Fabrication and properties of meso-macroporous electrodes screen-printed from mesoporous titania nanoparticles for dye-sensitized solar cells |
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| Authors: | Liang Ma Min Liu Tianyou Peng Ke Fan Lanlan Lu Ke Dai |
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| Affiliation: | aCollege of Chemistry and Molecular Science, Wuhan University, Wuhan 430072, PR China;bState Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, PR China |
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| Abstract: | A meso-macroporous TiO2 film electrode was fabricated by using mesoporous TiO2 (m-TiO2) nanoparticles through a screen-printing technique in order to efficiently control the main fabrication step of dye-sensitized solar cells (DSSCs). The qualities of the screen-printed m-TiO2 films were characterized by means of spectroscopy, electron microscopy, nitrogen adsorption–desorption and photoelectrochemical measurements. Under the optimal paste composition and printing conditions, the DSSC based on the meso-macroporous m-TiO2 film electrode exhibits an energy conversion efficiency of 4.14%, which is improved by 1.70% in comparison with DSSC made with commercially available nonporous TiO2 nanoparticles (P25, Degussa) electrode printed with a similar paste composition. The meso-macroporous structure within the m-TiO2 film is of great benefit to the dye adsorption, light absorption and the electrolyte transportation, and then to the improvement of the overall energy conversion efficiency of DSSC. |
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| Keywords: | Mesoporous TiO2 nanoparticle Dye-sensitized solar cell Screen-printing Energy conversion efficiency |
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