Bandgap engineering to tune the optical properties of BexMg1−xX(X = S, Se, Te) alloys

Bandgap engineering to tune the optical properties of Be_xMg_1−xX(X = S, Se, Te) alloys

Sabir B¹, Noor N A^{2, †}, Rashid M³, Din Fasih Ud⁴, Ramay Shahid M⁵, Mahmood Asif⁶

(color online) Direct bandgap variation (solid line) using WC-GGA and mBJGGA functionals for (a) Be_xMg_1−xS, (b) Be_xMg_1−xSe, and (c) Be_xMg_1−xTe alloys at x = 0.0, 0.25, 0.50, 0.75, and 1.0. Dotted lines represent the indirect bandgaps of Be_xMg_1−xX (X = S, Se, Te) alloys at x = 1.