Improved dye-sensitized solar cells by composite ionic liquid electrolyte incorporating layered titanium phosphate

Journal Article · Sat May 15 00:00:00 EDT 2010 · Solar Energy

DOI:https://doi.org/10.1016/J.SOLENER.2010.02.011· OSTI ID:21318386

Cheng, Ping; Lan, Tian; Wang, Wanjun; Wu, Haixia; Yang, Haijun; Guo, Shouwu ^[1]; Deng, Changsheng; Dai, Xiaming ^[2]

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1. National Key Laboratory of Nano/Micro Fabrication Technology, Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240 (China)
2. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084 (China)

We reported a composite electrolyte prepared by incorporating layered {alpha}-titanium phosphate ({alpha}-TiP) into a binary ionic liquid of 1-propyl-3-methylimidazolium iodide (PMII) and 1-ethyl-3-methylimidazolium tetrafluoroborate (EmimBF{sub 4}) (volume ratio, 13:7) electrolyte. The addition of {alpha}-TiP markedly improved the photovoltaic properties of dye-sensitized solar cells (DSSCs) compared to that without {alpha}-TiP. The enhancement was explained by improved diffusion of tri-iodide (I{sub 3}{sup -}) ions, suppressed electron recombination with I{sub 3}{sup -} in the electrolyte and increased lifetime of electrons in mesoscopic TiO{sub 2} film. (author)

• OSTI ID: 21318386
• Journal Information: Solar Energy, Vol. 84, Issue 5; Other Information: Elsevier Ltd. All rights reserved; ISSN 0038-092X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
SOLAR CELLS
TITANIUM PHOSPHATES
TITANIUM OXIDES
TITANIUM-ALPHA
FLUOROBORATES
LIQUIDS
ELECTRONS
ELECTROLYTES
PHOTOVOLTAIC EFFECT
DYES
IODINE IONS
DIFFUSION
FILMS
LIFETIME
PERFORMANCE
RECOMBINATION
ORGANIC IODINE COMPOUNDS
Composite ionic liquid electrolytes