Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 20, Issue 17, Pages 4916-4920Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201304963
Keywords
energy conversion; light-harvesting layer; nanostructures; phase control; titanium dioxide
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Funding
- National Basic Research Program of China [2011CBA00700, 2013CB934304]
- National Natural Science Foundation of China [51272255]
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A facile route to synthesize amorphous TiO2 nanospheres by a controlled oxidation and hydrolysis process without any structure-directing agents or templates is presented. The size of the amorphous TiO2 nanospheres can be easily turned from 20 to 1500nm by adjusting either the Ti species or ethanol content in the reaction solution. The phase structure of nanospheres can be controlled by hydrothermal treatment. The TiO2 nanospheres show excellent size-dependent light-scattering effects and can be structured into a light-harvesting layer for dye-sensitized solar cells with a quite high power conversion efficiency of 9.25%.
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