Nanocrystalline $Y_3Al_5O_{12}$:Ce Phosphor-Based White Light-Emitting Diodes Embedded with CdS:Mn/ZnS Core/Shell Quantum Dots

  • Kim, Jong-Uk (Dept. of Materials Science and Engineering, Hongik University) ;
  • Lee, Dong-Kyoon (Dept. of Materials Science and Engineering, Hongik University) ;
  • Lee, Jong-Jin (Dept. of Materials Science and Engineering, Hongik University) ;
  • Yang, Hee-Sun (Dept. of Materials Science and Engineering, Hongik University)
  • Published : 2008.10.13

Abstract

Yellow-emitting $Y_3Al_5O_{12}$:Ce nanocrystalline phosphor and orange-emitting CdS:Mn/ZnS core/shell quantum dots were prepared by a modified polyol and a reverse micelle chemistry, respectively. To compensate a poor color rendering index of YAG:Ce nanocrystalline phosphor due to the lack of red spectral component, CdS:Mn/ZnS quantum dots were blended into YAG:Ce. Based on spectral evolutions in the blended systems, hybrid white light emitting diodes are fabricated and characterized.

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