Abstract
Photoluminescence spectra and efficiency have been measured for several strained InAsyP1−yInxGa1−xAs (0.28 < y ≤ 0.62; 0.66 ≤ x ≤ 0.83) double heterostructures grown by vapor phase epitaxy on InP substrates with graded InAsP buffer layers. Luminescence peak positions between the wavelengths of 1.99 and 2.57 (μm at a temperature of 295K are consistent with bandgap luminescence from the InxGa1−xAs active regions. Despite a high density of dislocations in the buffer layers, internal radiative recombination efficiencies of from 25 to 50% for the structures are found at 295K.
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Garbuzov, D., Kim, D.S., Forrest, S.R. et al. Efficient 2.0–2.6 μm wavelength photoluminescence from narrow bandgap InAsP/InGaAs double heterostructures grown on InP substrates. J. Electron. Mater. 25, 1501–1505 (1996). https://doi.org/10.1007/BF02655390
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DOI: https://doi.org/10.1007/BF02655390