Buried Interface Modification Strategy for Efficient Tin‐Based Perovskite Light‐Emitting Diodes
Abstract 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)
- Xiaodong Shen (ORCID: https://orcid.org/0000-0003-3304-5371)
- Wing Chung Tsoi (ORCID: https://orcid.org/0000-0003-3836-5139)
- Ya Zhong (ORCID: https://orcid.org/0000-0002-9995-9662)
- 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
- Published
- 2025-06-11
- DOI
- https://doi.org/10.1002/ange.202507914
- Citations
- 2
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.46
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Jiangsu Province
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- National Key Research and Development Program of China