Patent ID: 9040177
Filing Date: 2015-05-26
Classification: B32B,C03C,C04B,H01L

Abstract:
1. A dopant host characterized in that it comprises a laminate including a boron component vaporization layer having a composition comprising 30-60% by mole of SiO 2 , 10-30% by mole of Al 2 O 3 , 15-50% by mole of B 2 O 3 and 2-10% by mole of RO, wherein R denotes an alkaline earth metal, and a heat resistant layer having a composition comprising 8-30% by mole of SiO 2 , 50-85% by mole of Al 2 O 3 , 5-20% by mole of B 2 O 3 and 0.5-7% by mole of RO, wherein R denotes an alkaline earth metal.