Highly efficient emerging Ag₂BaTiSe₄ solar cells using a new class of alkaline earth metal-based chalcogenide buffers alternative to CdS.

ABSTRACT: Cu₂ZnSn(S,Se)₄ is a non-toxic, earth-abundant photovoltaic absorber. However, its efficiency is limited by a large open circuit voltage (V_OC) deficit occurring due to its antisite defects and improper band alignment with toxic CdS buffer. Therefore, finding an absorber and non-toxic buffers that reduce V_OC deficit is crucial. Herein, for the first time, Ag₂BaTiSe₄ is proposed as an alternative absorber using SCAPS-1D wherein a new class of alkaline earth metal chalcogenide such as MgS, CaS, SrS, and BaS is applied as buffers, and their characteristics are compared with CdS to identify their potential and suitability. The buffer and absorber properties are elucidated by tuning their thickness, carrier concentration, and defec

SUBMITTER: Arockiya Dass KT 

PROVIDER: S-EPMC10794422 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature