Journal
THIN SOLID FILMS
Volume 516, Issue 18, Pages 6305-6309Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.tsf.2007.12.091
Keywords
zinc oxide; optical properties; structural properties
Ask authors/readers for more resources
(100) ZnO films were prepared by chemical vapor deposition utilizing zinc acetate dihydrate as the evaporation source. X-ray diffraction analysis of the as-deposited ZnO film shows a strong ZnO (100) diffraction peak centered at 31.85' with a full width at half-maximum (FWHM) of 0.50'. Post-growth annealing at 750 and 1000 'C reduces the FYY'HM of the (100) diffraction peak to 0.26' and 0.16', respectively. Photoluminescence of the as-deposited films shows a strong near-band-edge (NBE) emission centered at 3.14 eV which is due to defect states at the grain boundary. Post-growth annealing causes increase of defect emission and blue-shift of NBE emission. The blue-shift of NBE emission after annealing is due to re-crystallization that reduces grain boundary defects. The shift of defect emission from 1.80 to 2.25 eV indicates that the dominate defect changes from excess oxygen or zinc interstitial to defects on the surface, which is due to decomposition of ZnO. (c) 2007 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available