| Autor: |
Znamenskiĭ, N. V., Shashkov, A. Yu., Orlov, Yu. V., Yukina, T. G., Malyukin, Yu. V., Zhmurin, P. N., Velikhov, Yu. N., Ganina, I. I. |
| Předmět: |
|
| Zdroj: |
JETP Letters; 10/15/2006, Vol. 84 Issue 4, p180-184, 5p |
| Abstrakt: |
In Y2SiO5:Pr3+ nanocrystals, an ordered phase is observed in the 1 D 2 luminescence decay curves of Pr3+ ions at their anomalously low concentration (0.5 at %). This effect is caused by the predominant accumulation of activator ions near the nanocrystal surface, which provides relaxation of the elastic strains arising as a result of the misfit between the ionic radii of Pr3+ and Y3+. The concentration quenching of Pr3+ luminescence is due to cooperative cross relaxation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
