Tunable visible emission and warm white photoluminescence of lithium-doped zinc oxide thin films |
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| Authors: | Mingsong Wang Eun Woo Shin Jin Suk Chung Seung Hyun Hur Eui Jung Kim Sung Hong Hahn and Kee-Kahb Koo |
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| Affiliation: | (1) School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China;(2) Department of Chemical Engineering, University of Ulsan, Ulsan, 680-749, Korea;(3) Department of Physics, University of Ulsan, Ulsan, 680-749, Korea;(4) Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, 121-742, Korea; |
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| Abstract: | Visible emission of Li-doped ZnO (LZO) thin films prepared by a sol–gel method has been tuned in a wide range from blue-green
to yellow. Blue-green, yellow, and warm white emissions are observed as 5.0 at.% LZO thin films are annealed in N2, air, and He, respectively. A strong dependence of the defect emission of LZO on annealing atmosphere suggests that the visible
emissions of LZO are related to intrinsic defects rather than lithium impurities. |
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