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GETACHEW ALEMU,MINGKUI WANG,BINGYAN ZHANG,JUNPENG LI,XIAOBAO XU,JIN CUI,YAN SHEN 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2014 NANO Vol.9 No.5
The power conversion e±ciency of p-type dye-sensitized solar cells (DSSC) is determined by thekinetics of hole injection and dye-regeneration reaction at the dye/electrolyte interface. In thiswork, the photochemical regeneration kinetics of dye adsorbed on CuCrO 2 mesoporous ¯lm wasinvestigated by using scanning electrochemical microscopy with feedback mode. Organic P1 andC343 sensitizers in combination with iodide-based and thiolate-based electrolytes were selected tounderstand the e®ect of sensitizers and redox shuttles on dye-regeneration process. A fast re-generation kinetic rate constant was con¯rmed in thiolate-based sample compared with iodide-based electrolyte, indicating that the organic redox shuttle was an e±cient mediator to optimizethe performance of p-type DSSC.