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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국전기전자재료학회 Transactions on Electrical and Electronic Materials Transactions on Electrical and Electronic Materials 제8권 제6호
- 발행연도
- 2007.1
- 수록면
- 255 - 259 (5page)
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초록· 키워드
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We have synthesized CaS:Eu2+ phosphor by using a sealing vessel and evaluated its photoluminescence properties. The method using a sealing vessel is simple and economical in comparison with other methods reported up to date. As an activator concentration was increased from 0.1 mol% to 4 mol%, the main emission wavelength of the phosphor was increased from 642 nm to 651 nm due to the crystal field splitting of 5d levels of Eu2+ ion. Although the same amount of Eu2O3 was used, the concentration of the activator ions, which were reduced from Eu3+ to Eu2+ and substituted Ca2+ ions, was increased with increase of firing temperature. Therefore, the main emission wavelength was also shifted from 645 nm to 651 nm with increase of firing temperature from 1100 °C to 1300 °C. The critical distance (Rc1 = 20.65 Å) between Eu2+ ions calculated from the critical concentration was well matched with that (Rc2 = 19.17 Å) calculated from the Dexter formula.
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참고문헌 (13)
참고문헌 신청
/ 1948 / The effect of activator concentration on the infrared-sensitive phosphor
/ 1953 / A theory of sensitized luminescence in solids
/ 1969 / Energy transfer in oxidic phosphors
/ 1997 / Materials Crystal Chemistry : 97 ~
/ 1998 / Mechanism of luminance decrease in BaMgAl10O17:Eu2+ phosphor by oxidation 145 : 3903 ~
/ 1953 / A theory of sensitized luminescence in solids
/ 1969 / Energy transfer in oxidic phosphors
/ 1997 / Materials Crystal Chemistry : 97 ~
/ 1998 / Mechanism of luminance decrease in BaMgAl10O17:Eu2+ phosphor by oxidation 145 : 3903 ~
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