Interaction between copper and antimony in a solid solution based on germanium with the formation of a charged complex

A scheme of interaction between certain doping elements in solid solutions based on semiconductors is suggested; the scheme involves a reaction of for mation of a charged complex on the introduction of double-charged donors or acceptors into the solution. Analytical expressions for the dependence of the solubility of donors on the acceptor concentration and vice versa were derived using the formulas for the mass action law for reactions of ionizat ion of doping additives and interactions between them and taking into accou nt the electron-hole interaction and the conditions for the electroneutrali ty of the semiconductor. The obtained relationships were tested for a Ge-Cu -Sb system. It is shown that the values of solubility calculated by the sug gested theory and those obtained experimentally agree well with each other. (C) 2000 MAIK "Nauka/Interperiodica".