TY - EJOU AU - Fan, S. H. AU - Song, Y. S. AU - Hou, H. J. AU - Guo, H. L. AU - Zhang, S. R. TI - Theoretical Simulation of the Physical Properties of Solar Energy Material α-Cu2Se T2 - Chalcogenide Letters PY - 2025 VL - 22 IS - 12 SN - 1584-8663 AB - Using first-principles calculations, the physical behavior of α-Cu2Se are thoroughly examined. The computed structural parameters align closely with experimental data. Through computational analysis, the electronic properties for α-Cu2Se are determined. Additionally, mechanical characteristics-including bulk modulus B, shear modulus G, Young’s modulus E, and B/G are evaluated under varying pressure conditions. Furthermore, the optical properties are investigated. The study reveals that α-Cu2Se exhibits a direct bandgap of 0.782 eV, indicating its promising potential for optoelectronic applications. KW - α-Cu2Se; electronic structure; optical properties; elastic DO - 10.15251/CL.2025.2212.987