Crystals were grown, using the horizontal Bridgman method, under controlled ambient P-vapour pressures. The lattice parameter was measured by means of X-ray diffraction analysis. The lattice parameter of the crystals increased with increasing P vapour pressure. The relationship between the lattice parameter and the composition indicated that the In-rich composition was due to P vacancies. This corresponded to the photoluminescence spectra of P vacancy-related emissions.

Lattice Parameter Deviation of InP Single Crystals Grown by the Horizontal Bridgman Method under Controlled Phosphorus Vapour Pressure. A.Shimizu, J.Nishizawa, Y.Oyama, K.Suto: Japanese Journal of Applied Physics - 1, 2001, 40[4A], 2219-20