Two‐Step Inverted Perovskite Solar Cells with > 25% Efficiency Fabricated in Ambient Air

IF 24.4 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2025-04-05 DOI:10.1002/aenm.202500830

Guoxin Wu, Jiancun Wang, Xinzhuo Fang, Jiashuo Xu, Xinxin Xia, Jianwei Zhao, Liqiang Zheng, Maojie Zhang, Zhaolai Chen, Haibo Chen, Liang Wang, William W. Yu

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引用次数: 0

Abstract

The two‐step method for perovskite solar cells (PSCs) offers a promising technology for scalable manufacturing, particularly under ambient air conditions, due to its inherent simplicity, high reproducibility, and operational convenience. With this approach, achieving high‐quality of lead iodide (PbI2) films during the initial stage is paramount to ensuring the overall performance and stability of the devices. However, during the ambient fabrication of PbI2, the residual high boiling point and hygroscopic dimethyl sulfoxide (DMSO) solvent significantly compromises the resulting film quality. Here, L‐Homoarginine hydrochloride (HargCl) is introduced into the PbI2 precursor solution, which greatly reduced the residual amount of PbI2·xDMSO and passivated the internal defects of perovskite (PVK) films. By leveraging this strategy, inverted perovskite solar cells entirely in the air are successfully prepared, achieving an impressive power conversion efficiency (PCE) of 25.05% — the highest reported efficiency to date for two‐step fully air‐processed inverted PSCs. In addition, these unencapsulated devices maintained 96% of their initial power conversion efficiency after 500 h storage in the air with 20–40% RH.

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来源期刊

Advanced Energy Materials CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

41.90

自引率

4.00%

发文量

889

审稿时长

1.4 months

期刊介绍： Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small. With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics. The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.