Ⅰ. INTRODUCTION From the measurements of the junction-space-charge techniques, electron spin resonance, optical absorption, photoluminescence and others, it has been proved that Fe atom in GaP and GaAs compounds subs...Ⅰ. INTRODUCTION From the measurements of the junction-space-charge techniques, electron spin resonance, optical absorption, photoluminescence and others, it has been proved that Fe atom in GaP and GaAs compounds substitutionally occupies the Ga site and forms a deep acceptor level. The isolated Fe center seems to have Td symmetry and is Fe3+ (3d5) in its neutral state, but Fe2+ (3d6) after accepting an electron from展开更多
基金Project supported by the National Natural Science Foundation of China
文摘Ⅰ. INTRODUCTION From the measurements of the junction-space-charge techniques, electron spin resonance, optical absorption, photoluminescence and others, it has been proved that Fe atom in GaP and GaAs compounds substitutionally occupies the Ga site and forms a deep acceptor level. The isolated Fe center seems to have Td symmetry and is Fe3+ (3d5) in its neutral state, but Fe2+ (3d6) after accepting an electron from