含Cr3+透明微晶玻璃的发光性能

选择若干玻璃组成，制得了含莫来石晶相的透明微晶玻璃，利用吸收光谱和室温荧光光谱对玻璃和微晶玻璃的发光进行了研究。研究表明，在一定测试范围内提高玻璃的晶化温度可以提高Cr^3 离子的有效发光效率；Cr^3 离子浓度的增加使微晶玻璃的发光强度增加，但引起浓度淬灭，降低Cr^3 离子的有效发光效率。对微晶玻璃荧光光谱中688nm发射肩的成因进行了探讨，提出了微晶玻璃荧光光谱中688nm和700nm发射可能由^2E能级分裂引起的观点。

Luminescent Behaviors of Cr3+-Doped Transparent Glass Ceramics

By selecting some glass compositions the transparent glass-ceramics containing mullite crystal phase are obtained. The luminescent behaviors of these glasses and glass-ceramics were investigated according to the absorption spectrum and fluorescence spectrum. The results indicate that the emission intensity of glass-ceramic will enhance when the crystallization temperature was increased in a limited range, as a result the effective luminescent efficiency of Cr 3+ ion will increase. The increase of Cr 3+ ion concentration will cause the increase of emission intensity of glass-ceramics, but it will cause concentration quenching and decrease the effective luminescent efficiency of Cr 3+ ion. The origin of 688 nm emission shoulder in the glass-ceramic fluorescence spectrum is discussed, and it is suggested that the 700 nm and 688 nm emission should be attributed to the split of 2E energy level.