Electronic, optical, and mechanical properties of AlxIn1−xP alloys under temperature and pressure

In this work, the optoelectronic and mechanical properties of Al x In 1−x P combinations in the zinc-blende structure were studied for different Al concentrations. The energy band gaps E g L , E g Γ , E g X , refractive index (n), high frequency and static dielectric constants (ɛ ∞ , ɛ o ), elastic parameters (C 11 , C 12 , C 44 ) were investigated. Other mechanical properties such as bulk (B u ), shear (C s ), Young’s (Y 0 ) moduli, Poisson ratio (σ), linear compressibility ( C o ) , Cauchy ( C a ) ratio, isotropy factor (A), bond stretching parameter ( α ) , bond-bending force parameter ( β ) , internal-strain parameter ( ξ ) , and the transverse effective charge ( e T ∗ ) were calculated. Also, the temperature and pressure dependences of these properties were studied. Our estimations were made with the empirical pseudo-potential method combined with the virtual crystal approximation incorporated the compositional disorder impact. There was a reasonable agreement between our determined outcomes and the accessible experimental values for the binary materials AlP and InP which give help for the consequences of the ternary combinations.