Luminescence and excited state dynamics in Bi.sup.3+./sup.-doped LiLaP.sub.4./sub.O.sub.12./sub. phosphates

Babin, Vladimir; Chernenko, K.; Demchenko, P.; Mihóková, Eva; Nikl, Martin; Pashuk, I.; Shalapska, T.; Voloshinovskii, A.; Zazubovich, S.

doi:https://dx.doi.org/10.1016/j.jlumin.2016.04.012

Number of the records: 1

Luminescence and excited state dynamics in Bi.sup.3+./sup.-doped LiLaP.sub.4./sub.O.sub.12./sub. phosphates

1.

SYSNO ASEP	0464863
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Luminescence and excited state dynamics in Bi³⁺-doped LiLaP₄O₁₂ phosphates
Author(s)	Babin, Vladimir (FZU-D)_{RID, ORCID} Chernenko, K. (EE) Demchenko, P. (UA) Mihóková, Eva (FZU-D)_{RID, ORCID, SAI} Nikl, Martin (FZU-D)_{RID, ORCID, SAI} Pashuk, I. (UA) Shalapska, T. (EE) Voloshinovskii, A. (UA) Zazubovich, S. (EE)
Source Title	Journal of Luminescence. - : Elsevier - ISSN 0022-2313 Roč. 176, Aug (2016), s. 324-330
Number of pages	7 s.
Language	eng - English
Country	NL - Netherlands
Keywords	photoluminescence ; time-resolved spectroscopy ; excited states
Subject RIV	BH - Optics, Masers, Lasers
R&D Projects	GAP204/12/0805 GA ČR - Czech Science Foundation (CSF)
Institutional support	FZU-D - RVO:68378271
UT WOS	000375940800045
EID SCOPUS	84964562898
DOI	10.1016/j.jlumin.2016.04.012
Annotation	Photo- and X-ray-excited luminescence characteristics of Bi-doped LiLaP4O12 phosphates with different bismuth contents are investigated in wide temperature range and compared with those of the undoped LiLaP4O12. The broad 2.95 eV emission band is found to arise from the bismuth dopant. Relatively large FWHM and Stokes shift of the emission band and especially the data on the low-temperature decay kinetics of the 2.95 eV emission and its temperature dependence, indicating a very small spin-orbit splitting energy of the corresponding excited state, allow the conclusion that this emission arises from the radiative decay of the triplet state of an exciton localized around a Bi3+ ion. No spectral bands are observed, arising from the electron transitions between the energy levels of Bi3+ ions. Phenomenological model is proposed for the description of the excited state dynamics of the Bi3+-related localized exciton and the parameters of the triplet localized exciton state are determined.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2017

Number of the records: 1