The effect of TiO₂-coating layer on the performance in nanoporous ZnO-based dye-sensitized solar cells

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• 作者：Chohui Kim ; Jongmin Kim ; Hongsik Choi ; Changwoo Nahm ; Suji Kang ; Sungjun Lee ; Byungho Lee ; Byungwoo Park ; ^{byungwoo@snu.ac.kr}
• 关键词：Dye-sensitized solar cells ; Zinc oxide electrode ; Titanium dioxide coating ; Zinc&ndash ; dye complex
• 刊名：Journal of Power Sources
• 出版年：2013
• 出版时间：15 June, 2013
• 年：2013
• 卷：232
• 期：Complete
• 页码：159-164
• 全文大小：1352 K

文摘

Polydisperse ZnO spheres consisting of ¡«43-nm-sized nanoparticles are facilely synthesized for dye-sensitized solar cells. A uniform TiO₂-coating layer on the ZnO surface improves both the open-circuit voltage and short-circuit current, and the power-conversion efficiency is consequently enhanced by a factor of approximately three. A thin coating layer suppresses the formation of Zn²⁺/dye complexes due to the enhanced chemical stability against the acidic dye, and also reduces charge recombination at the ZnO/dye/electrolyte interface.