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Green-Emitting CePO4:Tb/LaPO4 Core–Shell Nanoparticles with 70 % Photoluminescence Quantum Yield

Authors


  • We thank A. Kornowski and S. Bartholdi-Nawrath for TEM investigations and Dr. Lühmann at Malvern Instruments GmbH for dynamic light-scattering measurements. This work was supported in part by the BMBF.

Abstract

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Quantum leap: Very high quantum yields, thought to be impossible for nanocrystalline phosphor materials, were achieved with CePO4:Tb/LaPO4 core–shell nanoparticles (see picture). Because the LaPO4 shell reduces energy losses at the particle surface, transparent colloidal solutions of these 8-nm particles are highly photoluminescent.

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