GaP nanocrystals was synthesized by high temperature high pressure benzene thermal synthesis method, the effect of reaction time on the particle size and its distribution was investigated by means of TEM and optical absorption spectrum measurement. The results indicated that as the time prolonged, a blue-shift became obviouse in the optical absorption spectra of the GaP benzene solution. The cause for this phenomenon was investigated in this paper and the experimental results supported our conclusion.

Key words: GALLIUM PHOSPHIDE, NANOPHASE MATERIALS, REACTION TIME, ABSORPTION SPECTRA