Effect of AlAs mole fraction on the integrated luminescence intensity of GaAs/AlxGa1-xAs quantum well heterostructures

Elias Towe; Docai C. Sun; R. H. Henderson

doi:10.1117/12.175731

11 May 1994 Effect of AlAs mole fraction on the integrated luminescence intensity of GaAs/Al_xGa_{1 - x}As quantum well heterostructures

Elias Towe, Docai C. Sun, R. H. Henderson

Author Affiliations +

Proceedings Volume 2139, Quantum Well and Superlattice Physics V; (1994) https://doi.org/10.1117/12.175731
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

The photoluminescent properties of GaAs/Al_xGa_{1 - x}As multiple quantum well structures grown on (100) GaAs substrates by molecular beam epitaxy have been investigated as a function of the AlAs mole fraction. It is found that as the AlAs mole fraction in the Al_xGa_{1 - x}As barriers is increased, the corresponding photoluminescent peak intensity of the quantum well structures increases and reaches a maximum at an AlAs mole fraction of about 45%. Further increases in the Al content of the barriers beyond 45% results into a decrease in the luminescence efficiency. At the maximum intensity, the peak luminescence from the quantum well structures is enhanced by about two orders of magnitude (at room temperature) when compared to the luminescence from such structures with an AlAs mole fraction of 20% in the barriers.

Citation Download Citation

Elias Towe, Docai C. Sun, and R. H. Henderson "Effect of AlAs mole fraction on the integrated luminescence intensity of GaAs/Al_xGa_{1 - x}As quantum well heterostructures", Proc. SPIE 2139, Quantum Well and Superlattice Physics V, (11 May 1994); https://doi.org/10.1117/12.175731

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