Yong Cai, Sanwan Liu, Huande Sun, Jianan Wang, Hasan Raza, You Gao, Zonghao Liu* and Wei Chen*,
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Suppressing Dewetting in Ultrathin Metal Films via SnOx Cladding Layer for Efficient Semitransparent Perovskite Solar Cells
Ultrathin metal films (UTMFs) are promising electrode candidates for semitransparent perovskite solar cells (St-PSCs). However, deposited UTMFs often exist in metastable or unstable states, leading to dewetting or aggregation at elevated temperatures, which compromises the stability of the St-PSCs. Here, we investigate the stability behavior of UTMFs in St-PSCs during operational conditions and discover that the solid-state dewetting of UTMFs can occur even at room temperature and atmospheric pressure. By introducing an additional tin oxide (SnOx) cladding layer on the top of UTMFs via atomic layer deposition (ALD), the stability of UTMFs and St-PSCs is significantly improved. Our St-PSCs with UTMFs/SnOx electrodes achieve a promising power conversion efficiency (PCE) of 20.1%. Encapsulated devices retain 95% of the initial efficiency after 500 h continuous operation under 1 sun illumination.
期刊介绍：
ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.
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