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Journal of Materials Science
Erschienen in: Journal of Materials Science 17/2016

31.05.2016 | Original Paper

Spirobifluorene-cored small molecules containing four diketopyrrolopyrrole arms for solution-processed organic solar cells

verfasst von: Dongfeng Dang, Pei Zhou, Ying Zhi, Xichang Bao, Renqiang Yang, Lingjie Meng, Weiguo Zhu

Erschienen in: Journal of Materials Science | Ausgabe 17/2016

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Abstract

Spirobifluorene-linked three-dimensional small molecules of SF(DPP)4 and SF(TDPP)4 containing four diketopyrrolopyrrole arms were designed and synthesized. Both molecules displayed a broad and strong absorption in the region of 300–700 nm with suitable HOMO and LUMO energy levels as well as high charge carrier mobility. Meanwhile, solution-processed organic solar cells with a device structure of ITO/PEDOT:PSS/active layer/Ca/Al was also fabricated to investigate the photovoltaic properties of SF(DPP)4 and SF(TDPP)4. In contrast to that of star-shaped TPA(DPP)3 in solar cells, enhanced photovoltaic performance with an impressive open circuit voltage of 0.95 V and short-circuit current density of 9.12 mA/cm2 was achieved, leading to the maximum power conversion efficiency of 3.72 %. Our result here demonstrated that the three-dimensional-type small molecule in a D–A framework is a promising candidate as electron-donor materials for efficient organic solar cells.
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Metadaten
Titel
Spirobifluorene-cored small molecules containing four diketopyrrolopyrrole arms for solution-processed organic solar cells
verfasst von
Dongfeng Dang
Pei Zhou
Ying Zhi
Xichang Bao
Renqiang Yang
Lingjie Meng
Weiguo Zhu
Publikationsdatum
31.05.2016
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 17/2016
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-016-0070-x

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