It was demonstrated that GaN growth rate by MOVPE depended on the reac
tor pressure, inclined angle of slanted susceptor, and the temperature
gradient over substrate in the vertical direction, which were contrib
uted to the thermal convection in gas-phase. The growth process was co
ntrolled by mass transported limited, that can be classified into the
input rate limited and the diffusion limited, or their combination dep
ending on the configuration of reactor and the experimental conditions
. (C) 1997 Elsevier Science Ltd.