First-Principles Investigation of Concentration Effects on the Electronic and Vibrational Properties of a Boron Aluminum Phosphide Alloy with Wurtzoid Nanostructure

The vibrational and electronic properties of the binary wurtzoids Al₇P₇and B₇P₇ and the ternary one B𝑥Al7−𝑥P7 have been investigated by the use of the approximation of the Density Functional Theory (DFT). By varying the concentration 𝑥, we carried out the calculations and various simulations of the bond lengths, energy gap, density of states, force constants, reduced masses, and infrared and Raman spectra. The geometric nanostructure of B_xAl_7-xl P₇ wurtzoid has been analyzed using the Gauss view 05 program. As the concentration of B increases,the energy gap widens, indicating that the estimations are consistent with the experimental longitudinal optical measurements. We utilize the theoretical ab initio technique to mimic the properties and nanostructures of B𝑥Al7−𝑥P7wurtzoid using DFT B3LYP with the 6-311-G**basis sets and the GGA calculations with all electrons. (author)