We have independently estimated the conduction- and valence-band offsets ΔEc and ΔEv in GaAs/Ga0.51In 0.49P quantum wells by measuring the capacitance transient resulting from thermal emission of carriers from the respective wells. The heterostructure samples were grown by low-pressure metalorganic chemical vapor deposition. The band offsets are extrapolated from the emission activation energies with appropriate corrections. The estimated values of ΔEc and ΔEv are 0.198 and 0.285 eV, respectively.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)