An avenue of sealing liquid electrolyte in flexible dye-sensitized solar cells

作者：Duan Yanyan; Tang Qunwei^*; Li Ru; He Benlin; Yu Liangmin

来源：Journal of Power Sources, 2015, 274: 304-309.

DOI：10.1016/j.jpowsour.2014.10.068

• Flexible dye-sensitized solar cell
• Liquid electrolyte storage
• Transparent counter electrode
• Cobalt selenide alloy

Storage of liquid electrolyte has been a persistent objective for liquid-state flexible dye-sensitized solar cells (DSSCs). We present here the feasibility of rear-irradiated flexible DSSC comprising of groove stored dye-sensitized TiO2 on a Ti foil and conductive plastic supported transparent cobalt selenide alloy counter electrode. After being injected into the groove, the liquid electrolyte containing I-/I-3(-) redox couples can be well sealed. The flexible cells are optimized by adjusting groove depth and stoichiometry of cobalt selenide electrodes, generating a maximum power conversion efficiency of 7.52% under one sun irradiation. The research demonstrates some new insights on how to improve liquid electrolyte retention and elevate photovoltaic performances of flexible DSSCs.

• 出版日期2015-1-15
• 单位中国海洋大学