Photovoltaic and photophysical properties of a novel bis-3-hexylthiophene substituted quinoxaline derivative
- 作者：Serap Gü ; nes ; Derya Baran ; Gö ; rkem Gü ; nbas ; Funda Ö ; zyurt ; Anita Fuchsbauer ; Niyazi Serdar Sariciftci ; Levent Toppare
- 关键词：Organic solar cells ; Conjugated polymers ; Electrochromic polymers ; Bulk heterojunction solar cells ; Novel thiophene derivative
- 刊名：Solar Energy Materials and Solar Cells
- 出版年：2008
- 期刊代码：81_09270248
- 类别：ce
- 出版时间：September 2008
- 卷：92
- 期：9
- 页码：1162-1169
- 文件大小：1025 K
摘要
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.