Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Perovskite light-emitting diodes (PeLEDs) have emerged as promising candidates for lighting and display technologies owing to their high photoluminescence quantum efficiency and high carrier mobility. However, the performance of planar PeLEDs is limited by the out-coupling efficiency, predominantly governed by photonic losses at device interfaces. Most notably, the plasmonic loss at the metal electrode interfaces can account for up to 60% of the total loss. Here, we investigate the use of plasmonic nanostructures to improve the light out-coupling in PeLEDs. By integrating these nanostructures with PeLEDs, we have demonstrated an effectively reduced plasmonic loss and enhanced light out-coupling. As a result, the nanostructured PeLEDs exhibit an average 1.5-fold increase in external quantum efficiency and an ∼20-fold improvement in device lifetime. This finding offers a generic approach for enhancing light out-coupling, promising great potential to go beyond existing performance limitations.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.nanolett.3c03483 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Regular Tandem Quantum Dot Light-Emitting Diodes with over 51% External Quantum Efficiency for Next-Generation Displays.
Adv Mater
August 2025
Guangxi Key Laboratory of Processing for Non-ferrous Metals and Featured Materials, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University, Nanning, 530004, China.
Despite excellent efficiency and stability achieved in regular single-unit quantum dot light-emitting diodes (QLEDs), regular tandem QLEDs still suffer from limited device performance, lagging far behind the inverted tandem QLEDs. Here, novel regular tandem QLEDs are demonstrated with an ultrathin (≈4 nm) indium tin oxide (ITO) charge generation layer (CGL). Through systematic optimization of charge injection balance and light out-coupling efficiency, the resulting tandem QLEDs can exhibit a record-breaking EQE of 51.
View Article and Find Full Text PDFMicrocavity-Enhanced Directional Electrochemiluminescence Output from Single Molecular Crystals.
J Am Chem Soc
August 2025
State Key Laboratory of Soil Pollution Control and Safety, Zhejiang Key Laboratory of Excited-State Energy Conversion and Energy Storage, Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, P. R. China.
Molecular crystal-based electrochemiluminescence (ECL) waveguides can output directional optical signal. However, an optical loss still exists, suppressing the output strength. Herein, we report an approach of achieving enhanced ECL output by ingeniously designing microrod-shaped molecular crystals with microcavities at both terminals, termed as mMCs.
View Article and Find Full Text PDFThe realization of linearly polarized emissions in organic light-emitting diodes has emerged as a significant research focus, driven by its potential for advanced display and optical applications. However, conventional approaches for generating polarized light often involve complex out-coupling structures or mechanical treatments that may reduce device efficiency and pose difficulties in large-area fabrication. In this study, we introduce a strategy utilizing a metasurface mirror as the bottom reflector to enable high-efficiency polarized light emission.
View Article and Find Full Text PDFPseudo-4D Printing of Microbubble Arrays in Quantum Dot-Doped Polymer Films for Effective Light Extraction.
Nano Lett
July 2025
MOE Key Laboratory of Cluster Science, Beijing Key Laboratory of Construction-Tailorable Advanced Functional Materials and Green Applications, MIIT Key Laboratory of Medical Molecule Science and Pharmaceutical Engineering, School of Chemistry and Chemical Engineering, School of Materials Science & E
Quantum dots (QDs) with excellent optical properties are rapidly emerging as promising materials for the construction of photonic devices and systems. However, the light generated within QD-based devices always suffers from limited light out-coupling efficiency due to photon trapping effects caused by successive total internal reflection and waveguide losses at the edge. This study introduces a pseudo-4D printing strategy to construct microbubble arrays to tackle light trapping in QDs films.
View Article and Find Full Text PDFAn Anthracene Derivative with a Highly Vertical Molecular Orientation.
J Phys Chem Lett
May 2025
RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
Controlling the orientation of the transition dipole moment (TDM) is very important in the field of optoelectronics. In particular, the horizontal orientation of emissive TDMs in organic materials has been extensively studied because it can improve the out-coupling efficiency of organic light-emitting diodes (OLEDs). Conversely, the vertical orientation of emissive TDMs remains virtually unexplored.
View Article and Find Full Text PDF