Abstract:Taking account difference in sputtering rate between Cu and Al, we use a polycrystalline CuAlO2 target with a ratio between Cu and Al being 0.9 ∶1 to prepare the Cu-Al-O film by RF magnetron sputtering. The electrical and the optical properties of the thin film are influenced by the temperature of the substrate. When the substrate temperature is around 500 ℃, the film has a good transmission of 70% in the range of the visible light. Calculated by the fitted formula, the direct band gap is 3.52 eV,and it is in … Show more
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