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Synthesis and luminescence properties of $Sr_{1-x}Ca_xGa_2S_4:Ce,Na$ phosphors  

Sung, Hye-Jin (Department of Chemistry, Dankook University)
Huh, Young-Duk (Department of Chemistry, Dankook University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.16, no.6, 2006 , pp. 267-272 More about this Journal
Abstract
A series of $Sr_{1-x}Ca_xGa_2S_4:Ce,Na$ phosphors have been synthesized by solid-state reaction. The photoluminescence and structural properties of $Sr_{1-x}Ca_xGa_2S_4:Ce,Na$ have been examined. The $Sr_{1-x}Ca_xGa_2S_4:Ce,Na$ phosphors have a strong absorption at 400 nm, which is the emission wavelength of a violet light emitting diode (LED). The emission peaks of $SrGa_2S_4:Ce,Na$are located at 448 nm and 485 nm. The partial replacement of Sr by Ca in $Sr_{1-x}Ca_xGa_2S_4:Ce,Na$ causes a red shift of emission wavelengths. The $Sr_{1-x}Ca_xGa_2S_4:Ce,Na$ can be used as blue emitting phosphors pumped by the violet LED for fabricating the multi-band white LED.
Keywords
$Sr_{1-x}Ca_xGa_2S_4:Ce,Na$; Violet LED;
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Times Cited By KSCI : 1  (Citation Analysis)
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