Journal
MATERIALS LETTERS
Volume 61, Issue 4-5, Pages 1118-1121Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2006.06.065
Keywords
photoluminescence; optical properties; sol-gel method; Al-doped ZnO
Funding
- National Research Foundation of Korea [과C6B1910] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Al-doped zinc oxide (AZO) thin films have been prepared via a sol-gel process. Optical and photoluminescent properties of the AZO films have been investigated. The UV absorption edge was blue shifted with increasing At doping concentration. Efficient green-yellow emission was obtained after annealing at 850 degrees C. For the 850 degrees C-annealed samples, the green peak was red shifted from 518 to 565 nm as the Al doping concentration increased from 0 to 2.0 at.%. In addition, violet emission in the range of 400-450 nm was observed in the 850 degrees C-annealed AZO films. The possible origins responsible for these emission bands have been discussed. (c) 2006 Elsevier B.V. All rights reserved.
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