We report on novel results from a systematic study of excitonic transitions in high quality metalorganic vapor phase epitaxy grown InxGa1−xAs/InP quantum wells (QWs). The electronic structure of the QWs has been studied as a function of QW width as well as the built-in strain. The characterization has been performed by means of a combined Fourier transform photoluminescence (FTPL) and FTPL excitation study of the InxGa1−xAs/InP QWs. Detailed information on the energy positions for the excitons associated with various subbands (for the electrons, heavy and light holes) up to n=5 have been obtained. The experimentally determined energy positions have been compared with theoretical predictions based on an effective mass model and bulk deformation potential theory.
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Dalfors et al. (1996) studied this question.