Hybrid tandem perovskite-organic LED has been developed to achieve high external quantum efficiency, narrow linewidth, and extended device lifespan, which shows great promise for future perovskite-EL-based commercial applications.
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http://dx.doi.org/10.1038/s41377-024-01624-w | DOI Listing |
Light Sci Appl
January 2025
Executive Management College of CHN ENERGY, No.7 Binhe Avenue, North District of Future Science City, Changping District, Beijing, 102211, China.
In 2012, Prof. Henry Snaith demonstrated the first solid-state perovskite solar cell (PSC) with an efficiency of 10.9%, igniting a surge of interest and research into perovskite materials for their potential to revolutionize the photovoltaic (PV) industry.
View Article and Find Full Text PDFACS Appl Mater Interfaces
December 2024
Jihua Hengye Electronic Materials Co. Ltd., Foshan, Guangdong Province 528200, P. R. China.
Charge generation layers (CGLs) play crucial roles in determining the electroluminescence (EL) performance of tandem organic light-emitting diodes (OLEDs). However, acquiring negligible voltage drops across the CGL unit and high-efficiency multiplications remains challenging. Here, we propose barrier-free strategies to compose a high-performance p-i-n type CGL intermediate by introducing a Yb/HI-9 modification at the heterojunction and a novel n-dopant, Yb:1,3-bis(9-phenyl-1,10-phenanthrolin-2-yl)benzene (mdPPhen), as the n-CGL.
View Article and Find Full Text PDFNanoscale
December 2024
Centre for Nano and Soft Matter Sciences (CeNS), Arkavathi, Bengaluru-562162, India.
CsPbX (X = Cl, Br, I) perovskite nanocrystals (PNCs) undergo rapid anion exchange, allowing easy bandgap tuning across the entire visible range. However, despite being highly luminescent, the same facile anion exchange process poses significant challenges for their use in tandem optoelectronic devices and white light-emitting diodes (WLEDs). This anion exchange occurs primarily due to the dynamic nature of loosely bound oleylamine ligands on the surface of the PNCs.
View Article and Find Full Text PDFLight Sci Appl
October 2024
Department of Physics, Faculty of Science, Universiti Teknologi Malaysia, Johor Bahru, Malaysia.
Hybrid tandem perovskite-organic LED has been developed to achieve high external quantum efficiency, narrow linewidth, and extended device lifespan, which shows great promise for future perovskite-EL-based commercial applications.
View Article and Find Full Text PDFSmall
December 2024
Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing, Institute of Luminescent Materials and Information Displays, College of Materials Science and Engineering, Huaqiao University, Xiamen, Fujian, 361021, China.
In 2024, tandem perovskite light-emitting diodes (tandem-PLEDs) achieved a breakthrough external quantum efficiency of 43.42%, with an organic electroluminescence (EL) unit stacked atop a perovskite EL unit, surpassing the previous single-junction perovskite LEDs. This innovative design enables a higher brightness at lower currents, enhancing the longevity and efficiency of the tandem-PLEDs.
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