The crystal structure and luminescence properties of the first lithium oxonitridolithosilicate Li3SiNO2:Eu2

Daniel S Wimmer; Kilian M Rießbeck; Markus Seibald; Dominik Baumann; Klaus Wurst; Gunter Heymann; Hubert Huppertz

doi:10.1039/d2dt03064k

The crystal structure and luminescence properties of the first lithium oxonitridolithosilicate Li₃SiNO₂:Eu²

Dalton Trans. 2022 Nov 8;51(43):16465-16478. doi: 10.1039/d2dt03064k.

Authors

Daniel S Wimmer¹, Kilian M Rießbeck¹, Markus Seibald², Dominik Baumann², Klaus Wurst¹, Gunter Heymann¹, Hubert Huppertz¹

Affiliations

¹ Institut für Allgemeine, Anorganische und Theoretische Chemie, Universität Innsbruck, Innrain 80-82, A-6020 Innsbruck, Austria. Hubert.Huppertz@uibk.ac.at.
² ams-OSRAM International GmbH, Mittelstetter Weg 2, D-86830 Schwabmünchen, Germany.

PMID: 36301123
DOI: 10.1039/d2dt03064k

Abstract

The compound Li₃SiNO₂:Eu²⁺ was synthesized in high temperature solid-state reactions in weld shut tantalum ampules and the crystal structure of Li₃SiNO₂ has been determined by single-crystal X-ray diffraction. It crystallizes in the monoclinic space group C2/c (no. 15) with the lattice parameters a = 1049.01(3), b = 1103.42(3), c = 511.86(2) pm, β = 116.14(1)°, and a volume of V = 0.53187(2) nm³. This compound is built up from two different layers, which are arranged alternately along the crystallographic a-axis. The results from single-crystal diffraction were confirmed by the Rietveld analysis of bulk samples. Moreover, Li₃SiNO₂ could be successfully doped with the activator ion Eu²⁺ and the luminescence spectroscopy of single-crystals revealed broad band emission at λ_max = 601 nm (fwhm = 90 nm).