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Time-resolved photoluminescence and excited state structure of Bi.sup.3+./sup. center in YAlO.sub.3./sub
- 1.0432028 - FZÚ 2015 RIV NL eng J - Journal Article
Krasnikov, A. - Lipinska, L. - Mihóková, Eva - Nikl, Martin - Shalapska, T. - Suchocki, A. - Zazubovich, S. - Zhydachevskii, Ya.
Time-resolved photoluminescence and excited state structure of Bi3+ center in YAlO3
Optical Materials. Roč. 36, č. 10 (2014), s. 1705-1708. ISSN 0925-3467. E-ISSN 1873-1252
R&D Projects: GA ČR GAP204/12/0805
Institutional support: RVO:68378271
Keywords : Bi3+-doped aluminum perovskite * time-resolved luminescence * scintillation materials
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.981, year: 2014
YAlO3:Bi ceramics prepared from the nanopowders synthesized by the sol–gel (Pechini) method are studied at 8–400 K by the time-resolved spectroscopy methods. An intense dominant ultraviolet luminescence of YAlO3:Bi is shown to arise from the radiative decay of the metastable and radiative minima of the triplet relaxed excited state (RES) of Bi3+ centers related to the 3P0, 3P1 levels of a free Bi3+ ion, respectively. The energy separation between the radiative and metastable minima, and the rates of the radiative and nonradiative transitions from these minima, are determined.
Permanent Link: http://hdl.handle.net/11104/0236522
Number of the records: 1