Photoluminescence from Pr3+-doped chalcogenide glasses excited by bandgap light
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OpenAlex topics: Phase-change materials and chalcogenides · Glass properties and applications · Luminescence Properties of Advanced Materials
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References (22)
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17. Temperature dependence in Pr3+-doped Ge33As12Se55 could not be investigated, since the bandgap energy becomes substantially greater than ℏω(=2.0 eV) at low temperatures
18. Glasses containing Ga and/or I may not be regarded as covalent glasses, which can exhibit the photodarkening, since these atoms behave as ions
19. Iijima · J. Appl. Phys. · 1980 · 51 · 210310.1063/1.327881 ↗
20. L.A. Riseberg, M.J. Weber, in: E. Wolf, (Ed.), Progress in Optics XIV, North-Holland, Amsterdam, 1976, p. 8910.1016/S0079-6638(08)70251-8 ↗
21. A probability that a Pr3+ ion is located within the resonance distance of 2–3 nm is ∼(2.5/7.5)3 on the average, and accordingly ∼0.01 wt% Pr3+ ions can be resonance-excited
22. The branching ratios from 1G4 to 3F3 and 3F4 have been calculated to be less than 0.04. It is mentioned here that the 1G4 to 3G5 luminescence appearing at 1.34 μm was not detected. This may be due to a small oscillator strength [4], despite the branching ratio is as large as ∼0.5