Field-effect passivation for minimized voltage loss in highly efficient antimony selenosulfide solar cells.

ABSTRACT: The inferior heterojunction quality and misaligned energy levels at the buffer/absorber interface cause severe interface recombination and large open-circuit voltage (V_OC) loss, limiting the power conversion efficiency (PCE) of antimony selenosulfide (Sb₂(S,Se)₃) solar cells. Here, we develop a field-effect passivation strategy by introducing a low-work-function Ta₂O₅ dielectric layer between the CdS and Sb₂(S,Se)₃ layers. This Ta₂O₅ layer serves as an optimal substrate for growing highly crystalline Sb₂(S,Se)₃ films while also enhancing interfacial charge transport. The positive fixed charges in Ta₂O₅ strengthen the built-in electric field and prom

SUBMITTER: Gong A 

PROVIDER: S-EPMC12775381 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature