期刊
SCIENCE OF ADVANCED MATERIALS
卷 6, 期 3, 页码 459-464出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/sam.2014.1738
关键词
Anatase TiO2; Dye-Sensitized Solar Cells; Microprisms; Nanoparticles; Electron Microscopy
资金
- National Research Foundation of Korea and Human Resource Development [20124030200080]
- Korea government Ministry of Knowledge Economy
- Research Funds of Chonbuk National University
- Korea Evaluation Institute of Industrial Technology (KEIT) [20124030200080] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Anatase TiO2 nanoparticles-assembled microprisms with high specific surface area (222.21 m(2)/g) were successfully fabricated via a simple refluxing method, based on hydrolysis of titanium glycolate precursor and water. The crystal phase, size, and properties of the TiO2 microprisms were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), Raman, and Brunauer-Emmett-Teller (BET) methods. It was proposed that water can slowly permeate into the prism-like titanium glycolate microstructures during refluxing, resulting in the formation of prism-like TiO2 microstructures by the assembling of nanoparticles. Dye-sensitized solar cells (DSSCs) fabricated with the prepared TiO2 nanoparticle-assembled microprisms photoanode showed an overall light-to-electricity conversion efficiency of 2.4% with a short-circuit current density of 7.46 mA cm(-2), an open-circuit voltage of 0.686 V, and a fill factor of 46.1%.
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