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High-efficiency transparent air-processed perovskite LEDs enabled by size-dependent plasmonic enhancement
Hailong Wang1, Wenjie Bu1,2, Qilin Zheng1
1Institute of Physics, Henan Academy of Sciences, Zhengzhou, China. wanghailong@hnas.ac.cn.
Chemical Communications (Cambridge, England)
|July 7, 2026
Summary
Localized surface plasmon resonance from buried gold nanoparticles enhances light emission in transparent polymer light-emitting diodes (PeLEDs). Optimized PeLEDs demonstrate a record external quantum efficiency (EQE) of 20.25%.
Area of Science:
- Materials Science
- Nanotechnology
- Optoelectronics
Background:
- Localized surface plasmon resonance (LSPR) in nanoparticles can enhance light emission.
- Interface engineering is crucial for optimizing optoelectronic device performance.
Purpose of the Study:
- To investigate the effect of buried gold nanoparticles (Au NPs) on the performance of transparent polymer light-emitting diodes (PeLEDs).
- To optimize Au NP size and placement for enhanced radiative recombination and external quantum efficiency (EQE).
Main Methods:
- Fabrication of transparent PeLEDs with buried Au NPs at the NiOx interface.
- Tuning the size of Au NPs to control LSPR effects.
- Characterization of optical and electrical properties, including EQE measurements.
Main Results:
- Buried Au NPs induce size-dependent LSPR.
- Optimized 80 nm Au NPs provide strong near-field enhancement.
- Enhanced radiative recombination was observed without shifting the 535 nm emission peak.
- Air-processed transparent PeLEDs achieved a record total EQE of 20.25%.
Conclusions:
- Buried Au NPs are effective in enhancing the performance of transparent PeLEDs.
- Size-optimized Au NPs can significantly boost EQE by enhancing radiative recombination.
- The developed PeLEDs represent a significant advancement in high-efficiency, transparent display technology.
