Characterization of single-crystal diamond grown from the vapor phase on substrates of natural diamond

The results of studies of single-crystal diamond layers with orientation (100) grown on substrates of IIa-type natural diamond by chemical-vapor deposition and of semiconductor diamond obtained subsequently by doping by implantation of boron ions are reported. Optimal conditions of postimplantation annealing of diamond that provide the hole mobility of 1150 cm2 V−1 s−1 (the highest mobility obtained so far for semiconductor diamond after ion implantation) are given.