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Synthesis and Applications of Dicationic Iodide Materials for Dye-Sensitized Solar Cells

Nam, Heejin;Ko, Yohan;Kunnan, Sakeerali C.;Choi, Nam-Soon;Jun, Yongseok

  • Received : 2018.12.13
  • Accepted : 2018.12.28
  • Published : 2019.06.30

Abstract

Dye-sensitized solar cells (DSSCs) have been receiving growing attentions as a potential alternative to order photovoltaic devices due to their high efficiency and low manufacturing cost. DSSCs are composed of a photosensitizing dye adsorbed on a mesoporous film of nanocrystalline $TiO_2$ as a photoelectrode, an electrolyte containing triiodide/iodide redox couple, and a platinized counter electrode. To improve photovoltaic properties of DSSCs, new dicationic salts based on ionic liquids were synthesized. Quite comparable efficiencies were obtained from electrolytes with new dicationic iodide salts. The best cell performance of 7.96% was obtained with dicationic salt of PBDMIDI.

Keywords

Dye-Sensitized Solar Cells;Dicationic Salts

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Acknowledgement

Supported by : Korea Institute of Energy Technology Evaluation and Planning (KETEP), Korean Institute for Advancement of Technology, National Research Foundation (NRF)