Novel Post-Treatment Process by La3+ Modification to TiO2 Photoanode with Enhanced Performance for DSSCs

Qian Qian Gao; Song Wang Yang; Lei Lei

doi:10.4028/www.scientific.net/AMR.860-863.219

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 860-863Novel Post-Treatment Process by La3+ Modification...

Novel Post-Treatment Process by La³⁺ Modification to TiO₂ Photoanode with Enhanced Performance for DSSCs

Abstract:

Photoanodes are critical parts of dye-sensitized solar cells (DSSCs), which are composited of TCO (transparent conductive oxide) glasses and nanocrystalline semiconductor film deposited on them. Post-treatment of porous TiO₂ film after sintering for the first time was important for the enhancement of the performance of DSSCs. A novel method to modify the surface of TiO₂ film was investigated in our work. Photoanodes of DSSCs were treated with the isopropanol solution containing 0.05mol/L La (NO₃)₃. After the post-treatment, there was an obvious increase of the overall performance of DSSCs. The photoelectric conversion efficiency (PCE) reached 9.33%, with a raise of 3.3%, compared with the traditional TiCl₄ thermal treating method at 70°C for 40min.

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Periodical:

Advanced Materials Research (Volumes 860-863)

Pages:

219-222

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.860-863.219

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Online since:

December 2013

Authors:

Qian Qian Gao, Song Wang Yang*, Lei Lei

Keywords:

La (NO₃)₃, La³⁺ Modifying, Photoanode, Post-Treatment Process

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