Time-resolved photoluminescence and excited state structure of Bi.sup.3+./sup. center in YAlO.sub.3./sub

0432028 - FZÚ 2015 RIV NL eng J - Článek v odborném periodiku
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
Grant CEP: GA ČR GAP204/12/0805
Institucionální podpora: RVO:68378271
Klíčová slova: Bi³⁺-doped aluminum perovskite * time-resolved luminescence * scintillation materials
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.981, rok: 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.
Trvalý link: http://hdl.handle.net/11104/0236522