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Low‐temperature flexible Ti/TiO~2~ photoanode for dye‐sensitized solar cells with binder‐free TiO~2~ paste by Lu-Yin Lin; Chuan-Pei Lee; Keng-Wei Tsai; Min-Hsin Yeh; Chia-Yuan Chen; R. Vittal; Chun-Guey Wu; Kuo-Chuan Ho is a Engineering article available to read on EtoBox.
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## ABSTRACT An energy‐economical dye‐sensitized solar cell (DSSC) with highly flexible Ti/TiO~2~ photoanode was developed through a low‐temperature process, using a binder‐free TiO~2~ paste. Ti foils, coated with the binder‐free TiO~2~ films were annealed at various temperature. Scanning electron microscopic (SEM) images of the films show uniform, mesoporous and crack‐free surface morphologies as well as interpenetrated TiO~2~ network. DSSCs with binder‐free TiO~2~ films annealed at 450, 350, 250 and 120°C show solar‐to‐electricity conversion efficiencies (__η__) of 4.33, 4.34, 3.72 and 3.40%, respectively, which are comparable to the efficiency of 4.56% obtained by using a paste with binder and annealing it at 450°C; this observation demonstrates the benefits of a binder‐free TiO~2~ paste for the fabrication of energy‐fugal DSSCs. On the other hand, when organic binder was used in the TiO~2~ paste for film preparation, a drastic deterioration in the cell performance with decreasing annealing temperature is noticed. Laser‐induced photo‐voltage transient technique is used to estimate the electron lifetime in various Ti/TiO~2~ films. Electrochemical impedance spectroscopic (EIS) anal
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- Author
- Lu-Yin Lin; Chuan-Pei Lee; Keng-Wei Tsai; Min-Hsin Yeh; Chia-Yuan Chen; R. Vittal; Chun-Guey Wu; Kuo-Chuan Ho
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1062-7995)
- Published
- 2011
- Language
- EN
- Field
- Engineering (Physical Sciences)