Preparation and luminescent properties of Mn2+ doped glass and glass-ceramics containing LiZnPO4 nanocrystals

Fabrication of Mn2+ doped Li2O-ZnO-P2O5 phosphate glass-ceramics with a broad red emission is reported in the present work. The influence of heat treatment process on the crystallization behavior and optical properties of glasses were investigated. The results indicated that LiZnPO4 crystals precipitated in glass matrix after proper heat treatment. Compared with the glass, the red emission intensity of Mn2+ activated glass-ceramics exhibited significant enhancement. However, there is no evidence showing that Mn2+ ions exist in the LiZnPO4 crystals. (C) 2013 Elsevier B.V. All rights reserved.