TY - JOUR
T1 - Extension lifetime for dye-sensitized solar cells through multiple dye adsorption/desorption process
AU - Chiang, Yi Fang
AU - Chen, Ruei Tang
AU - Shen, Po Shen
AU - Chen, Peter
AU - Guo, Tzung Fang
N1 - Funding Information:
The authors would like to thank the National Science Council (NSC) of Taiwan ( NSC 100-2622-E-006-014-CC2, NSC 99-2113-M-006-009-MY2 ), and the Asian Office of Aerospace Research and Development (AOARD) ( AOARD-10-4054 ) for financially supporting this research. We thank the ETERNAL CHEMICAL CO., LTD. for supplying us the nanocrystalline TiO 2 paste.
PY - 2013/3/1
Y1 - 2013/3/1
N2 - In this study, we propose a novel concept of extending the lifetime of dye-sensitized solar cells (DSCs) and reducing the costs of re-conditioning DSCs by recycling the FTO/TiO2 substrates. The photovoltaic performances of DSCs using substrates with various cycles of dye uptake and rinse off history are tested. The results show that dye adsorption and Voc are significantly increased under multiple dye adsorption/desorption process and resulted in the improvement of power conversion efficiency. Moreover, the dyeing kinetics is faster after multiple recycling processes, which is favorable for the industrial application. With surface analysis and charge transport characteristics, we also demonstrate the optimal functionality of TiO 2/dye interface for the improved Voc and efficiency. The results confirm that the improved performances are due to increased dye loading and dense packing of dye molecules. Our results are beneficial for the understanding on the extension of DSCs lifetime after long-term operation in the application of DSC modules. This approach may also be applied in the replacement of newly synthesized photosensitizes to the active cells.
AB - In this study, we propose a novel concept of extending the lifetime of dye-sensitized solar cells (DSCs) and reducing the costs of re-conditioning DSCs by recycling the FTO/TiO2 substrates. The photovoltaic performances of DSCs using substrates with various cycles of dye uptake and rinse off history are tested. The results show that dye adsorption and Voc are significantly increased under multiple dye adsorption/desorption process and resulted in the improvement of power conversion efficiency. Moreover, the dyeing kinetics is faster after multiple recycling processes, which is favorable for the industrial application. With surface analysis and charge transport characteristics, we also demonstrate the optimal functionality of TiO 2/dye interface for the improved Voc and efficiency. The results confirm that the improved performances are due to increased dye loading and dense packing of dye molecules. Our results are beneficial for the understanding on the extension of DSCs lifetime after long-term operation in the application of DSC modules. This approach may also be applied in the replacement of newly synthesized photosensitizes to the active cells.
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U2 - 10.1016/j.jpowsour.2012.10.052
DO - 10.1016/j.jpowsour.2012.10.052
M3 - Article
AN - SCOPUS:84868558164
VL - 225
SP - 257
EP - 262
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
ER -
