Dual-color emitting quantum-dot-quantum-well CdSe-ZnS heteronanocrystals hybridized on InGaN/GaN light emitting diodes for high-quality white light generation


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Nizamoglu S., Mutlugun E. , Oezel T., Demir H. V. , Sapra S., Gaponik N., ...Daha Fazla

APPLIED PHYSICS LETTERS, cilt.92, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 92 Konu: 11
  • Basım Tarihi: 2008
  • Doi Numarası: 10.1063/1.2898892
  • Dergi Adı: APPLIED PHYSICS LETTERS

Özet

We report white light generation by hybridizing green-red emitting (CdSe)ZnS/CdSe (core)shell/shell quantum-dot-quantum-well heteronanocrystals on blue InGaN/GaN light emitting diodes with the photometric properties of tristimulus coordinates (x,y)=(0.36,0.30), luminous efficacy of optical radiation LE=278 lm/W, correlated color temperature CCT=3929 K, and color-rendering index CRI=75.1. We present the photometric analysis and the quantum mechanical design of these dual-color emitting heteronanocrystals synthesized to achieve high-quality white light when hybridized on light emitting diodes. Using such multicolor emitting heteronanocrystals facilitates simple device implementation while providing good photometric properties. (C) 2008 American Institute of Physics.