| Autor: |
Ivanova, ZG, Ganesan, R, Adarsh, KV, Vassilev, VS, Aneva, Z, Cernosek, Z, Gopal, ESR |
| Jazyk: |
angličtina |
| Rok vydání: |
2005 |
| Předmět: |
|
| Zdroj: |
IndraStra Global. |
| ISSN: |
2381-3652 |
| Popis: |
Photoluminescence (PL) spectroscopy by excitation with 514.5 nm light at 4.2 and 77 K is applied to (GeS2)(80)(Ga2S3)(20): x mol % Er2S3 (x=0.3, 0.6, 0.9, 1.8, 2.1 and 2.4) glasses. The compositional dependence of the PL intensity is determined, and a quenching effect accompanied by the strongest absorption at 1.22 at % Er is established. The influence of temperature on the emission cross-section is investigated by deconvolution of the experimental spectra, and the observed fine features are explained on the basis of the energy level diagram of Er3+ ions. The distribution and changes of the structural units at higher Er concentrations are specified by Raman scattering, in the range 50-550 cm(-1). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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