A facile route to fabricate an anodic TiO2 nanotube-nanoparticle hybrid structure for high efficiency dye-sensitized solar cells
A facile route to fabricate an anodic TiO2 nanotube-nanoparticle hybrid structure for high efficiency dye-sensitized solar cells
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DOI：
10.1039/c2nr31268a
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发表时间：
2012-01-01
期刊：
影响因子：
6.7
通讯作者：
Huang, Haitao
中科院分区：
文献类型：
--
作者：
Lin, Jia;Liu, Xiaolin;Huang, Haitao
阳极氧化的TiO2纳米管阵列（TNA）相对较低的内表面积限制了基于TNA的染料敏化太阳能电池（DSSC）中的染料吸附和光捕获。在这里，在室温下的阳极化TNA的水处理被用来以可控的方式定制TNA壁的几何形状，从而导致混合管壁结构，其具有管状形态的外壳和由小颗粒组成的内表面。为了实现DSSC中的正面照明，通过自分离和转移技术将具有多孔内壁的TNA转移到透明导电氧化物基底上。粗糙的水处理的TNA显示出显着增强的内表面积，从而提高染料负载和捕光能力。在水处理2天后实现了优化的性能，功率转换效率为6.06%，与常规TNA相比提高了约33%。此外，杂化TNA纳米结构提供了优异的电子转移和复合特性，因此有望用于高效DSSC。
The relatively low internal surface area of anodized TiO2 nanotube arrays (TNAs) limits dye adsorption and light capturing in TNA-based dye-sensitized solar cells (DSSCs). Here, water treatment of as-anodized TNAs at room temperature was used to tailor the geometry of TNA walls in a controllable way, leading to a hybrid tube wall structure with the outer shell in a tubular morphology and the inner surface consisting of small particles. To enable front-side illumination in DSSCs, the TNAs with porous inner walls were transferred to transparent conductive oxide substrates by a self-detaching and transfer technique. The roughened water-treated TNAs show significantly enhanced internal surface area, leading to improved dye-loading and light-harvesting capabilities. Optimized performance was achieved after water treatment for 2 days, with a power conversion efficiency of 6.06%, increased by similar to 33% compared to conventional TNAs. Furthermore, the hybrid TNA nanostructure provides excellent electron transfer and recombination characteristics, thus promising for high efficiency DSSCs.