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Variation of Photoluminescence in Zirconia Gel by Pyrolysis (Variation of Photoluminescence in Zirconia Gel by Pyrolysis)

6 ํŽ˜์ด์งฟ’
๊ธฐํƒ€ํŒŒ์ผ
์ตœ์ดˆ๋“ฑ๋ก์ผ 2025.03.16 ์ตœ์ข…์ ฟ’์ž‘์ผ 2008.02
6P ๋ฏธ๋้ฉ๋ณด๊ธฐ
Variation of Photoluminescence in Zirconia Gel by Pyrolysis
  • ๋ฏธ๋้ฉ๋ณด๊ธฐ

    ์„œ์่ง์ •๋ต–

    ยท ๋ฐœํ–‰๊ธฐ๊ด€ : ํ•œ๊ตญ์„ธ๋ผ๋ฏนํ•™ํšŒ
    ยท ์ˆ˜๋ก์ง€ ์ •๋ณด : ํ•œ๊ตญ์„ธ๋ผ๋ฏนํ•™ํšŒ์ง€ / 45๊ถŒ / 2ํ˜ธ / 126 ~ 131ํŽ˜์ด์งฟ’
    ยท ์ €์ž๋ช… : ํ•œ๊ทœ์„, ๊ณ ํƒœ๊ฒฝ

    ์ดˆ๋ก

    In this study, we prepared zirconia gel by the sol-gel method and investigated its photoluminescence properties by varying pyrolysistemperature. The addition of acetic acid into a Zr-alkoxide solution resulted in forming the bidentate ligands with Zr ions andoC, the zirconia nanocrystals with tetragonal structure gradually appearedin the gel. The PL intensity of the zirconia gel increased with increasing the pyrolysis temperature up to 350oC, but decreased abovethe temperature. Concurrently, its PL peak wavelength continuously shifted from ~440 nm to ~550 nm with the temperature. The PLcharacteristics of the zirconia gels were closely associated with decomposition of residual organic groups, the formation of the zirconiananocrystals, and the tetragonal to monoclinic phase transformation.

    ์˜์–ด์ดˆ๋ก

    In this study, we prepared zirconia gel by the sol-gel method and investigated its photoluminescence properties by varying pyrolysistemperature. The addition of acetic acid into a Zr-alkoxide solution resulted in forming the bidentate ligands with Zr ions andoC, the zirconia nanocrystals with tetragonal structure gradually appearedin the gel. The PL intensity of the zirconia gel increased with increasing the pyrolysis temperature up to 350oC, but decreased abovethe temperature. Concurrently, its PL peak wavelength continuously shifted from ~440 nm to ~550 nm with the temperature. The PLcharacteristics of the zirconia gels were closely associated with decomposition of residual organic groups, the formation of the zirconiananocrystals, and the tetragonal to monoclinic phase transformation.

    ์ฐธ๊ณ ์ž๋ฃŒ

    ยท ์—†์Œ
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