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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Application filed by Mitsubishi Electric CorpfiledCriticalMitsubishi Electric Corp
Priority to JP313077ApriorityCriticalpatent/JPS5388569A/en
Publication of JPS5388569ApublicationCriticalpatent/JPS5388569A/en
PURPOSE: To facilitate controlling of doping level through averting of the change in melt composition ratio owing to evaporation of an additive and impurity and prevent the oxidation of melt surface by charging the additive and impurity into the melt before contacting a semiconductor crystal substrate to the melt.