Abstract
Data are presented showing that the interdiffusion of Ga and Al (AlGaAs-GaAs) and of Ga and In (pseudomorphic InGaAs-GaAs) at a heterojunction can be significantly enhanced or suppressed by controlling group III vacancies and interstitials. High resistivity low-temperature GaAs which contains excess As is shown to accelerate the interdiffusion process. The emission wavelength from monolayer-thick quantum wells can remain relatively unchanged even after annealing for 200 h at 850° C.
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Kolbas, R.M., Hwang, Y.L., Zhang, T. et al. Enhanced/suppressed interdiffusion of lattice-matched and pseudomorphic III–V heterostructures by controlling Ga vacancies. Opt Quant Electron 23, S805–S812 (1991). https://doi.org/10.1007/BF00624971
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DOI: https://doi.org/10.1007/BF00624971