메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색
질문

논문 기본 정보

자료유형
학술저널
저자정보
김가연 (신라대학교) 신종언 (신라대학교) 조신호 (신라대학교)
저널정보
한국표면공학회 한국표면공학회지 한국표면공학회지 제50권 제4호
발행연도
2017.8
수록면
282 - 288 (7page)

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색
질문

이 논문의 연구 히스토리 (3)

초록· 키워드

오류제보하기
Eu<SUP>3+</SUP>- or Sm<SUP>3+</SUP>-doped La₂MoO<SUB>6</SUB> phosphors were synthesized with different concentrations of activator ions via a solid-state reaction. The X-ray diffraction patterns exhibited that crystalline structures of all the phosphors were tetragonal systems with the dominant peak occurring at (103) plane, irrespective of the concentration and the type of activator ions. The crystallites showed the pebble-like crystalline shapes and the average crystallite size increased with a tendency to agglomerate as the concentration of Eu<SUP>3+</SUP> ions increased. The excitation spectra of Eu<SUP>3+</SUP>-doped La₂MoO<SUB>6</SUB> phosphors contained an intense charge transfer band centered at 331 nm in the range of 250-370 nm and three weak peaks at 381, 394, and 415 nm, respectively, due to the <SUP>7</SUP>F<SUB>0</SUB>→<SUP>5</SUP>L<SUB>7</SUB>, SUP>7</SUP>F<SUB>0</SUB>→<SUP>5</SUP>L<SUB>6</SUB>, and <SUP>7</SUP>F<SUB>0</SUB>→<SUP>5</SUP>D₃ transitions of Eu<SUP>3+</SUP> ions. The emission spectra under excitation at 331 nm exhibited a strong red band centered at 620 nm and two weak bands at 593 and 704 nm. As the concentration of Eu<SUP>3+</SUP> increased from 1 to 20 mol%, the intensities of all the emission bands gradually increased. For the Sm<SUP>3+</SUP>-doped La₂MoO<SUB>6</SUB> phosphors, the emission spectra consisted of an intense emission band at 607 nm arising from the ⁴G<SUB>5/2</SUB>→<SUP>6</SUP>H<SUB>7/2</SUB> transition and three relatively small bands at 565, 648, and 707 nm originating from the ⁴G<SUB>5/2</SUB>→<SUP>6</SUP>H<SUB>5/2</SUB>, ⁴G<SUB>5/2</SUB>→<SUP>6</SUP>H<SUB>9/2</SUB>, and ⁴G<SUB>5/2</SUB>→<SUP>6</SUP>H<SUB>11/2</SUB> transitions of Sm3<SUP>+</SUP>, respectively. The intensities of all the emission bands approached maxima when concentration of Sm<SUP>3+</SUP> ions was 5 mol%. These results indicate that the optimum concentrations for highly-luminescent red and orange emission are 20 mol% of Eu<SUP>3+</SUP> and 5 mol% of Sm<SUP>3+</SUP> ions, respectively.

목차

Abstract
1. 서론
2. 실험
3. 결과 및 고찰
4. 결론
References

참고문헌 (20)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

이 논문의 저자 정보

최근 본 자료

전체보기

댓글(0)

0

UCI(KEPA) : I410-ECN-0101-2018-581-001281991