Room-temperature excitons in 1.6-μm band-gap GaInAs/AlInAs quantum wells

Weiner, J. S.; Chemla, D. S.; Miller, D. A. B.; Wood, T. H.; Sivco, D.; Cho, A. Y.
April 1985
Applied Physics Letters;4/1/1985, Vol. 46 Issue 7, p619
Academic Journal
The first observation of strong and well-resolved exciton peaks in the room-temperature absorption spectra of infrared band-gap multiple quantum well structures (MQW’s) is reported. Assignment of the optical resonances in the absorption spectra of GaInAs/AlInAs MQW’s yields the material parameters of this new heterojunction. The discontinuities of the conduction and valence bands are found to be ΔEc=0.44 eV and ΔEv=0.29 eV, respectively.


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