Method for fabricating an AlGaInP semiconductor light emitting device including the step of removing an oxide film by irradiation with plasma beams and an As or P molecular beam

A method for fabricating an AlGaInP semiconductor light emitting device having a substrate and a multilayer structure including an AlGaInP first semiconductor layer formed on the substrate, the method comprising the steps of:

• removing part of the multilayer structure so that the first semiconductor layer is exposed;
• irradiating with plasma beams an oxide film formed on the exposed first semiconductor layer with the substrate temperature being kept at 500.degree. C. or less, so as to remove the oxide film from the first semiconductor layer;
• and
• growing a second semiconductor layer on the first semiconductor layer;
• wherein a molecular beam selected from the group consisting of As molecular beams and P molecular beams is used to irradiate the oxide film simultaneously with the step of irradiating the oxide film with the plasma beams.