• Title/Summary/Keyword: Ligh -emitting devices

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Photoluminescence of Undoped and $Ho^{3+}-Doped ZnSe,\; Mg_{0.15}Zn_{0.85}$Se Single Crystals (ZnSe, $ZnSe:Ho^{+3}, Mg_{0.15}Zn_{0.85}Se\; 및 Mg_{0.15}Zn_{0.85}Se:Ho^{3+}$ 단결정의 광발광 특성에 관한 연구)

  • Kim, Nam-O;Kim, Hyeong-Gon;O, Geum-Gon
    • The Transactions of the Korean Institute of Electrical Engineers C
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    • v.50 no.9
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    • pp.434-437
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    • 2001

  • ZnSe, ZnSe:Ho/sup 3+/, Mg/sub x/Zn/sub 1-x/Se and Mg/sub x/Zn/sub 1-x/Se:Ho/sup 3+/ crystals were grown by the chemical transport reaction method. The crystal structures and optical energy band gaps of the single crystals were investigated. Their photoluminescence(PL) spectra were measured at 10 [K]. Sharp emission peaks in the blue-green wavelength range and broad emission peaks in the yellow-red wavelength range were observed. The single crystals doped with 1.0 [mol%] of holmium did not show the sharp emission peaks because of defects which were thought to be originated to the holmium dopant.

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