Preparation, Characterization and Photoluminescence Properties of Ca<SUB>1-x</SUB>Sr<SUB>x</SUB>S:Eu Red-emitting Phosphors for a White LED

Preparation, Characterization and Photoluminescence Properties of Ca_1-xSr_xS:Eu Red-emitting Phosphors for a White LED
Preparation, Characterization and Photoluminescence Properties of Ca_1-xSr_xS:Eu Red-emitting Phosphors for a White LED

ㆍ 저자명: Sung. Hye-Jin,Cho. Young-Sik,Huh. Young-Duk,Do. Young-Rag
ㆍ 간행물명: Bulletin of the Korean Chemical Society
ㆍ 권/호정보: 2007년|28권 8호|pp.1280-1284 (5 pages)
ㆍ 발행정보: 대한화학회
ㆍ 파일정보: 정기간행물|ENG|
PDF텍스트
ㆍ 주제분야: 기타

이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.

서지반출

기타언어초록

A series of Ca1-xSrxS:Eu (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0) phosphors were synthesized by solid-state reactions. The Ca1-xSrxS:Eu phosphors have a strong absorption at 455 nm, which corresponds to the emission wavelength of a blue LED. The emission peak of Ca1-xSrxS:Eu is blue shifted from 655 to 618 nm with increasing Sr content. The characteristics of Ca1-xSrxS:Eu phosphors make them suitable for use as wavelengthtunable red-emitting phosphors for three-band white LEDs pumped by a blue LED. In support of this, we fabricated a three-band white LED by coating SrGa2S4:Eu and Ca0.6Sr0.4S:Eu phosphors onto a blue LED chip, and characterized its optical properties.

키워드

$Ca_{1-x}Sr_xS:Eu$ phosphor Three-band white LED Photoluminescence

다운URL