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

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, beta = 116.14(1)degrees, and a volume of V = 0.53187(2) nm(3). 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 lambda(max) = 601 nm (fwhm = 90 nm).

Automated summary

The compound Li3SiNO2:Eu2+ was synthesized using high temperature solid-state reactions in weld shut tantalum ampules, and its crystal structure was determined by single-crystal X-ray diffraction. It consists of two different layers arranged alternately along the crystallographic a-axis, and can be doped with Eu2+ activator ion to exhibit broad band emission at λ(max) = 601 nm (fwhm = 90 nm) in luminescence spectroscopy of single-crystals.