The focus of this paper is to present the calculations of the band alignment of indium-rich (>53%) highly strained Ga1−xInxNyAs1−y quantum wells on InP substrates which allows an emission wavelength of the order of 2.3 µm. We concentrate on the band alignment of Ga0.22In0.78N0.01As0.99 wells lattice matched to In0.52Al0.48As barriers. Our calculations show that the incorporation of nitrogen into Ga1−xInxAs improves the band alignment significantly allowing Ga0.22In0.78N0.01As0.99/In0.52Al0.48As quantum wells on InP substrates to compete with the unique band alignment of GaInNAs/GaAs quantum wells on GaAs substrates.
Source:IOPscience
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