Journal
JOURNAL OF CRYSTAL GROWTH
Volume 322, Issue 1, Pages 33-37Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jcrysgro.2011.03.004
Keywords
Crystal structure; Atomic layer deposition; Tin oxide; Sapphire
Funding
- Ministry of Education, Science and Technology (MEST) [2010-0000396]
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Epitaxial SnO2 thin films were grown on (1 1 0) (a-cut) and (1 0 0) (m-cut) sapphire substrates using plasma enhanced atomic layer deposition (PEALD) with dibutyltindiacetate (DBTDA) as a precursor. X-ray diffraction, X-ray pole figure, and high resolution TEM analyses revealed that SnO2 film deposited on a-cut sapphire was (1 0 1) oriented with a small component of (2 0 0) orientation, and the (1 0 1) planes were slightly tilted due to the presence of (2 0 0) plane and/or twinning. SnO2 film on m-cut sapphire was strongly (0 0 1) oriented with a small amount of the (3 0 1) orientation. The determined in-plane orientation relationships were [0 1 0]SnO2//[0 0 1]Al2O3 and [1 0 (1) over bar ]SnO2//[(1) over bar 1 0]Al2O3 (a-cut) and [0 1 0]SnO2//[0 0 (1) over bar ]Al2O3 and [1 0 0]SnO2//[0 1 0]Al2O3 (m-cut) consistent with the previous reports. (C) 2011 Elsevier B.V. All rights reserved.
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