Structural and photoluminescence properties of doped and REE-endmember mixed-framework rare-earth sorosilicates
- Autor(en)
- Maria Wierzbicka-Wieczorek, Uwe Kolitsch, Christoph Lenz, Gerald Giester
- Abstrakt
Photoluminescence (PL) properties of lanthanide-doped mixed-framework barium yttrium sorosilicates Ln:BaY2(Si3O10) (Ln=Pr3+, Sm3+, or Er3+) and Ln:BaY4(Si2O7)(Si3O10) (Ln=Pr3+, Sm3+, Er3+, or Ho3+), and selected REE-endmembers BaREE2(Si3O10) (REE=Y, Dy) and BaREE4(Si2O7)(Si3O10) (REE=Y, Er, Ho) are presented. These silicates were synthesized by a high-temp., molybdate-based flux-growth method. Results from single-crystal structure refinements are given and briefly discussed in the spectroscopic context. Sm3+, present in both sorosilicate structure types, causes transitions in the visible yellow to orange spectral range at 600 and 570 nm, according to the 4G5/26HJ transitions. Pr3+ is responsible for dominant PL bands around 500 nm due to the 3P03H4 transition, showing a blue-green emitting color. Er3+ exhibits green-yellow emission with strongest bands between 540 and 570 nm, which can be assocd. with the 4S3/24I15/2 transition. Ho3+ shows a dominant characteristic PL emission in the red spectral region, which is assigned to the 5F55I8 transition. The photoluminescence of emission of Dy3+ centers, with the main emission at 575 nm in the visible yellow region, is assigned to the 4F9/26H13/2 transition. Strong differences in the intensity of PL emissions of the REE-endmembers and Ln-doped silicates are caused by self-quenching effects due to high concn. of Ln3+ cations in the crystal structure. Unexpected PL emission spectra of the host sorosilicates BaY2(Si3O10) and BaY4(Si2O7)(Si3O10) are caused by trace impurity contents of other Ln3+ cations.
- Organisation(en)
- Institut für Mineralogie und Kristallographie
- Externe Organisation(en)
- Naturhistorisches Museum Wien (NHM), Friedrich-Schiller-Universität Jena
- Journal
- Journal of Luminescence
- Band
- 168
- Seiten
- 207-217
- Anzahl der Seiten
- 11
- ISSN
- 0022-2313
- DOI
- https://doi.org/10.1016/j.jlumin.2015.08.004
- Publikationsdatum
- 08-2015
- Peer-reviewed
- Ja
- ÖFOS 2012
- 104026 Spektroskopie, 104011 Materialchemie, 105113 Kristallographie
- Schlagwörter
- ASJC Scopus Sachgebiete
- Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Chemistry(all), Biophysics, Biochemistry
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/structural-and-photoluminescence-properties-of-doped-and-reeendmember-mixedframework-rareearth-sorosilicates(8a29fa4a-5529-42ac-9c6b-a37fc96c9e61).html