Chin. Phys. Lett.  2009, Vol. 26 Issue (3): 038201    DOI: 10.1088/0256-307X/26/3/038201
CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
Preparation of ZnO Nanospheres and Their Applications in Dye-Sensitized Solar Cells
ZHANG Yong-Zhe, WU Li-Hui, LIU Yan-Ping, XIE Er-Qing, YAN De, CHEN Jiang-Tao
Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000
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ZHANG Yong-Zhe, WU Li-Hui, LIU Yan-Ping et al  2009 Chin. Phys. Lett. 26 038201
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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.
Keywords: 82.47.Jk      84.60.Jt      61.46.+w      78.30.Fs      61.82.Rx     
Received: 04 November 2008      Published: 19 February 2009
PACS:  82.47.Jk (Photoelectrochemical cells, photoelectrochromic and other hybrid electrochemical energy storage devices)  
  84.60.Jt (Photoelectric conversion)  
  61.46.+w  
  78.30.Fs (III-V and II-VI semiconductors)  
  61.82.Rx (Nanocrystalline materials)  
  78.67.-n (Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/26/3/038201       OR      https://cpl.iphy.ac.cn/Y2009/V26/I3/038201
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ZHANG Yong-Zhe
WU Li-Hui
LIU Yan-Ping
XIE Er-Qing
YAN De
CHEN Jiang-Tao
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