BIPOLAR TRANSISTORS (ELECTRONICS); EPITAXIALSCHICHTEN (PHYSIK VON MOLEKULARSYSTEMEN); BIPOLARE TRANSISTOREN (ELEKTRONIK); GALLIUM ARSENIDE DEVICES (ELECTRONICS); INDIUMPHOSPHID (ANORGANISCHE CHEMIE); HETEROJUNCTION + HETEROSTRUCTURE (CRYSTALLOGRAPHY); INDIUM PHOSPHIDES (INORGANIC CHEMISTRY); THIN LAYER FORMATION BY VAPORIZATION AND CONDENSATION (PHYSICS OF MOLECULAR SYSTEMS); GALLIUMARSENID-BAUELEMENTE (ELEKTRONIK); HETEROKONTAKT + HETEROSTRUKTUR (KRISTALLOGRAPHIE)