Photovoltaic and photophysical properties of a novel bis-3-hexylthiophene substituted quinoxaline derivative |
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| Authors: | Serap Gü nes, Derya Baran, G rkem Gü nbas, Funda
zyurt, Anita Fuchsbauer, Niyazi Serdar Sariciftci,Levent Toppare |
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| Affiliation: | aLinz Institute for Organic Solar Cells (LIOS), Johannes Kepler University Linz, Physical Chemistry, Altenberger Strasse 69, A-4040 Linz, Austria;bYildiz Technical University, Faculty of Arts and Science, Department of Physics, Davutpasa Campus, 34210 Esenler, Istanbul, Turkey;cMiddle East Technical University, Faculty of Arts and Science, Department of Chemistry, 06531 Ankara, Turkey |
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| Abstract: | We report on the photophysical properties and photovoltaic performance of a polythiophene derivative, poly-2,3-bis(4-tert-butylphenyl)-5,8-bis(4-hexylthiophen-2-yl)quinoxaline (PHTQ) as an electron donor in bulk heterojunction solar cells blended with the acceptor 1-(3-methoxycarbonyl)propyl-1-phenyl-[6,6]-methanofullerene (PCBM). Devices were composed of PHTQ and varying amounts of PCBM (1:1, 1:2, 1:3, 1:4 w-w ratio). The components were spin cast from ortho-dichlorobenzene (ODCB) and characterized by measuring current–voltage characteristics under simulated AM 1.5 conditions. Efficiencies up to 0.3% have been reached. Incident photon to current efficiency (IPCE) is reported and the nanoscale morphology was investigated with atomic force microscopy (AFM). Photoinduced absorption spectroscopy confirms the photoinduced charge transfer in such donor acceptor blends. |
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| Keywords: | Organic solar cells Conjugated polymers Electrochromic polymers Bulk heterojunction solar cells Novel thiophene derivative |
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