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Xiebing Wang, Xiaosong Yan, Wanwan Li and Kang Sun Doped Quantum Dots for White-Light-Emitting Diodes Without Reabsorption of Multiphase Phosphors Advanced Materials 24

Version of Record online: 23 APR 2012 | DOI: 10.1002/adma.201104861

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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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