학술논문
Microwave-assisted Sintering Synthesis of Sr₍₃₋ₓ₎SiO₅:xEu²⁺(x=0.01-0.05) and Luminescent Propreties
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- 영문명
- 발행기관
- 한국방사선학회
- 저자명
- 이우철 양현경 제재용
- 간행물 정보
- 『한국방사선학회 학술대회 논문집』한국방사선학회 2017년 추계종합학술대회논문집, 84~84쪽, 전체 1쪽
- 주제분류
- 공학 > 기타공학
- 파일형태
- 발행일자
- 2017.11.10
0원
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국문 초록
White light-emitting diodes(WLEDs) is one of potential candidate for conventional incandescent and fluorescent lamp for next generation due to its strengths such as a high brightness, reliability, long life time and low environmental impact caused by a high efficiency. A commercial way of WLEDs is fabricated by combining the InGaN chip emitting around at 460 nm and YAG:Ce³⁺ phosphors emitting yellow. However the commercialized WLEDs possesses high thermal quenching and low color rendering index (CRI) caused by low intensity at red emission. From these reasons, other kinds of new fluorescent material such as silicate, nitride and aluminate were widely carried out.
In order to develop WLEDs Sr₃SiO₅:Eu²⁺ phosphor has been studied under the blue radiation excitation. Sr₃SiO₅:Eu²⁺ exhibits a broad single emission band and locating at 500-700 nm with a peak at 575 nm, which is highly efficient orange emitting phosphor for WLEDs.
In this research, Sr₍₃₋ₓ₎SiO₅:xEu²⁺(x:0.01-0.05) were synthesized on the effects of activator concentration by microwave-assisted sintering ,which is rapid, cheap and comfortable. The synthesized phosphors were characterized by crystalline phase, surface morphology and luminescent properties.
영문 초록
목차
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