Optical Properties of CuAlO2 Synthesized by Sol-Gel Method

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CuAlO2 microcrystallites were synthesized by Sol-gel method at 1200°C with Cu (CH3COO)2·H2O, Al (NO3)3·9H2O and ethylene glycol as raw materials. The phase composition,morphology,and optical properties of CuAlO2 microcrystallites were chatacterized by X-ray diffraction, Scanning electron microscope,Photoluminescence and UV-visible spectroscopy respectively. The results of XRD show that CuAlO2 with delafossite crystal structure is obtained. The defect emission were observed through PL spectrum test. It can be concluded that Cu-vacancy may be the possible reason of the observed activated p-type conductivity of CuAlO2. Can be found three characterized peak (λ1=290nm, λ2=410nm, λ3=430 nm) on the spectra.

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362-365

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January 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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