The impurity-induced luminescence of RbMnF3
| Autor: | D. Pacheco, J. Danko, B. DiBartolo |
|---|---|
| Rok vydání: | 1983 |
| Předmět: |
Quenching (fluorescence)
Phonon Chemistry Exciton Biophysics General Chemistry Atmospheric temperature range Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Biochemistry Atomic and Molecular Physics and Optics Ion Condensed Matter::Materials Science Condensed Matter::Strongly Correlated Electrons Emission spectrum Atomic physics Absorption (electromagnetic radiation) Luminescence |
| Zdroj: | Journal of Luminescence. 28:27-39 |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/0022-2313(83)90023-6 |
| Popis: | The impurity-induced luminescence of RbMnF 3 has been studied in the temperature range, 4–120 K. Multimagnon sidebands of impurity-induced Mn 2+ emission lines have been detected spanning the spectral range, 5515–5960 A. The broad emission bands, which peak at 5750 A and 6440 A, have been attributed to phonon-assisted transitions from two impurity-induced Mn 2+ traps of different depths. Pulsed luminescence measurements indicate that the quenching of the shallow trap emission is by a thermal activation to the E1 exciton level whereas the quenching of the deeper trap emission is by a multiple phonon decay. The coupling between Mn 2+ ions is strong enough to support a detectable transfer of excitation between these two traps. The results of this research also include the observation in absorption of the E1 exciton line and its 1-magnon and possible 2-magnon sidebands. |
| Databáze: | OpenAIRE |
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