Charge capture by surface states in heat-oxidized germanium

It is shown that heat-oxidized germanium surfaces are distinguished by low density of fast surface states, low surface-recombination rates, and high stability. The dependence of the charge of heat-oxidized surface on heating temperature in vacuum is interpreted on the basis of the heterojunction model.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No.11, pp. 68–72, November, 1975.In conclusion the authors wish to thank V. F. Kiselev and Yu. F. Novototskii-Vlasov for useful discussions and valuable remarks.