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Publication # 045

J. S. Weiner, D. S. Chemla, D. A. B. Miller, T. H. Wood, D. Sivco and A. Y. Cho, "Room-temperature Excitons in 1.6 band-gap GaInAs/AlInAs Quantum Wells" Appl. Phys. Lett. 46, 619-621 (1985).

The first observation of strong and well-resolved exciton peaks in the room-temperature absorption spectra of infrared band-gap multiple quantum well structures (MQWs) is reported. Assignment of the optical resonances in the absorption spectra of GaInAs/AlInAs MQWs yields the material parameters of this new heterojunction. The discontinuities of the conduction and valence bands are found to be Delta E/sub c/=0.44 eV and Delta E/sub nu /=0.29 eV, respectively

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