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Amorphous indium-tungsten oxide (a-IWO) thin-film transistors (TFTs) were prepared by the RF-sputtering method, and their electrical stability under various conditions of wavelength light illumination was investigated. It was found that the electrical stability of the devices was dependent on the light wavelength and the illumination time. The analysis reveals that the improvement of the light illumination stability of the a-IWO-TFTs is ascribed to the oxygen vacancies transition between VO-VO+and VO-VO2+under different wavelength illuminations.
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Meng et al. (2016) studied this question.
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