ETCHING METHOD FOR ZNSE POLYCRYSTALLINE SUBSTRATE

摘要

When applying reactive ion etching on a ZnSe polycrystalline substrate, reactive gas used therefor is only chlorine-based gas which does not include a hydrocarbon group. Or the reactive gas is gas prepared by mixing chlorine- based gas which does not include a hydrocarbon group with other gas. The other gas is inert gas or gas which does not react to ZnSe. BCl3 gas is one kind of chlorine-based gas. Ar gas is one kind of inert gas. RF power is one mean s for activating the gas.