Electronic Structure and Optical Properties of Alloy

Table 1

Lattice constants (Å) for ZB GaAs and GaAs_1−𝑥Bi_𝑥 alloys.

Composition	Our work	Theoretical studies	Experimental data
GaAs	5.734	5.75 [8], 5.75 [9], 5.764 [14], 5.75 [11]	5.65 [15], 5.653 [14]
GaAs0.9375Bi0.0625	5.763	—	—
GaAs0.875Bi0.125	5.811	5.85 [9]	—
GaAs0.8125Bi0.1875	5.844	—	—
GaAs0.75Bi0.25	5.895	5.97 [8], 5.94 [9], 6.20 [11]	—
GaAs0.5Bi0.5	6.064	6.16 [8], 6.12 [9], 6.32 [11]	—
GaAs0.25Bi0.75	6.209	6.32 [8], 6.30 [9], 6.37 [11]	—
GaBi	6.375	6.46 [8], 6.44 [9], 6.45 [11], 6.47 [10]	6.33 [16]