Silicon doping in InP grown by molecular beam epitaxy

Abstract
Silicon‐doped InP layers were grown on (100) InP substrates by molecular beam epitaxy (MBE), and compared with MBE grown Sn‐doped InP layers. Room‐temperature electron concentrations up to ∼1×1019 cm3 were successfully achieved with good doping controllability. The electrical optical properties of Si‐doped InP layers were comparable with those of Sn‐doped InP layers. These results show that Si is a useful n‐type dopant in MBE growth of InP layers, especially to obtain abrupt doping profiles.