Buried Interface Modification Strategy for Efficient Tin‐Based Perovskite Light‐Emitting Diodes
Tin (Sn)-based perovskites show great potential for environmentally friendly and high-performance light-emitting diodes (LEDs). However, the development of Sn-based perovskite LEDs (PeLEDs) lags significantly behind that of lead-based perovskites. This is mainly due to the faster crystallization rate of Sn-based perovskites that leads to a higher defect density in Sn-based perovskite films, thereby serious nonradiative recombination. Here, we demonstrated a buried interface modification (BIM) strategy to regulate the crystallization kinetics of Sn-based perovskite films by using carboxylate as multifunctional surface modifiers. We reveal that the buried interface is critical to improve the nucleation and crystallization of Sn-based perovskite films. As a result, efficient near-infrared Sn-based PeLEDs were achieved with an external quantum efficiency (EQE) of 11.9%. This work suggests an efficient and elegant route to obtain high-performance Sn-based perovskite films and devices.
Authors
- Weidong Xu (ORCID: https://orcid.org/0000-0002-3934-8579)
- Yangyu Liu (ORCID: https://orcid.org/0000-0003-4184-5379)
- Sai Bai (ORCID: https://orcid.org/0000-0001-7623-686X)
- Chunxiong Bao (ORCID: https://orcid.org/0000-0001-7076-7635)
- Wei Wang (ORCID: https://orcid.org/0000-0001-8016-7502)
- Wing Chung Tsoi (ORCID: https://orcid.org/0000-0003-3836-5139)
- Ya Zhong (ORCID: https://orcid.org/0000-0002-9995-9662)
- Xiaodong Shen
- Hongyao Ding (ORCID: https://orcid.org/0000-0003-1209-4182)
- Wenbin Wang (ORCID: https://orcid.org/0000-0002-7043-7449)
- Changyuan Yu (ORCID: https://orcid.org/0000-0002-3185-0441)
- Zheng Jiang (ORCID: https://orcid.org/0009-0004-7051-2391)
- Jing Xu (ORCID: https://orcid.org/0009-0001-4504-3616)
- Jie Yang (ORCID: https://orcid.org/0000-0001-7514-5165)
- Haifeng Zhao (ORCID: https://orcid.org/0000-0001-5729-1257)
- Yuhan Zhou (ORCID: https://orcid.org/0000-0002-6657-7617)
- Pengpeng Teng (ORCID: https://orcid.org/0000-0003-3063-0153)
Institutions
- Nanjing Tech University (CN)
- University of Electronic Science and Technology of China (CN)
- Northwestern Polytechnical University (CN)
- Swansea University (GB)
- Silicon Chemical (United States) (US)
- Division of Materials Science and Engineering (AU)
- Collaborative Innovation Center of Advanced Microstructures (CN)
- The Synergetic Innovation Center for Advanced Materials (CN)
- Nanjing University (CN)
Publication Details
- Journal
- Angewandte Chemie International Edition
- Published
- 2025-06-11
- DOI
- https://doi.org/10.1002/anie.202507914
- Citations
- 7
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 5.11
Funders
- National Natural Science Foundation of China
- Government of Jiangsu Province
- Natural Science Foundation of Jiangsu Province
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- National Key Research and Development Program of China