Year: 2026
Type: article
Abstract: The impure phase in typical solution-processed two-dimensional/three-dimensional (2D/3D) perovskite heterostructures limit the performance and stability of perovskite solar cells. We overcome this limitation through a templated growth strategy utilizing excess lead iodide, which directs the formation of robust phase-pure 2D perovskite at the 3D perovskite surface. This strategy effectively suppresses phase segregation and ion interdiffusion at the 2D/3D perovskite interface, while promoting favorable energy alignment for charge extraction. The resulting 2D/3D devices achieved 26.8% efficiency (26.5% certified) and improved durability, retaining over 95% of their initial performance after 3000 h of continuous operation and maintaining nearly 100% of their initial performance throughout 90 days of outdoor testing, showcasing promising real-world stability.
Source: National Science Review
DOI: 10.1093/nsr/nwag574
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,000
Funders: National Natural Science Foundation of China, China Postdoctoral Science Foundation, Government of Jiangsu Province, Nanjing University of Aeronautics and Astronautics, Natural Science Foundation of Jiangsu Province, Nanjing University, Fundamental Research Funds for the Central Universities
OpenAlex ID: W7208724964