Metal chalcogenide electron extraction layers for nip-type tin-based perovskite solar cells.

ABSTRACT: Tin-based perovskite solar cells have garnered attention for their biocompatibility, narrow bandgap, and long thermal carrier lifetime. However, nip-type tin-based perovskite solar cells have underperformed largely due to the indiscriminate use of metal oxide electron transport layers originally designed for nip-type lead-based perovskite solar cells. Here, we reveal that this underperformance is caused by oxygen vacancies and deeper energy levels in metal oxide. To address these issues, we propose a metal chalcogenide electron transport layer, specifically Sn(S_0.92Se_0.08)₂, which circumvents the oxygen molecules desorption and impedes the Sn²⁺ oxidation. As a result, tin-based perovskite solar cells with Sn(S_0.92Se_0.08)

SUBMITTER: Li T 

PROVIDER: S-EPMC11530694 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature