eng Oriental Scientific Publishing Company Material Science Research India 0973-3469 2020-07-30 17 specialissue2020 07 12 16189 article Sriram Poyyapakkam Ramkumar 1 Research Associate, Department of Materials Science and Engineering, University of California, Merced, USA, 95343, In the search for sustainable alternate absorber materials for photovoltaic applications, the family of chalcogenides provide a promising solution. While the most commonly studied Cu₂ZnSnS₄ based kesterite solar cells seem to have intrinsic drawbacks such as low-efficiency arising from defects and anti-disorder in the Cu-Zn sites, substituting other elements in the Cu/Zn sites have been considered. In this direction, Cu₂(Ba,Sr)SnS₄ provide an interesting alternative as they possibly help limit the intrinsic anti-site disorder in the system which is of primary concern with regard to efficiency loses. In this study, we report the structural, vibrational, and electronic properties of trigonal structured Cu₂SrSnS₄ quarternary system computed from first-principles density functional theory paving way for further characterization and analysis within this class of materials. https://www.materialsciencejournal.org/specialissue2020/structural-vibrational-and-electronic-properties-of-trigonal-cu2srsns4-photovoltaic-absorber-from-first-principles-calculations/ Chalcogenides Density Functional Theory (DFT) Density Functional Perturbation Theory (DFPT) Photovoltaics (PV) Vibrational Properties