화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.107, 383-390, March, 2022
DOI10.1016/j.jiec.2021.12.009  Export Citation
Composite electrolyte pastes for preparing sub-module dye sensitized solar cells
Shanmuganathan Venkatesan1, Yun-Yu Chen1, Chung-Yu Chien1, Ming-Hsiang Tsai1, Hsisheng Teng1, and Yuh-Lang Lee1, 2, †
  • 1Department of Chemical Engineering, National Cheng Kung University, No. 1 University Road, Tainan 70101, Taiwan
  • 2Hierarchical Green-Energy Materials (Hi-GEM) Research Center, National Cheng Kung University, Tainan 70101, Taiwan
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In this study, high-efficiency sub-module quasi-solid-state (QS) dye-sensitized solar cells (DSSCs) are prepared using silicon dioxide (SiO2) nanofiller and polyethylene oxide (PEO)-based iodide composite electrolyte pastes. The influence of various amounts of nanofiller on the ionic conductivity, ion diffusion coefficient, and the performance of the devices are explored. The addition of SiO2 decreases the ion transport properties in the plain polymer electrolyte pastes. X-ray photoelectron spectroscopy analysis confirms the adsorption of polyiodide and lithium ions on the surface of the SiO2. This effect causes a reduction in the concentration of ions near the photoelectrode. As a result, the QS-DSSCs using 1 wt.% SiO2 nanofillers have higher recombination resistance and a longer electron lifetime than the other DSSCs. Therefore, high open-circuit voltage (0.794 V) and high efficiency (8.83%) are obtained for the corresponding QS-DSSCs. This efficiency is much better than the efficiencies of the devices employing the pristine polymer electrolyte paste and liquid electrolytes. This composite electrolyte paste is employed to prepare QS-sub-module cells. The four strip and rectangular-shaped module cells have high efficiencies of 4.71% and 4.81%, respectively. QS-DSSCs using 1 wt.% SiO2 nanofillers show high stability at both room temperature and 60 °C.
Keywords:Dye-sensitized solar cell;Polyethylene oxide;Silicon dioxide;Composite electrolyte paste;Sub-module cells
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