Abstract
The fluorescence of two divalent europium-activated oxonitridoaluminosilicates, namely SrSi5AlO2N7 and Sr-SiAl2O3N2, is reported in this work. The powder sample was synthesized by sintering at 1800°C (SrSi 5AlO2N7) or 1600°C (SrSiAl 2O3N2) for 2 h under 0.5 MPa N2. A single broadband blue-green emission is observed for both SrSi 5AlO2N7: Eu2+ and SrSiAl 2O3N2: Eu2+ at room temperature under ultraviolet excitation. The short-wavelength fluorescence is attributed to the weak crystal-field strength as a result of long distances between the activator ion and ligand anions. The effect of the Eu2+ concentration on the emission intensity and CIE chromaticity coordinations of both samples is presented.
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Xie, R. J., Hirosaki, N., Yamamoto, Y., Suehiro, T., Mitomo, M., & Sakuma, K. (2005). Fluorescence of Eu2+ in Strontium Oxonitridoaluminosilicates (SiAIONS). Journal of the Ceramic Society of Japan, 113(1319), 462–465. https://doi.org/10.2109/jcersj.113.462
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