Статья

Stabilizing perovskite-substrate interfaces for high-performance perovskite modules

Shangshang ChenDepartment of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC 27599, USAXuezeng DaiDepartment of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC 27599, USAShuang XuDepartment of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC 27599, USAHaoyang JiaoDepartment of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC 27599, USALiang ZhaoDepartment of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC 27599, USAJinsong HuangDepartment of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC 27599, USA

2021en

ABI

Аннотация

The interfaces of perovskite solar cells (PSCs) are important in determining their efficiency and stability, but the morphology and stability of imbedded perovskite-substrate interfaces have received less attention than have top interfaces. We found that dimethyl sulfoxide (DMSO), which is a liquid additive broadly applied to enhance perovskite film morphology, was trapped during film formation and led to voids at perovskite-substrate interfaces that accelerated the film degradation under illumination. Partial replacement of DMSO with solid-state carbohydrazide reduces interfacial voids. A maximum stabilized power conversion efficiency (PCE) of 23.6% was realized for blade-coated p-type/intrinsic/n-type (p-i-n) structure PSCs with no efficiency loss after 550-hour operational stability tests at 60°C. The perovskite mini-modules showed certified PCEs of 19.3 and 19.2%, with aperture areas of 18.1 and 50.0 square centimeters, respectively.

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Идентификаторы

DOI: 10.1126/science.abi6323

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar