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Abstract
The ZnO samples were prepared by firing at ∼900°C, finely powdered material under different degrees of reduction. Measurements of the green cathodoluminescence (CL) were done by using a vacuum fluorescent display. The g values of ESR spectrum measured from the powders at 77 K were g ‖ = 1.956±0.001 and g ⊥ = 1.955±0.001. The ESR signal of donors arises from the oxygen vacancy. The temperature dependence of line shapes and intensities of the center were investigated. The intensities of CL obtained were nearly inversely proportional to the intensity of ESR signal at g ⋍ 1.955 for various reducing conditions.
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