Journal
JOURNAL OF LUMINESCENCE
Volume 122, Issue -, Pages 191-194Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2006.01.088
Keywords
ZnO; electric behavior of semiconductor; photoluminescence; doping
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Nitrogen (N)-doped zinc oxide (ZnO:N) films were deposited on quartz glass substrates at 510K by reactive radio-frequency magnetron sputtering of a ZnO target with sputtering gas of nitrogen. The as-grown ZnO:N shows insulating at roorn temperature, but behaves p-type conduction with resistivity of 456 Omega cm, carrier concentration of 1.2 x 10(17) cm(-3) and Hall mobility of 0.1 cm(2)/V S in the dark after annealed at 860 K for I h under 10(-4) Pa. Unfortunately, the p-type conduction is not stable in the dark and transforms into n-type gradually. After irradiated by sunlight for a few of minutes, the n-type ZnO:N reverts to metastable p-type one in the dark and remains p-type conductivity in the brightness. Formation and stability of the p-type ZnO:N are discussed in the present paper. (c) 2006 Elsevier B.V. All rights reserved.
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