The quenching of bismuth(III) luminescence in yttrium oxide (Y2O3)
β Scribed by A.M. van de Craats; G. Blasse
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 324 KB
- Volume
- 243
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The luminescence intensity of Bi 3+ in Y203 decreases not only on increasing but also on decreasing the temperature. An explanation is proposed and the nature of the nonradiative process is discussed. Data on Bi3+-activated Lu203 and La203 are also reported.
π SIMILAR VOLUMES
Cooperative luminescence is reported for a dilute rare earth system, viz. La203-Yb 3+ 0.5 mol%. The observation of cooperative luminescence can be understood on the basis of the relatively strong interaction between the 4f electrons of neighbouring Yb 3+ ions (in comparison to other rare earth ions)
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The luminescence of Bi 3Ψ in the pyrochlore Gd 2 GaSbO 7 is evaluated in the 15 to 300 K temperature range. The rapid thermal quenching of Bi 3Ψ luminescence, despite the small Stokes shift, is postulated to involve a photoionization process arising from the interaction between the Bi 3Ψ 3 P 0, 1 ex