Dye-Sensitized Solar Cells Employing a Multifunctionalized Hierarchical SnO2 Nanoflower Structure Passivated by TiO2 Nanogranulum
Dye-Sensitized Solar Cells Employing a Multifunctionalized Hierarchical SnO2 Nanoflower Structure Passivated by TiO2 Nanogranulum
复制标题
采用 TiO2 纳米颗粒钝化的多功能分级 SnO2 纳米花结构的染料敏化太阳能电池
DOI：
10.1021/jp409203w
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发表时间：
2014-02-20
影响因子：
3.7
通讯作者：
Xu, Jinzhang
中科院分区：
文献类型：
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作者：
Niu, Haihong;Zhang, Shouwei;Xu, Jinzhang
我们研究了一种由一层二氧化钛纳米颗粒钝化的简单、多功能的层次化SnO2纳米花光电极。具有细纳米棒和纳米片的层次化SnO2纳米花具有独特的形貌，可以提供良好的电子传输性能，从而显著减少了电荷扩散路径，并在FTO衬底上快速收集。钝化的光阳极不仅改善了染料在光电极中的分布，减少了SnO2光电极的表面缺陷以适应更多的染料，而且通过引入势垒层抑制了电荷复合，延长了电子寿命。用X射线衍射仪(X射线衍射仪)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)研究了样品的微观结构。用比表面积(SBET)和孔径分布测试了样品的比表面积。根据UV-Vis计算染料的量。界面电荷转移过程。
We investigated a facile multifunctionalized hierarchical SnO2 nanoflower photoelectrode passivated by a layer of TiO2 nanogranulum. The hierarchical SnO2 nanoflower with thin nanorod and nanosheet has a unique morphology that can afford excellent electron transport properties—orientation overall, which results in a significant diminution in the charge diffusion route and a rapid collection in FTO substrate. The passivated photoanode not only improved the distribution of dyes in the photoelectrode and reduced the surface defects of SnO2 photoelectrode to accommodate more dyes, but also suppressed the charge recombination and prolonged electron lifetime by introducing a barrier layer. The microstructure of the sample was investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The surface areas (SBET) and pore size distribution were detected on BET measurement. The amounts of dye were calculated from UV–vis. The interfacial charge transfer proc...