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World Scientific Publishing, NANO, 05(09), p. 1440008, 2014

DOI: 10.1142/s1793292014400086

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INVESTIGATION OF DYE-REGENERATION KINETICS AT DYE-SENSITIZED P-TYPECuCrO2FILM/Electrolytes INTERFACE WITH SCANNING ELECTROCHEMICAL MICROSCOPY

Journal article published in 2014 by Getachew Alemu, Bingyan Zhang, Junpeng Li, Xiaobao Xu, Jin Cui, Yan Shen, Mingkui Wang ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The power conversion efficiency of p-type dye-sensitized solar cells (DSSC) is determined by the kinetics of hole injection and dye-regeneration reaction at the dye/electrolyte interface. In this work, the photochemical regeneration kinetics of dye adsorbed on CuCrO 2 mesoporous film was investigated by using scanning electrochemical microscopy with feedback mode. Organic P1 and C343 sensitizers in combination with iodide-based and thiolate-based electrolytes were selected to understand the effect of sensitizers and redox shuttles on dye-regeneration process. A fast regeneration kinetic rate constant was confirmed in thiolate-based sample compared with iodide-based electrolyte, indicating that the organic redox shuttle was an efficient mediator to optimize the performance of p-type DSSC.