摘要ZnO nanospheres are synthesized by a two-step self-assembly method. X-ray diffraction pattern and Raman scattering spectra measurements show that all the samples present a typical wurtzite structure. A regular sphere shape is inspected by field emission scanning electron microscope and transmission electron microscope for the samples. It is shown that the as-synthesized ZnO nanosphere is composed of numbers of primary particles with size of around 10nm. A possible growth mechanism for the two-step self-assembly ZnO nanosphere is proposed. After applying the ZnO nanospheres to dye-sensitized solar cells (DSSCs), a 117% increase of the overall light to electricity conversion efficiency η is observed compared with that of the ZnO nanoparticles based DSSCs. Associated with the UV-vis results, light scattering is assigned to the great improvement of η.
Abstract：ZnO nanospheres are synthesized by a two-step self-assembly method. X-ray diffraction pattern and Raman scattering spectra measurements show that all the samples present a typical wurtzite structure. A regular sphere shape is inspected by field emission scanning electron microscope and transmission electron microscope for the samples. It is shown that the as-synthesized ZnO nanosphere is composed of numbers of primary particles with size of around 10nm. A possible growth mechanism for the two-step self-assembly ZnO nanosphere is proposed. After applying the ZnO nanospheres to dye-sensitized solar cells (DSSCs), a 117% increase of the overall light to electricity conversion efficiency η is observed compared with that of the ZnO nanoparticles based DSSCs. Associated with the UV-vis results, light scattering is assigned to the great improvement of η.
(Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)
引用本文:
ZHANG Yong-Zhe;WU Li-Hui;LIU Yan-Ping;XIE Er-Qing; YAN De;CHEN Jiang-Tao. Preparation of ZnO Nanospheres and Their Applications in Dye-Sensitized Solar Cells[J]. 中国物理快报, 2009, 26(3): 38201-038201.
ZHANG Yong-Zhe, WU Li-Hui, LIU Yan-Ping, XIE Er-Qing, YAN De, CHEN Jiang-Tao. Preparation of ZnO Nanospheres and Their Applications in Dye-Sensitized Solar Cells. Chin. Phys. Lett., 2009, 26(3): 38201-038201.
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