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journal article·2024-03Open access

Retarding Ion Migration for Stable Blade‐Coated Inverted Perovskite Solar Cells

Hongwei Zhu, Bingyao Shao, Jun Yin, Zhongjin Shen, Lijie Wang, Ren‐Wu Huang, Bin Chen, Nimer Wehbe, Taimoor Ahmad, Mutalifu Abulikemu, Aqil Jamal, Issam Gereige, Marina Freitag, Omar F. Mohammed, Edward H. Sargent, Osman M. Bakr

Advanced Materials· Volume 36· Issue 9
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Source abstract

Abstract

Abstract The fabrication of perovskite solar cells (PSCs) through blade coating is seen as one of the most viable paths toward commercialization. However, relative to the less scalable spin coating method, the blade coating process often results in more defective perovskite films with lower grain uniformity. Ion migration, facilitated by those elevated defect levels, is one of the main triggers of phase segregation and device instability. Here, a bifunctional molecule, p‐aminobenzoic acid (PABA), which enhances the barrier to ion migration, induces grain growth along the (100) facet, and promotes the formation of homogeneous perovskite films with fewer defects, is reported. As a result, PSCs with PABA achieved impressive power conversion efficiencies (PCEs) of 23.32% and 22.23% for devices with active areas of 0.1 cm2 and 1 cm2, respectively. Furthermore, these devices maintain 93.8% of their initial efficiencies after 1 000 h under 1‐sun illumination, 75 °C, and 10% relative humidity conditions.
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Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Light-Emitting Diodes Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Division of Physical Science and Engineering KAUST Catalysis Center (KCC) King Abdullah University of Science and Technology Thuwal 23955 Kingdom of Saudi Arabia

Department of Applied Physics The Hong Kong Polytechnic University Hong Kong 999077 P. R. China

School of Natural and Environmental Science Newcastle University Bedson Building Newcastle upon Tyne NE1 7RU UK

Division of Physical Science and Engineering Advanced Membranes and Porous Materials Center (AMPM) King Abdullah University of Science and Technology Thuwal 23955 Kingdom of Saudi Arabia

Department of Chemistry Northwestern University Evanston IL 60208 USA

The Imaging and Characterization Core Lab King Abdullah University of Science and Technology Thuwal 23955 Kingdom of Saudi Arabia

Saudi Aramco: Company General Use Dhahran 31311 Kingdom of Saudi Arabia

Funding

Saudi Aramco · King Abdullah University of Science and Technology · China Scholarship Council · Hong Kong Polytechnic University

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