|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Phase Stability, Phase Transformations, and Reactive Phase Formation in Electronic Materials XVI
||Analysis of Electrochemical Impedance Spectroscopy of Dye-sensitized Solar Cells with a Blocking Layer
||Yen-Chiao Chen, Chih-Ming Chen
|On-Site Speaker (Planned)
The photovoltaic performance of dye-sensitized solar cells (DSSCs) is limited by the recombination reaction of the electrons from the fluorine-doped tin oxide (FTO) substrate back into the electrolyte. In order to reduce the electron recombination at the FTO/electrolyte interface, a blocking layer which can prevent the electrolyte from direct contact with the FTO substrate is deposited on the FTO to improve the cell performance. Based on the analysis results of transmission line model and electrochemical impedance spectroscopy (EIS), the blocking layer can promote the cell power conversion efficiency (PCE) by increasing the electron recombination resistance. The suppression effect of the blocking layer on the electron recombination under different light intensity was investigated. The suppression effect became stronger under low-light condition, indicating that the blocking layer played a more important role in the indoor or low-level outdoor lighting applications.
||Planned: Supplemental Proceedings volume