Low-temperature luminescence and energy transfer processes in Eu3+, Nd3+, and Cr-doped sol–gel PLZT ceramics
| Autor: | S. Murakami, Markus Herren, D. Rau, Taro Sakurai, Makoto Morita |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Photoluminescence
Materials science Energy transfer Doping Biophysics Analytical chemistry General Chemistry Condensed Matter Physics Biochemistry Atomic and Molecular Physics and Optics symbols.namesake Stark effect visual_art symbols visual_art.visual_art_medium Ceramic Luminescence Excitation Sol-gel Nuclear chemistry |
| Zdroj: | Journal of Luminescence. :215-219 |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/s0022-2313(99)00101-5 |
| Popis: | Luminescence and decay times of sol–gel PLZT(9/65/35) ceramics doped with Eu 3+ , Nd 3+ and chromium ions are investigated to elucidate site occupancy and energy transfer processes at lower temperatures down to 10 K, in comparison with those prepared by mixed-oxide method. Luminescence and excitation energy transfer in sol–gel PLZT: Eu 3+ , Nd 3+ are discussed with regard to trapping-limited energy transfer processes with critical distances of about 0.5 nm. The presence of three A sites in PLZT : Eu 3+ under site-selective excitations and two B sites in PLZT : Cr 3+ , Cr 5+ in NIR emission are confirmed at low temperatures. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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