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Elastic constants and acoustical phonon properties of GaAsxSb1−x
TL;DR: In this paper, the elastic constants of zinc-blende GaAsxSb1−x are calculated from the framework of the pseudopotential method within the virtual crystal approximation combined with the bond-orbital model of Harrison.
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Raman scattering in AlxGa1−xN alloys
TL;DR: The Raman spectra of AlxGa1−xN epitaxial layers (0
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Energy band gaps for the GaxIn1−xAsyP1−y alloys lattice matched to different substrates
A. Bechiri,Nadir Bouarissa +1 more
TL;DR: In this paper, a pseudopotential formalism within the virtual crystal approximation in which the effects of composition disorder are involved is applied to the GaxIn1−xAsyP1−y quaternary alloys in conditions of lattice matching to GaAs, InP and ZnSe substrates so as to predict their energy band gaps.
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Effect of Halide Composition on the Photochemical Stability of Perovskite Photovoltaic Materials
Ravi K. Misra,Ravi K. Misra,Laura Ciammaruchi,Sigalit Aharon,D. Mogilyansky,Lioz Etgar,Iris Visoly-Fisher,Eugene A. Katz +7 more
TL;DR: The photochemical stability of encapsulated films of mixed halide perovskites with a range of MAPb(I1-x Brx )3 (MA=methylammonium) compositions (solid solutions) was investigated under accelerated stressing using concentrated sunlight and the crystal coherence length was found to correlate with the stability of the films.
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Modelling the coefficient of thermal expansion in Ni-based superalloys and bond coatings
TL;DR: In this paper, the authors used thermodynamic equilibrium software with an appropriate database for Ni-based alloys, whereas the CTE and elastic properties of the principal phases were modelled using published data.