An investigation on the dependence of photoluminescence in Bi2O3-doped GeO2 glasses on controlled atmospheres during melting

作者：Jiang, Xin; Jha, Animesh^*

来源：Optical Materials, 2010, 33(1): 14-18.

DOI：10.1016/j.optmat.2010.07.011

• Bi2O3-doped germanate glasses
• Photoluminescence
• Oxidizing atmosphere

We have investigated the influence of a range of melting atmospheres on the control of the photo-active Bi-ion states in a Bi2O3-doped germanate glass, having a molar composition of 70GeO(2)-18Li(2)O-11Ga(2)O(3)-1Bi(2)O(3). The atmosphere during melting was controlled by purging with pure oxygen, air, and nitrogen. The melting temperatures investigated were in the range of 1200 to 1450 degrees C. The UV-visible absorbance and the photoluminescence (PL) spectroscopic characterizations in the visible (600-800 nm) and near-IR (1000-1500 nm) regions were carried out for determining the contributions of potential Bi-ion states on the absorbance and PL. The PL properties of undoped GeO2 glass were also compared for the analysis of potential defects states present in the structure.

• 出版日期2010-11