Structural Engineering for Efficient Transparent Vacuum-Deposited Perovskite Light-Emitting Diodes toward Intelligent Display
Perovskite light-emitting diodes (PeLEDs) have attracted significant interest in next-generation intelligent displays. Vacuum deposition is a promising method for integrating PeLEDs into intelligent displays due to its high manufacturability and easy pixelation, as proven in industrial organic light-emitting diode production. However, achieving spatially confined grains with optimized crystal remains challenging in vacuum-deposited perovskite. Here, a trisource coevaporation strategy is proposed to introduce MABr to form the MA<sub><i>x</i></sub>Cs<sub>1-<i>x</i></sub>PbBr<sub>3</sub> structure with carriers' spatial confinement and defect suppression as well. This approach enables PeLEDs to contain excellent external quantum efficiency (EQE), which is nearly 10-fold as the untreated device. Based on this, we realize the first reported vacuum-deposited transparent PeLEDs with double-sided emission and an amazing maximum EQE of 7.6% by replacing Al with an optimized Ag:Mg electrode. These transparent PeLEDs are integrated into a bifunctional intelligent display device with both accurate heart rate detection and imaging display, which exhibit bright patterned emission and accurate heart rate detection.
Authors
- Jiajun Luo (ORCID: https://orcid.org/0000-0002-8358-5440)
- Haozhi Wang (ORCID: https://orcid.org/0000-0002-3543-2319)
- Zixi Shen
- Pei Du (ORCID: https://orcid.org/0000-0002-8277-8646)
- Enguo Chen (ORCID: https://orcid.org/0000-0001-9808-7252)
- Junhu Cai
- Xiang Zhang (ORCID: https://orcid.org/0000-0002-3272-894X)
- Nian Liu (ORCID: https://orcid.org/0000-0002-4108-7937)
- Jinghui Li (ORCID: https://orcid.org/0000-0003-0299-0637)
- Hao Chen (ORCID: https://orcid.org/0000-0002-3519-180X)
Institutions
- Hainan University (CN)
- Jianghan University (CN)
- Wuhan National Laboratory for Optoelectronics (CN)
- University of Chinese Academy of Sciences (CN)
- Huazhong University of Science and Technology (CN)
- Fuzhou University (CN)
Publication Details
- Journal
- ACS Applied Materials & Interfaces
- Published
- 2024-11-27
- DOI
- https://doi.org/10.1021/acsami.4c09719
- Citations
- 5
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.04
Funders
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- Natural Science Foundation of Hubei Province
- Ministry of Human Resources and Social Security
- Wuhan National Laboratory for Optoelectronics