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25 January 2007 Light emission properties of nanoparticles doped with transition metal and rare earth ions
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Proceedings Volume 6596, Advanced Optical Materials, Technologies, and Devices; 659602 (2007) https://doi.org/10.1117/12.726353
Event: Advanced Optical Materials, Technologies, and Devices, 2006, Vilnius, Lithuania
Abstract
Nanoparticles of wide band gap II-VI compounds doped with transition metal (TM) and rare earth (RE) ions show fairly efficient light emission. Mechanisms of enhancement of 3d-3d (TM ions) and 4f-4f (RE ions) intra-shell transitions are discussed. It is demonstrated that quantum confinement, imposed on free carriers in nanoparticles, enhances spin dependent interactions of free carriers with TM and RE impurities. These interactions relax parity and spin selections rules for intra-shell transitions. We also show that host-to-impurity energy transfer is increased in nanoparticles, as compared to situation found in bulk samples.
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Marek Godlewski, Sergey Yatsunneko, and Michal M. Godlewski "Light emission properties of nanoparticles doped with transition metal and rare earth ions", Proc. SPIE 6596, Advanced Optical Materials, Technologies, and Devices, 659602 (25 January 2007); https://doi.org/10.1117/12.726353
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