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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제20권 제6호
- 발행연도
- 2019.1
- 수록면
- 660 - 664 (5page)
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The structural modification of copper oxide thin films was investigated by controlling the thermal annealing atmosphere and temperature, which in turn affected their optical and electrical properties. Copper oxide thin films were deposited by spray pyrolysis deposition at 300 oC to give a uniform surface consisting of submicron-size grains with cubic Cu2O crystalline structure. As the Cu2O thin films were thermally annealed at less than 700 oC, they were transformed into the CuO phase. However, a mixed phase of CuO and Cu2O was observed at temperatures above 800 oC. As the thermal annealing temperature was increased from 400 to 700 oC, the optical bandgap energy of the copper oxide thin films was decreased from 2.54 to 1.91 eV and the electrical charge carrier concentration was decreased gradually due to the improved crystalline quality. In this way, the crystalline structure of the copper oxide and its corresponding optical and electrical properties could be controlled by thermal annealing.
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