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Nanostructure development in photodeposited, titania-based thin films

Published online by Cambridge University Press:  31 January 2011

J. David Musgraves ,
B.G. Potter Jr.  and
Timothy J. Boyle
J. David Musgraves
Affiliation:
Arizona Materials Laboratory, Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85712
B.G. Potter Jr.*
Affiliation:
Arizona Materials Laboratory, Department of Materials Science and Engineering, University of Arizona, Tucson, Arizona 85712
Timothy J. Boyle
Affiliation:
Sandia National Laboratories, Advanced Materials Laboratory, Albuquerque, New Mexico 87105
*
a) Address all correspondence to this author. e-mail: bgpotter@mse.arizona.edu
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Abstract

Ultraviolet irradiation (λ = 248 nm) was used to photocatalyze a solution of the heteroleptic titanium alkoxide (OPy)2Ti(TAP)2 [where OPy = pyridine carbinoxide and TAP = 2,4,6 tris(dimethylamino)phenoxide], leading to the deposition of a titania-based thin film only in the exposed region. The effect of water addition to the (OPy)2Ti(TAP)2 pyridine solution on the properties of the final photodeposited film structure was examined by using vibrational spectroscopy and electron microscopy. Under consistent optical exposure conditions, the amount of water added altered the nanoscale porosity of the final material produced. Films deposited from a solution with a 1:1 H2O/Ti content exhibited surface pores ∼100 nm in diameter, whereas a 4:1 ratio yielded 10-nm pores, and material produced from a 8:1 solution appeared fully condensed. In addition, the effect of postdeposition thermal treatments on the nanostructure and chemistry of the photodeposited films was examined.

Keywords

Thin filmSolution depositionPhotochemical
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 11 , November 2009 , pp. 3372 - 3379
Copyright
Copyright © Materials Research Society 2009

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