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KMID : 1059520060500060471
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Journal of the Korean Chemical Society
2006 Volume.50 No. 6 p.471 ~ p.476
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Synthesis and Optical Properties of Ca1-xSrxS:Ce Phosphors
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Sung Hye-Jin
Do Young-Rag
Huh Young-Duk
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Abstract
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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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KEYWORD
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Ca1-xSrxS:Ce, Phosphor
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