TITLE

Bandgap tailoring of rutile TiO2(110) via surface patterning with electron cyclotron resonance sputtering

AUTHOR(S)
Majumder, Subrata; Paramanik, D.; Solanki, V.; Bag, B. P.; Varma, Shikha
PUB. DATE
January 2011
SOURCE
Applied Physics Letters;1/31/2011, Vol. 98 Issue 5, p053105
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Crystalline TiO2 nanodots have been formed on single crystal rutile TiO2(110) surfaces via ion beam sputtering method by utilizing Ar ion beams from electron cyclotron resonance source. Nearly five times enhancement in absorbance of visible light, ∼5 times increase in luminescence, and ∼0.1 eV narrowing of bandgap are observed for nanodot-patterned surfaces, in the absence of any dopant material. Formation of crystalline rutile TiO2 nanodots and development of Ti interstitials on the TiO2(110) surface, after ion beam sputtering, are responsible for these observations. Results suggest that these nanodot-patterned rutile TiO2 surfaces can become effective photocatalysts.
ACCESSION #
57822865

 

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