Fabrication of TiO2 nanotube-nanocube array composite electrode for dye-sensitized solar cells

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题名:	Fabrication of TiO2 nanotube-nanocube array composite electrode for dye-sensitized solar cells
作者:	李文仁;Ho, Shih-Yu;Su, Chaochin;Kathirvel, Sasipriya;Li, Chung-Yen;Li, Wen-Ren
贡献者:	理學院化學學系
关键词:	Anodization;Applied sciences;Arrays;Cross-disciplinary physics: materials science;rheology;DSSCs;Dye adsorption;Dyes;Electron transport;Energy;Exact sciences and technology;Materials science;Methods of nanofabrication;Mixed morphology;Nanocomposites;Nanomaterials;Nanoscale materials and structures: fabrication and characterization;Nanostructure;Nanotubes;Natural energy;Other topics in nanoscale materials and structures;Photovoltaic cells;Photovoltaic conversion;Physics;Solar cells;Solar cells. Photoelectrochemical cells;Solar energy;TiO2 nanocube;TiO2 nanotube arrays;Titanium dioxide
日期:	2013-02-01
上传时间:	2026-04-21 14:06:29 (UTC+8)
出版者:	Elsevier;Amsterdam: Elsevier B.V
摘要:	摘要： One dimensional TiO2 nanotube structure recently plays an important role in the application of dye sensitized solar cells (DSSCs) due to its faster electron transport. The fabrication of photoanode using the TiO2 nanotube structures mixed with the TiO2 nanoparticles was investigated to enhance the photovoltaic efficiency of DSSCs by increasing the surface area of electrode. In this work, self-organized and vertically-oriented TiO2 nanotube arrays (TNAs) covered with uniformly distributed TiO2 nanocubes (TNCs) were fabricated in a simple one-step anodization process. The X-ray diffraction patterns reveal that both TNAs and TNCs are in anatase phase. The scanning electron microscopy analysis demonstrates that the wall thickness and inner diameter of hexagonal close-packed TiO2 nanotubes from chemically polished Ti foils are 10–15 and 100–120nm, respectively, and the particle size of TNCs is 60–75nm. The DSSC fabricated by the mixed morphological TNAs with TNCs shows an enhanced photoconversion efficiency of ~63% than that of TNAs alone, due to the increase of both dye adsorption and electron transportation rate. ► Fabrication of TiO2 nanotube arrays on Ti foils was performed using anodization process. ► Nitrogen blow influences the growth of TiO2 nanocube particles on the TiO2 nanotube arrays. ► Mixed morphological nanotube–nanocube TiO2 photoanode in dye-sensitized solar cell achieved improved efficiency of 1.98%. 出版者： Amsterdam: Elsevier B.V 出版日期： 2013-02-01 出處： Thin Solid Films, 2013-02, Vol.529, p.123-127 版權： 2012 Elsevier B.V. 版權： 2014 INIST-CNRS 識別號： ISSN: 0040-6090 識別號： EISSN: 1879-2731 識別號： DOI: 10.1016/j.tsf.2012.07.081 識別號： CODEN: THSFAP
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