Patent ID: 6162296
Filing Date: 2000-12-19
Classification: C23C,C30B,H01L,Y02E

Abstract:
An apparatus for manufacturing I-III-VI.sub.2 type chalcopyrite semiconductor thin films, comprising a heating element to heat a substrate by releasing a certain quantity of heat, a mechanism for measuring a temperature of the heated substrate, and a mechanism for controlling flux from evaporation sources of the film components with a change of the substrate temperature, wherein the apparatus is controlled to produce:a thin film of a first layer, of a second layer, and of a third layer, said first layer comprising at least one member selected from the group consisting of (A)-(F) on the heated substrate;(A) Group III elements and Group VI elements,(B) Group III-VI element compound,(C) Group I, III, and VI elements in stoichiometric amounts,(D) Group I-III-VI.sub.2 elements compound with a stoichiometric composition,(E) Group I, III, and VI elements in amounts containing excess Group III elements, and(F) Group I-III-VI.sub.2 element compound with a composition containing excess Group III elements;said second layer comprising at least one member selected from the group consisting of (a)-(d) on the first layer, in order to form a chalcopyrite semiconductor thin film with a composition containing excess Group I elements;(a) Group I elements and Group VI elements,(b) Group I-VI elements compound.(c) Group I, III, and VI elements in amounts containing excess Group I elements, and(d) Group I-III-VI.sub.2 elements compound with a composition containing excess Group I elements; andsaid third layer comprising at least one member selected from the group consisting of the (A)-(F) in order to form a chalcopyrite semiconductor thin film whose entire composition is stoichiometric or has excess Group III elements.