M. Suhara et al., ATOMICALLY FLAT OMVPE GROWTH OF GAINAS AND INP OBSERVED BY AFM FOR LEVEL NARROWING IN RESONANT-TUNNELING DIODES, Journal of crystal growth, 179(1-2), 1997, pp. 18-25
The topography of InP and Ga0.47In0.53As surfaces grown by organometal
lic vapor phase epitaxy (OMVPE) was investigated using atomic force mi
croscopy (AFM). Monolayer steps with atomically flat terraces, several
hundred nanometers width, were formed for both InP and GaInAs. The bo
undary growth condition between step flow mode and 2D-nucleation mode
was studied for InP and GaInAs, respectively. Applying step flow mode
to the growth of GaInAs/InP resonant tunneling diodes, a remarkable re
duction of the energy level width fom 51 to is meV was observed.