1.State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China
2.Department of Materials Science, Key Laboratory of Mobile Materials MOE, State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130012, China
3.Institute of Theoretical Chemistry and Laboratory of Theoretical & Computational Chemistry, Jilin University, Changchun 130023, China
Xiaoyu Zhang (zhangxiaoyu@jlu.edu.cn)
Bai Yang (byangchem@jlu.edu.cn)
纸质出版日期:2023-6-30,
网络出版日期:2023-5-15,
收稿日期:2023-1-15,
修回日期:2023-4-7,
录用日期:2023-4-9
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Rational adjustment to interfacial interaction with carbonized polymer dots enabling efficient large-area perovskite light-emitting diodes[J]. 光:科学与应用, 2023,12(6):1029-1039.
Yang, F. et al. Rational adjustment to interfacial interaction with carbonized polymer dots enabling efficient large-area perovskite light-emitting diodes. Light: Science & Applications, 12, 1129-1139 (2023).
Rational adjustment to interfacial interaction with carbonized polymer dots enabling efficient large-area perovskite light-emitting diodes[J]. 光:科学与应用, 2023,12(6):1029-1039. DOI: 10.1038/s41377-023-01150-1.
Yang, F. et al. Rational adjustment to interfacial interaction with carbonized polymer dots enabling efficient large-area perovskite light-emitting diodes. Light: Science & Applications, 12, 1129-1139 (2023). DOI: 10.1038/s41377-023-01150-1.
Film uniformity of solution-processed layers is the cornerstone of large-area perovskite light-emitting diodes
which is often determined by the 'coffee-ring effect'. Here we demonstrate a second factor that cannot be ignored is the solid-liquid interface interaction between substrate and precursor and can be optimized to eliminate rings. A perovskite film with rings can be formed when cations dominate the solid-liquid interface interaction; whereas smooth and homogeneous perovskite emitting layers are generated when anions and anion groups dominate the interaction. This is due to the fact that the type of ions anchored to the substrate can determine how the subsequent film grows. This interfacial interaction is adjusted using carbonized polymer dots
who also orient the perovskite crystals and passivate their buried traps
enabling a 225 mm
2
large-area perovskite light-emitting diode with a high efficiency of 20.2%.
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