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Epitaxial Chemical Deposition of ZnO Nanocolumns from NaOH Solutions

Published online by Cambridge University Press:  03 September 2012

Renee B. Peterson ,
Clark L. Fields  and
Brian A. Gregg
Renee B. Peterson
Affiliation:
Department of Chemistry and Biochemistry, University of Northern Colorado Greeley, CO 80639
Clark L. Fields
Affiliation:
Department of Chemistry and Biochemistry, University of Northern Colorado Greeley, CO 80639
Brian A. Gregg
Affiliation:
National Renewable Energy Laboratory, Golden, CO 80401
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Abstract

A new method of depositing epitaxial ZnO nanocolumns on sputter-coated ZnO substrates is described that utilizes supersaturated zincate species in sodium hydroxide solutions and requires no complexing agents. Uniform arrays of columns are grown reproducibly over entire substrates in 10 to 50 min. Columns are 50 to 2000 nm long and 50 to 100 nm wide. Strict substrate cleaning and/or preparations are not necessary with this method, in contrast to many other techniques. Films grow only on substrates pre-coated with ZnO, not on bare glass or ITOor SnO2-coated glass. Factors affecting the column growth are elucidated and experimental observations are correlated with crystal growth theory.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 822: Symposium S – Nanostructured Materials in Alternative Energy Devices , 2004 , S5.5
Copyright
Copyright © Materials Research Society 2004

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