Germanium Production in China

摘要

1 .Introduetion Germanium differs from other metals for its semieonducting ProPerties.The first major stud-ies of solid state Physies in utilizing semieondueting ProPerties were due Primarily to the availabili-ty of high Purity germanium.P一tyPe germanium erystal ean be obtained by doPing high Puritygermanium with 3 valenee element as indium,gallium or boron.Similarlyn一tyPe germanium erys-tal can be doPed with 5 valenee