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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 50, Number 6
JKCSEZ 50(6)
December 20, 2006 

Synthesis and Optical Properties of Ca1-xSrxS:Ce Phosphors

Ca1-xSrxS:Ce 형광체의 합성과 광 특성
Hye-Jin Sung, Young Rag Do, Young-Duk Huh*

성혜진, 도영락, 허영덕*
Ca1-xSrxS:Ce, 형광체 , Ca1-xSrxS:Ce, Phosphor
일련의 Ca1-xSrxS:Ce 형광체를 고상법으로 합성하였다. Ca1-xSrxS:Ce 형광체는 430 nm와 470 nm 영역에서 강한 흡수가 있다. CaS:Ce은 510 nm와 570 nm에서 발광한다. Ca1-xSrxS:Ce에서 Ca이 Sr으로 치환되면 발광 파장은 단파장 이동을 한다. 청색 발광 다이오드를 사용하여 백색 발광 다이오드를 얻는데 Ca1-xSrxS:Ce 형광체는 푸른빛을 띤 녹색과 황색을 방출할 수 있는 형광체로 사용될 수 있다. 백색 발광 다이오드의 적용을 위한 Ca1-xSrxS:Ce 형광체의 광 특성을 확인하였다.

A series of Ca1-xSrxS:Ce phosphors were synthesized by solid-state reactions. The Ca1-xSrxS:Ce phosphors have a strong absorption in region from 430 nm to 470 nm. The emission peaks of CaS:Ce are located at 510 nm and 570 nm. The partial replacement of Ca by Sr in Ca1-xSrxS:Ce causes a blue shift of emission wavelengths. The Ca1-xSrxS:Ce can be used as bluish green and yellow emitting phosphors for white light emitting diodes (LEDs) pumped by the blue LED. We reported the optical properties of Ca1-xSrxS:Ce phosphors for application in phosphor converted white LEDs.

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