New organic photosensitizers incorporating carbazole and dimethylarylamine moieties for dye-sensitized solar cells

Mao Liang, Zhong-Yuan Wang, Lu Zhang, Hong-Yu Han, Zhe Sun and Song Xue

Renewable Energy, 2011, vol. 36, issue 10, 2711-2716

Abstract: Four organic dyes (XS10–13) employing carbazole unit as electron donor and N,N-dimethylarylamine moieties as electron-donating groups were designed and synthesized for nanocrystalline TiO2 dye-sensitized solar cells. The electron-donating groups of dimethylarylamine increase the electron density of donor moiety and enhance the molar extinction coefficient of dyes. For a typical device the maximum IPCE value could reach 86%, with a short-circuit photocurrent density (Jsc) of 9.8mAcm−2, an open-circuit photovoltage (Voc) of 642mV, and fill factor (FF) of 0.63, which corresponds to an overall conversion efficiency (η) of 4.0%. For a comparison, the N719-sensitized TiO2 solar cell showed an efficiency of 6.4%.

Keywords: Dye-sensitized solar cell; Photovoltaic; Organic sensitizer; Carbazole; Dimethylarylamine (search for similar items in EconPapers)
Date: 2011
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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:36:y:2011:i:10:p:2711-2716

DOI: 10.1016/j.renene.2011.03.003

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