A highly efficient electric additive for enhancing photovoltaic performance of dye-sensitized solar cells |
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Authors: | Zhang Lan JiHuai Wu JianMing Lin MiaoLiang Huang |
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Institution: | 1. Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education; Key Laboratory of Functional Materials for Fujian Higher Education, Institute of Materials Physical Chemistry, Huaqiao University, Quanzhou, 362021, China
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Abstract: | N-cetylpyridinium iodide (N-CPI) as a new electric additive for enhancing photovoltaic performance of the dye-sensitized solar cell (DSSC) was studied. It showed high efficiency for enhancing both the open-circuit voltage and the short-circuit current density of DSSC when the suitable amount of N-CPI as 0.02 M was added in liquid electrolyte. The energy conversion efficiency of DSSC increased from 4.429% to 6.535%, with 47.55% enhancement. Therefore, it is a highly efficient electric additive for DSSC. The intrinsic reason is owing to the special molecular structure of N-CPI, which contains two different polarity groups. As a surfactant, N-CPI could form ordered arrangement in liquid electrolyte, which affects the diffusing ability and the redox reaction of I?/I 3 ? , and further affects the photovoltaic performance of DSSC. |
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