Photovoltaic and photophysical properties of a novel bis-3-hexylthiophelle substituted quinoxaline derivative

GÜNEŞ, Serap
Baran, Derya
Günbaş, Emrullah Görkem
Oezyurt, Funda
Fuchsbauer, Anita
Sariciftci, Niyazi Serdar
Toppare, Levent Kamil
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-met hoxycarbonyl)propyl-1-phenyl-[6,6]-methanofullerence (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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We present the feasibility of integrating substoichiometric molybdenum oxide (MoOx) as hole-selective rear contact into the production sequence of industrial scale p-type crystalline silicon (c-Si) solar cells. Thin films of MoOx are deposited directly on p-type c-Si by thermal evaporation at room temperature. It is found that Ag/MoOx/p-type c-Si rear contact structure exhibits low contact resistivity and modest surface recombination current density. The attained peak efficiency (eta) of the fabricated sola...
Citation Formats
S. GÜNEŞ et al., “Photovoltaic and photophysical properties of a novel bis-3-hexylthiophelle substituted quinoxaline derivative,” SOLAR ENERGY MATERIALS AND SOLAR CELLS, pp. 1162–1169, 2008, Accessed: 00, 2020. [Online]. Available: