Light emission properties of nanoparticles doped with transition metal and rare earth ions

Marek Godlewski*, Sergey Yatsunneko, Michal M. Godlewski

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

1 Citation (Scopus)

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.

Original languageEnglish
Title of host publicationAdvanced Optical Materials, Technologies, and Devices
Volume6596
DOIs
Publication statusPublished - 2007
EventAdvanced Optical Materials, Technologies, and Devices - Vilnius, Lithuania
Duration: 27 Aug 200630 Aug 2006

Other

OtherAdvanced Optical Materials, Technologies, and Devices
CountryLithuania
CityVilnius
Period27/08/0630/08/06

Keywords

  • Fluorescence labels
  • Luminescence
  • Nanoparticles
  • Phosphors
  • Spin dependent interactions

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