ABSTRACT
As an important class of noncrystalline solids with a broad range of possible glass-forming systems and a large composition space, including nonstoichiometry possibility, chalcogenide (ChG) glasses have unique infrared-transmitting and infrared-semiconducting properties for practical applications in both military and civil ields [1] To extend transparency into the visible region, alkali halides have been introduced into the ChG system, producing the so-called chalcohalide (ChH) glasses. As halogen atoms from halides play a key role in ChH glasses by ixing the lone pair of electrons on the chalcogen atom (S, Se, Te), affording a considerably increased electronic bandgap [2], ChH glasses become more transparent in the visible region. This chapter focuses on recent work by our group on glass formation in some new ChG/ChH systems.
