Abstract
An efficient mechanism of rare earth (RE) intra-ion excitation due to nonradiative bound exciton (BE) recombination is discussed. We first show that some RE ions, those which can change their charge state, bind excitons. RE bound excitons recombine nonradiatively due to the impurity Auger effect, i.e. energy transfer to core states, which results in core excitation, followed by an intra-ion emission. The correlation between the energy structure of an RE-BE system and the recombination mechanism is discussed from examples of Eu, Yb and Sm impurities in ZnS, and Eu in Ca xCd 1−xF 2 crystals.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
