Statistical TiO2/dye-mass dependence and dye-regeneration efficiency on dye-sensitized solar cells

• Published in: Nano energy Vol. 16; pp. 383 - 388
• Main Authors: Hwang, Kyung-Jun, Jeong, Yonkil, Choi, Chulmin, Kim, Young Jin, Kim, Gunwoo, Choi, Yong-Kook, Jin, Sungho, Park, Dong-Won
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.09.2015
• Subjects: Charge-transfer kinetics; Dye-mass; Dye-regeneration efficiency; Dye-sensitized solar cells; TiO2; Charge-transfer kinetics; Dye-mass; Dye-sensitized solar cells; Dye-regeneration efficiency; TiO2
• ISSN: 2211-2855
• DOI: 10.1016/j.nanoen.2015.07.016

Dye-sensitized solar cells (DSCs) were statistically investigated on TiO2 thickness and dye-mass dependence. The DSC devices exhibited a trend of performance saturation from an approximately 15μm TiO2 thickness with 10−7mol/cm2 dye-mass, which was estimated to be a maximum engineering condition required for effective charge-transfer kinetics in this investigation. The prominent factor for power conversion efficiency was increase of short-circuit current density by decrease of charge-transfer resistance with a heavy load of dye-mass. The dye-regeneration efficiency evaluated from a minimum electron density and a transferred counterpart ionic carrier density was approximately ranged between 1.5 and 3.0%. [Display omitted] •We investigated the DSCs performance according to dye-regeneration efficiency (G/T).•The G/T evaluated from a minimum electron density and an ionic carrier density.