標題: Coverage Analysis for the Core/Shell Electrode of Dye-Sensitized Solar Cells
作者: Tien, Ta-Chang
Pan, Fu-Ming
Wang, Lih-Ping
Tsai, Feng-Yu
Lin, Ching
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 3-六月-2010
摘要: In this study, we established a core/shell (C/S) model that evaluates the surface coverage of an overlayer deposited on nanoparticles in terms of X-ray photoelectron spectroscopy signals of the nanoparticles. We used the model to estimate the coverage of Al(2)O(3) shell layers, which were deposited on the nanoporous TiO(2) electrodes of dye-sensitized solar cells (DSSCs) by atomic layer deposition (ALD), as a function of the number of ALD reaction cycles. The surface coverage increased with the average thickness of the Al(2)O(3) shell layers, indicating that the ALD Al(2)O(3) deposition on the nanoporous electrode was via the island growth mode. The power conversion efficiency of the DSSCs was highest after the first ALD reaction cycle for the Al(2)O(3) shell layers, which had a coverage of 0.25, according to the C/S model. The study shows that, to further improve the PCE, optimization of the ALD Al(2)O(3) deposition condition is required so that the surface coverage of the shell layer can be increased at the first ALD reaction cycle.
URI: http://dx.doi.org/10.1021/jp1023229
http://hdl.handle.net/11536/5278
ISSN: 1932-7447
DOI: 10.1021/jp1023229
期刊: JOURNAL OF PHYSICAL CHEMISTRY C
Volume: 114
Issue: 21
起始頁: 10048
結束頁: 10053
顯示於類別:期刊論文


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