We present cross-sectional scanning-tunneling microscopy results of threefo
ld stacked InAs quantum dots prepared by metal-organic chemical-vapor depos
ition at 485 degrees C and a growth rate of 0.18 nm/s. The dots consist of
stoichiometrically pure InAs and show a layer-dependent size. The images in
dicate a prismatic dot shape with {101} and additional {111} side faces as
well as a (001) top face. (C) 1999 American Institute of Physics. [S0003-69
51(99)04227-8].