Department of Physics and the William Mong Institute of Nano Science and Technology, the Hong Kong University of Science and Technology, Hong Kong, China.
Phys Chem Chem Phys. 2011 Jun 14;13(22):10631-4. doi: 10.1039/c1cp21068h. Epub 2011 May 10.
We report a direct precipitation method for mass production of ZnO microflowers (MFs) containing hierarchical structures. The ZnO MFs are constructed by interlaced single crystalline and porous nanosheets which are ideal photoanode material for dye-sensitized solar cells (DSCs) because the MFs can largely improve the energy harvesting performance and the efficiency of DSCs. Compared with other forms of nano-sized structures, the novel hierarchical structures show obvious advantages in DSC application because of their large surface area for dye-loading, good light scattering efficiency and excellent electrical transport property. The quasi-solid state DSCs fabricated with the MF hierarchical structures exhibited an efficiency of 4.12%, much higher than that of ZnO nanoparticle-based DSCs, indicating a great potential for the development of highly-efficient quasi-solid DSCs.
我们报告了一种用于大规模生产含有分级结构的 ZnO 微花（MFs）的直接沉淀法。这些 ZnO MFs 由交错的单晶和多孔纳米片构成，是染料敏化太阳能电池（DSCs）的理想光阳极材料，因为 MFs 可以大大提高能量收集性能和 DSCs 的效率。与其他形式的纳米结构相比，新型分级结构在 DSC 应用中具有明显的优势，因为它们具有较大的染料负载表面积、良好的光散射效率和优异的电输运性能。用 MF 分级结构制备的准固态 DSCs 的效率为 4.12%，远高于基于 ZnO 纳米颗粒的 DSCs，这表明高效准固态 DSCs 的发展潜力巨大。
