Luminescent characteristic of ZnS:Mn,Cu yellow phosphors for Light Emitting Diodes

백색 LED용 ZnS:Mn,Cu 황색 형광체의 발광 특성

  • Lee, Ji-Young (Department of physics Dong-eui University) ;
  • Yu, Il (Department of physics Dong-eui University)
  • Published : 2010.06.16

Abstract

ZnS:Mn yellow phosphors doped with Cu for white light emitting diodes were synthesized by solid state reaction method. Photoluminescence excitation spectra originated from $Mn^{2+}$ were ranged from 450 nm to 500 nm. The yellow emission at around 580 nm was associated with $^4T_1{\rightarrow}^6A_1$ transition of $Mn^{2+}$ ions in ZnS:Mn,Cu phosphors. The highest photoluminescence intensity of the phosphors under 405 nm excitation was obtained at Cu concentration of 0.02 mol%.

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