Pressure-dependent photoluminescence (PL) in several GaInP(ordered)-Ga
As quantum well structures grown by metal organic vapor phase epitaxy
is reported. Quantum well emission from GaAs is observed only in struc
tures when thin (similar to 2 nm) GaP layers an inserted between the G
aAs well and the GaInP barrier. By extrapolating the energies of the v
arious inter and intralayer PL transitions observed under pressures (u
p to 5.5 GPa) to zero pressure, the different band offsets of the hete
rostructure have been determined. (C) 1997 American Institute of Physi
cs.