掺铋离子BaO-B203玻璃的制备及其近红外发光性能的研究

摘要

Bi-doped BaO-B2O3 glasses are prepared by the melting method. Visible and infrared luminescence spectra, fluorescence decay curve and Raman scattering spectra are measured. NIR emissions, not only one broadband emission peak but also several emission peaks, appear in Bi-doped BaO-B2O3 glass under 808 nm LD pumping. The effect of the network structure of BaO-B2O3 glass on the NIR emission is discussed, and the mechanism for the emission is investigated preliminarily.%采用高温熔融法制备了掺Bi离子的BaO—B203玻璃，测定了样品玻璃的近红外以及可见光区的激发、发射谱、荧光衰减曲线以及Raman光谱．在808nm波长光的激发下，在掺Bi离子的BaO—B203玻璃中发现了近红外发光现象．且存在多个发光峰．讨论了玻璃网络结构对Bi离子发光的影响，对其发光机理进行了初步的探讨．