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

GÜNEŞ S., Baran D., Guenbas G., Oezyurt F., Fuchsbauer A., Sariciftci N. S., ...More

SOLAR ENERGY MATERIALS AND SOLAR CELLS, vol.92, no.9, pp.1162-1169, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 92 Issue: 9
  • Publication Date: 2008
  • Doi Number: 10.1016/j.solmat.2008.04.004
  • Journal Name: SOLAR ENERGY MATERIALS AND SOLAR CELLS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1162-1169
  • Keywords: organic solar cells, conjugated polymers, electrochromic polymers, bulk heterojunction solar cells, novel thiophene derivative, POLYMER SOLAR-CELLS, BAND-GAP POLYMER, LARGE-AREA, MORPHOLOGY, BENZOTHIADIAZOLE, PERFORMANCE, THIOPHENE, ELECTRON, DEVICES
  • Middle East Technical University Affiliated: Yes

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-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. (c) 2008 Elsevier B.V. All rights reserved.