Advanced Science· 2026Q1
Modifying Electrochemical Doping in Light‐Emitting Electrochemical Cells With Gold Nanoparticles
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- Q1SCImago
- 2026year
Short summary
Gold nanoparticles (Au-NPs) at the anode interface of light-emitting electrochemical cells (LECs) reshape the electrochemically formed p-n junction, enabling control over the emission zone and boosting efficiency by up to 50% by enabling constructive optical interference.
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Key points
- Au nanoparticles incorporated at the anode interface of LECs act as a new control parameter for electrochemical doping.
- Au-NPs reshape the electrochemically formed p-n junction, which defines the emission zone in LECs.
- Non-capped Au-NPs shift the emission zone away from the anode, while citrate-capped Au-NPs shift it towards the anode.
- Repositioning the emission zone for constructive optical interference significantly increases LEC emission efficiency.
AI-generated from the title and abstract; the full text is not read.
Abstract
ABSTRACT Electrochemical doping enables dynamic control of organic semiconductors and underpins technologies such as electrochemical transistors, energy‐storage, bioelectronic, and light‐emitting devices. It is typically governed by the active‐material composition or the applied voltage. Here, we show that Au nanoparticles (Au‐NPs) incorporated at an electrode interface provide an additional control parameter. Using light‐emitting electrochemical cells (LECs) as a model system, we demonstrate that Au‐NPs at the anodic interface reshape the electrochemically formed p‐n junction, which defines the emission zone. Non‐capped Au‐NPs shift the emission zone away from the anode, whereas citrate‐capped Au‐NPs shift it toward the anode. By selecting the appropriate Au‐NP type, we reposition the emission zone closer to a region of constructive optical interference, leading to a strong increase in LEC emission efficiency. These results establish interfacial Au‐NPs as a strategy to modulate the spatial profile of electrochemical doping and tune the performance of organic electronic devices.
The authors' abstract, as published at the source. Advanced Science, 2026 · DOI ↗
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Field: Electrical and Electronic Engineering
Electrical and Electronic EngineeringEngineering