Journal
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
Volume 23, Issue 2, Pages 403-407Publisher
SPRINGER
DOI: 10.1007/s10854-011-0465-z
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Funding
- Guangxi Key Laboratory of Information Materials [0710908-05-Z]
- Guangxi Specific Project Construction of Infrastructure Platform for Science and Technology [10-046-13]
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Mg0.2Zn0.8O:Al UV transparent conducting thin films were deposited by RF magnetron sputtering at room temperature with a rapid annealing process. Effects of sputtering power, argon gas pressure and annealing temperature on structure, optical and electrical properties of Mg0.2Zn0.8O:Al films were investigated. The experimental results show that Mg0.2Zn0.8O:Al thin films exhibit high preferred c-axis-orientation. The sputtering power, argon gas pressure and annealing temperature all exert a strong influence on the electrical resistivity of Mg0.2Zn0.8O:Al thin films due to the variation of carrier concentration and mobility in films derived from the change of effective doping and crystallinity. The lowest electrical resistivity of Mg0.2Zn0.8O:Al thin films is 3.5 x 10(-3) Omega center dot cm when the sputtering power is 200 W, the argon gas pressure is 2.0 Pa and the annealing temperature is above 500 A degrees C. The transparent spectrum range of Mg0.2Zn0.8O:Al thin films extend to ultraviolet band and the optical transmittance is between 80 and 90%, but the sputtering power, argon gas pressure and annealing temperature all exert little influence on optical transmittance.
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