Suppression of Charge Recombination Rate in Nanocrystalline SnO2 by Thin Coatings of Divalent Oxides in Dye-Sensitized Solar Cells

Bulletin of the Korean chemical society

Weekyung Kang¹  Doh Kwon Lee¹  Chaehyeon Lee¹  Min Jae Ko¹  Kyoungkon Kim¹  Nam Gyu Park¹  Gi Won Lee¹ 

关键词: Core-shell;    Surface coating;    Dye-sensitized solar cell;    Charge recombination;    Nanocrystalline SnO2;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The core-shell SnO2@AO (A = Ni, Cu, Zn and Mg) films were prepared and the effects of coatings on photovoltaic properties were investigated. Studies on X-ray photoelectron spectroscopy, energy dispersive X-ray analysis and transmission electron microscopy showed the formation of divalent oxides on the surface of SnO2 nanoparticles. It was commonly observed that all the dye-sensitized core-shell films exhibited higher photovoltage than the bare SnO2 film. Transient photovoltage measurements confirmed that the improved photovoltages were related to the decreased time constants for electron recombination.

【 授权许可】

Unknown