Recovery Mechanisms in Aged Kesterite Solar Cells.

ABSTRACT: For successful long-term deployment and operation of kesterites Cu₂ZnSn(S _x Se_1-x )₄ (CZTSSe) as light-absorber materials for photovoltaics, device stability and recovery in kesterite solar cells are investigated. A low-temperature heat treatment is applied to overcome the poor charge extraction that developed in the natural aging process. It is suggested that defect states at aged CZTSSe/CdS heterojunctions were reduced, while apparent doping density in the CZTSSe absorber increased due to Cd/Zn interdiffusion at the heterojunction during the annealing process. In situ annealing experiments in a transmission electron microscope were used to investigate the elemental diffusion at the CZTSSe/CdS heterojunction. This study reve

SUBMITTER: Campbell S 

PROVIDER: S-EPMC9131304 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature