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Effects of TiO 2 Film on the Performance of Dye‐sensitized Solar Cells Based on Ionic Liquid Electrolyte
Author(s) -
Pan Xu,
Dai SongYuan,
Wang KongJia,
Hu LinHua,
Shi ChengWu,
Guo Li,
Kong FanTai
Publication year - 2005
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200591579
Subject(s) - nanocrystalline material , dye sensitized solar cell , chemistry , particle size , dielectric spectroscopy , particle size distribution , electrolyte , crystallite , particle (ecology) , spectroscopy , porosity , analytical chemistry (journal) , chemical engineering , electrochemistry , crystallography , chromatography , electrode , organic chemistry , oceanography , physics , quantum mechanics , engineering , geology
Photo correlation spectroscopy was used to measure the particle size distribution of TiO 2 films. Other parameters, such as porosity, BET surface area, average pore size, crystallite size D 101 , distribution of pore size etc. were also measured. The effects of these parameters on the ionic liquid based dye‐sensitized solar cells (DSC) were studied. It was concluded that the particle size distribution of nanocrystalline TiO 2 played an important role on the performance of DSC. The narrow particle size distribution of nanocrystalline TiO 2 increased the efficiency of DSC, while the wide distribution decreased the efficiency of DSC. From the result above, it was also concluded that the photo correlation spectroscopy was a good method to identify the performance of TiO 2 films. Based on electrochemical impedance spectroscopy, we found that the particle size distribution could affect the electronic contact between the TiO 2 layers as well. The narrow particle size distribution made the electronic contact between TiO 2 layers better than the wide particle size distribution of the TiO 2 films, and then better the electronic contact, higher the efficiency of the DSC.