Preparation and characterization of sol–gel Li and Al codoped ZnO thin films

Li and Al codoped ZnO (LAZO) thin films have been prepared by a sol–gel method and their structural and optical properties have been investigated. The prepared LAZO films had an average transmittance of over 85% in the visible range. The UV absorption edge was red-shifted with Li-doping, whereas it...

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Bibliographic Details
Published in:Materials letters 2010-01, Vol.64 (2), p.157-160
Main Authors: Nian, Hongen, Hahn, Sung Hong, Koo, Kee-Kahb, Kim, Jae Seong, Kim, Sunwook, Shin, Eun Woo, Kim, Eui Jung
Format: Article
Language:English
Subjects:
Li and Al codoped ZnO
Optical materials and properties
Sol–gel preparation
Thin films
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Summary:Li and Al codoped ZnO (LAZO) thin films have been prepared by a sol–gel method and their structural and optical properties have been investigated. The prepared LAZO films had an average transmittance of over 85% in the visible range. The UV absorption edge was red-shifted with Li-doping, whereas it was blue-shifted with Al-doping. A broad yellowish-white emission was observed from the LAZO films annealed above 600 °C. The visible emission was enhanced with increasing annealing temperature and dopant concentration.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2009.10.030