Doped quantum dots for white-light-emitting diodes without reabsorption of multiphase phosphors
Xiebing Wang1, Xiaosong Yan, Wanwan Li
1State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, PR of China.
Advanced Materials (Deerfield Beach, Fla.)
|April 25, 2012
Abstract:
A white-light-emitting diode (white LED) with good color rendering index is fabricated based on a blue LED combined with high-fluorescence CdS:Cu/ZnS quantum dots (QDs) and YAG:Ce phosphors. The reabsorption problem is overcome by the excellent optical properties and enlarged Stokes shift of the QDs with low absorption of light of wavelengths longer than 470 nm.
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