Journal
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
Volume 252, Issue 11, Pages 2620-2625Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssb.201552453
Keywords
annealing; density functional theory; nanocrystals; photoluminescence; Raman spectroscopy; ZnO
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Funding
- DFG [SFB 787]
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The optical and vibrational properties of zinc oxide nanocrystals (ZnO NCs), grown by chemical precipitation method, were investigated following thermal annealing treatments in oxygen, argon, and zinc vapors at temperatures up to 900 degrees C. Raman scattering and photoluminescence techniques were utilized to show the effect of temperature annealing in various environments on optical and structural properties of ZnO NCs, referring them to the reduction and increase of certain intrinsic defect concentrations. The experimental results are complemented by density functional theory calculations for understanding the correlation between Raman modes induced with different annealing procedures and certain intrinsic point defects. (C) 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
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