Hydrothermal growth of perpendicularly oriented ZnO nanorod array film and its photoelectrochemical properties
Hydrothermal growth of perpendicularly oriented ZnO nanorod array film and its photoelectrochemical properties
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DOI：
10.1016/j.apsusc.2004.11.053
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发表时间：
2005-08
影响因子：
6.7
通讯作者：
Min Guo;P. Diao;S. Cai
中科院分区：
文献类型：
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作者：
Min Guo;P. Diao;S. Cai
采用低成本、低温水热的方法，在ZnO纳米粒子预修饰的ITO衬底上成功制备了高纵横比的排列良好的ZnO纳米棒。采用扫描电子显微镜（SEM）、x射线衍射仪（XRD）、透射电子显微镜（TEM）和拉曼光谱对ZnO纳米结构进行了表征。表征结果表明，纳米棒是高质量的单晶，沿[001]方向生长，生长2h时，90%的纳米棒直径在120-190nm之间。由取向可控的ZnO纳米棒组成的薄膜可以通过设计的路径更有效地传输和收集光生电子。对于三明治型电池，在碳酸丙烯酯电解质中加入0.3mol/L LiI和0.03mol/L i2，整体太阳能转换效率达到2.1%。
By using a low cost, low-temperature hydrothermal approach, well-aligned ZnO nanorods with high aspect ratio have been successfully prepared on ITO substrates that were pre-modified with ZnO nanoparticles. The obtained ZnO nanostructure was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), and Raman spectroscopy. The results of characterization indicate that the nanorods are high-quality single crystals, grow along [001] direction and for 2h growth time 90% of them have diameters of 120–190nm. The thin films consisting of ZnO nanorods with controlled orientation onto ITO substrates allow a more efficient transport and collection of photogenerated electrons through a designed path. For a sandwich-type cell, with 0.3mol/L LiI and 0.03mol/L I2in propylene carbonate electrolyte, the overall solar energy conversion efficiency reaches 2.1%.