemicallycopolymerized photovoltaicdevicechangedwithinexperimentalerrorrangesforbeforeandafterheattreatment. Meanwhile,compositefilmspreparedbyspincoatingofblendofpoly(3-octylthiophene)andPCBM showed morphologicalchangesafterheattreatmentat8 1C for1haccordingtofieldemissionscanning electronmicroscopy(FE-SEM)study.Thisstudysuggestsanewapproachforpreventingmigrationof fullerene fromitsoptimizedmorphology.
URI
http://pubs.kist.re.kr/handle/201004/34838
ISSN
0927-0248
Appears in Collections:
KIST Publication > Article
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