All-site alloyed perovskite for efficient and bright blue light-emitting diodes
Perovskite light-emitting diodes have drawn great attention in the fields of displays and lighting, especially for applications requiring high efficiency and high brightness. While three-dimensional perovskite light-emitting diodes hold promise for achieving higher brightness compared to low-dimensional counterparts, efficient blue three-dimensional perovskite light-emitting diodes have remained a challenge due to defect formation during the disordered crystallization of multiple A-cation perovskite. Here we demonstrate an all-site alloy method that enables sequential A-site doping growth of formamidinium and cesium hybrid perovskite. This approach significantly reduces the trap density of the perovskite film by approximately one order of magnitude. Consequently, we achieve efficient and bright blue perovskite light-emitting diode with an external quantum efficiency of 23.3%, a luminous efficacy of 33.4 lm W<sup>-1</sup>, and a luminance of approximately 5700 cd m<sup>-2</sup> for the emission with a peak at 487 nm. This work provides a strategy for growing high-quality multicomponent perovskite for optoelectronics.
Authors
- Ruishan Wang (ORCID: https://orcid.org/0000-0002-3259-9615)
- Chenjie Hao
- Chen Xue (ORCID: https://orcid.org/0000-0002-0462-9637)
- Jianpu Wang (ORCID: https://orcid.org/0000-0002-2158-8689)
- Gunnar Kusch (ORCID: https://orcid.org/0000-0003-2743-1022)
- Rachel A. Oliver (ORCID: https://orcid.org/0000-0003-0029-3993)
- Wei Huang (ORCID: https://orcid.org/0000-0001-7004-6408)
- Nana Wang (ORCID: https://orcid.org/0000-0003-2098-5778)
- Yu Chen (ORCID: https://orcid.org/0000-0001-9669-2475)
- Hai Li (ORCID: https://orcid.org/0000-0002-9659-1153)
- Lin Zhu (ORCID: https://orcid.org/0000-0001-7490-4182)
- Lu Cheng
- Jingmin Wang (ORCID: https://orcid.org/0000-0001-8994-0389)
- Bo Xu (ORCID: https://orcid.org/0000-0003-2758-7772)
Institutions
- Fujian Normal University (CN)
- Nanjing Tech University (CN)
- Northwestern Polytechnical University (CN)
- University of Cambridge (GB)
- Changzhou University (CN)
- Anhui University of Technology (CN)
Publication Details
- Journal
- Nature Communications
- Published
- 2025-04-05
- DOI
- https://doi.org/10.1038/s41467-025-58470-6
- Citations
- 33
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 24.10
Funders
- National Natural Science Foundation of China
- Chinese Academy of Sciences
- Government of Jiangsu Province
- Natural Science Foundation of Jiangsu Province
- Engineering and Physical Sciences Research Council
- Suzhou Institute of Nanotechnology, Chinese Academy of Sciences
- National Key Research and Development Program of China