J. Heo—contributing editor
Photoluminescence of Mn2+ Centers in Chalcohalide Glasses
Article first published online: 15 FEB 2011
© 2011 The American Ceramic Society
Journal of the American Ceramic Society
Volume 94, Issue 3, pages 660–662, March 2011
How to Cite
Yan, Q., Liu, Y., Chen, G., Da, N. and Wondraczek, L. (2011), Photoluminescence of Mn2+ Centers in Chalcohalide Glasses. Journal of the American Ceramic Society, 94: 660–662. doi: 10.1111/j.1551-2916.2010.04356.x
This work was financially supported by the Shanghai Leading Academic Discipline Project (Project No. B502) and National Natural Science Foundation of China, No. NSFC 51072052, as well as from the German Excellence Initiative within the cluster “Engineering of Advanced Materials—Hierarchical Structure Formation for Functional Devices” are gratefully acknowledged.
- Issue published online: 11 MAR 2011
- Article first published online: 15 FEB 2011
- Manuscript No. 28589. Received September 10, 2010; approved November 23, 2010.
We report on photoluminescence from Mn2+-doped chalcohalide glasses of the GeS2–Ga2S3–CsCl system. Upon blue excitation at 447 nm, a broad emission band occurs in the green spectral range from 500 to 600 nm, indicating the presence of tetrahedrally coordinated Mn2+ species. When the Mn2+-concentration is increased up to 2 mol%, an increasingly intense secondary emission band evolves at about 610–660 nm. Meanwhile, the intensity of the green band decreases gradually and shifts toward the red, resulting a very flatten luminescence from 500 to 750 nm, which provides a promising white light emitting source. As for the origin of this unique luminescence behavior of Mn2+, it is proposed that the ligand coordination number of Mn2+ in the present chalcohalide glasses experiences a partial change from tetrahedral to octahedral coordination.