TY - JOUR
T1 - Efficient Near-Infrared Electroluminescence from Lanthanide-Doped Perovskite Quantum Cutters
AU - Yu, Yan-Jun
AU - Zou, Chen
AU - Shen, Wan-Shan
AU - Zheng, Xiaopeng
AU - Tian, Qi-Sheng
AU - Yu, You-Jun
AU - Chen, Chun-Hao
AU - Zhao, Baodan
AU - Wang, Zhao-Kui
AU - Di, Dawei
AU - Bakr, Osman
AU - Liao, Liang-Sheng
N1 - KAUST Repository Item: Exported on 2023-03-28
Acknowledgements: This work was supported by the National Natural Science Foundation of China (NSFC) (62175171,61961160731, 61975180, 62005243),the National Key R&D Program of China (grant no.2018YFB2200401), the Natural Science Foundation of Zhejiang Province (LR21F050003),Kun-Peng Program of Zhejiang Province (D.D.), Suzhou Key Laboratory of Functional Nano & Soft Materials, Collaborative Innovation Center of Suzhou Nano Science & Technology, the 111 Project, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices. This project is also funded by the Collaborative Innovation Center of Suzhou Nano Science and Technology (CIC-Nano), China and King Abdullah University of Science and Technology (KAUST).
PY - 2023/3/25
Y1 - 2023/3/25
N2 - Perovskite nanocrystals (PeNCs) deliver size and composition-tunable luminescence of high efficiency and color purity in the visible. However, attaining efficient electroluminescence (EL) in the near-infrared (NIR) region from PeNCs is challenging, limiting their potential applications. Here we demonstrate a highly efficient NIR light emitting diode (LED) by doping ytterbium ions into the PeNCs host (Yb3+:PeNCs), extending the EL wavelengths toward 1000 nm, which is achieved through a direct sensitization of Yb3+ ions by the PeNC host. Efficient quantum cutting processes enable high photoluminescence quantum yields (PLQYs) of up to 126% from the Yb3+:PeNCs. Through halide-composition engineering and surface passivation strategy to improve both PLQY and charge transport balance, we demonstrate an efficient NIR LED with a peak EQE of 7.7% at a central wavelength of 990 nm, representing the most efficient perovskite-based LEDs with emission wavelengths beyond 850 nm.
AB - Perovskite nanocrystals (PeNCs) deliver size and composition-tunable luminescence of high efficiency and color purity in the visible. However, attaining efficient electroluminescence (EL) in the near-infrared (NIR) region from PeNCs is challenging, limiting their potential applications. Here we demonstrate a highly efficient NIR light emitting diode (LED) by doping ytterbium ions into the PeNCs host (Yb3+:PeNCs), extending the EL wavelengths toward 1000 nm, which is achieved through a direct sensitization of Yb3+ ions by the PeNC host. Efficient quantum cutting processes enable high photoluminescence quantum yields (PLQYs) of up to 126% from the Yb3+:PeNCs. Through halide-composition engineering and surface passivation strategy to improve both PLQY and charge transport balance, we demonstrate an efficient NIR LED with a peak EQE of 7.7% at a central wavelength of 990 nm, representing the most efficient perovskite-based LEDs with emission wavelengths beyond 850 nm.
UR - http://hdl.handle.net/10754/690655
UR - https://onlinelibrary.wiley.com/doi/10.1002/anie.202302005
U2 - 10.1002/anie.202302005
DO - 10.1002/anie.202302005
M3 - Article
C2 - 36965042
SN - 1433-7851
JO - Angewandte Chemie (International ed. in English)
JF - Angewandte Chemie (International ed. in English)
ER -