Patent ID: 7767604
Filing Date: 2010-08-03
Classification: C03C

Abstract:
1. A glass composition comprising, in atomic percent: 45 to 85 percent of S or of a combination of S and Se or a combination of S and Te or a combination of S, Se, and Te, wherein the percent of S is greater than or equal to the percent of Se, Te, or the combination of Se and Te; greater than 0 to 25 percent of Ga or of a combination of Ga and In, wherein the percent of In is less than or equal to 20 percent; greater than 0 to 20 percent P; 0 to 40 percent As; 0 to 15 percent Ge; 0 to 10 percent Sb; and 0 to 5 percent M, wherein M is selected from Sn, Tl, Pb, Bi and a combination thereof; wherein each percent is based on the total of S, Se, Te, Ga, In, P, As, Ge, Sb, and M atoms in the glass composition.