Group‐VA Doped ZnO Injection Layer for Bright and Efficient Perovskite Light‐Emitting Diodes
Abstract Heteroatom doping of the ZnO electron injection layer (EIL) is widely applied to the fabrication of high‐performance quantum‐dot and perovskite light‐emitting diodes (PeLEDs), while group‐VA atomic dopant is rarely studied. Here, VA bismuth (Bi) with strong metallicity is screened as a substitution dopant to regulate the colloid size, surface terminal, and defect density of the ZnO precursor. The as‐fabricated Bi‐doped ZnO (ZnBiO) EIL shows enhanced conductivity, passivated trap states, more n‐type nature, and appropriate band alignment with FAPbI 3 (FA: formamidinium), contributing to smooth injection paths with minimal transport losses. Promoted by inhibited hydroxyl terminations of ZnBiO, the FAPbI 3 crystals grown into flat nanocylinder domains with higher crystallinity and area‐thickness ratio, leading to a champion PeLED efficiency of 22.3%, a high near‐infrared radiance of 684 W sr −1 m −2 , and nearly an order of magnitude extended operational stability, which shows great promise of ZnBiO as the optimal EIL for various LED application scenarios beyond classical ZnMgO.
Authors
- An Hu (ORCID: https://orcid.org/0000-0002-3577-9881)
- Xiaoyu Yang (ORCID: https://orcid.org/0000-0001-5840-4057)
- Qixuan Zhong (ORCID: https://orcid.org/0000-0001-5751-9565)
- Lichen Zhao (ORCID: https://orcid.org/0000-0003-2537-6963)
- Xinqiang Wang (ORCID: https://orcid.org/0000-0001-5514-8588)
- Shunde Li (ORCID: https://orcid.org/0000-0002-6954-0035)
- Jiang Wu (ORCID: https://orcid.org/0000-0002-9796-9533)
- Changjun Lu
- Yongqiang Ji (ORCID: https://orcid.org/0000-0002-0848-9643)
- Hong Li (ORCID: https://orcid.org/0000-0002-6975-7787)
- Yu Chen (ORCID: https://orcid.org/0000-0002-8206-3325)
- Le Li (ORCID: https://orcid.org/0000-0002-9340-9061)
- Rui Zhu (ORCID: https://orcid.org/0000-0001-7631-3589)
- Li Ma
- Qiuyang Li (ORCID: https://orcid.org/0000-0002-0002-8092)
- Yuzhuo Zhang (ORCID: https://orcid.org/0000-0002-8967-6749)
- Yanju Wang (ORCID: https://orcid.org/0000-0003-1939-9157)
- H. Chen (ORCID: https://orcid.org/0009-0005-6287-2618)
- Zhangyuchang Lu
Institutions
- Nanyang Technological University (SG)
- Shanxi University (CN)
- Shaanxi University of Technology (CN)
- Chinese Academy of Sciences (CN)
- Peking University (CN)
- Henan Academy of Sciences (CN)
- Collaborative Innovation Center of Quantum Matter (CN)
- Institute of High Energy Physics (CN)
- Institute of Physics (CN)
- Beijing University of Chemical Technology (CN)
Publication Details
- Journal
- Advanced Functional Materials
- Published
- 2024-11-10
- DOI
- https://doi.org/10.1002/adfm.202413517
- Citations
- 9
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.88
Funders
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- Natural Science Foundation of Beijing Municipality
- Beijing Nova Program
- National Key Research and Development Program of China