Glass formation and properties of Ge-Te-BiI3 far infrared transmitting chalcohalide glasses

► Firstly investigate a novel series of Ge-Te-BiI3 glass system ► Introduction of BiI3 into Ge-Te glass avoid volatility of I2 during synthesis ► Glass forming-ability and thermal stability are enhanced ► These glasses have wide optical transmission from 2.2 to 25 μm.