Sensitizers containing donor cascade and rhodanine-3-acetic acid moieties for dye-sensitized solar cells |
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Authors: | Quan-Ping Wu Mao Liang Song Xue |
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Affiliation: | a Department of Thermal and Power Engineering, Tianjin University of Technology, Tianjin 300384, PR China b Department of Applied Chemistry, Tianjin University of Technology, Tianjin 300384, PR China |
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Abstract: | Three organic dyes with D-π-D-π-A structure based on triarylamine, dimethylarylamine, and rhodanine-3-acetic acid moieties are designed and synthesized. Incorporating thiophene moieties into the system affords sensitizers with high molar extinction coefficients. These dyes were applied into nanocrystalline TiO2 dye-sensitized solar cells through standard operations. For a typical device the maximal monochromatic incident photon-to-current conversion efficiency (IPCE) can reach 73%, with a short-circuit photocurrent density (Jsc) of 7.3 mA/cm2, an open-circuit voltage (Voc) of 636 mV, and a fill factor (ff) of 0.61, corresponding to an overall conversion efficiency (η) of 2.86%. |
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Keywords: | Dye-sensitized solar cell Photovoltaic Donor cascade Triarylamine Dimethylaryl amine |
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