Journal
JOURNAL OF MATERIALS RESEARCH
Volume 26, Issue 20, Pages 2653-2659Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1557/jmr.2011.286
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Funding
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1063595] Funding Source: National Science Foundation
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We present a low-temperature, hydrothermal synthesis method for Ta-doped TiO2. Here, alkoxide-based precursors are mixed at low temperatures to suppress differential hydrolysis and phase separation. This method ensures homogeneous, molecular mixing of the Ta dopant with the native oxide up to a concentration of similar to 2.5 at.%. X-ray diffraction and energy dispersive spectrometer analyses confirm a uniformly doped rutile TiO2. Scanning electron microscopy and transmission electron microscopy analyses reveal a highly branched structure. Optoelectronic properties of these structures were investigated using ultraviolet-visible spectroscopy and low-temperature photoluminescence.
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