Refluxing Synthesis of Anatase TiO2 Nanoparticles Assembled Microprisms and Its Application for Dye-Sensitized Solar Cells
Anatase TiO2 nanoparticles-assembled microprisms with high specific surface area (222.21 m2/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%.
Keywords: ANATASE TIO2; DYE-SENSITIZED SOLAR CELLS; ELECTRON MICROSCOPY; MICROPRISMS; NANOPARTICLES
Document Type: Research Article
Publication date: 01 March 2014
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