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Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes
Published on: November 16, 2018
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Short-Wavelength Infrared Organic Light-Emitting Diodes from Solution-Processable Aggregation-Induced Emission
Yuhang Xu1, Daming Zhou1, Wanyuan Deng1,2
1Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China.
ACS Applied Materials & Interfaces
|February 18, 2026
Summary
High-performance short-wavelength-infrared (SWIR) organic light-emitting diodes (OLEDs) were developed using aggregation-induced emission (AIE) molecules. These flexible and biocompatible SWIR OLEDs show promise for advanced applications.
Area of Science:
- Materials Science
- Organic Electronics
- Photonics
Background:
- Short-wavelength-infrared (SWIR) organic light-emitting diodes (OLEDs) offer mechanical flexibility and biocompatibility for applications like bioimaging and sensors.
- Current SWIR OLEDs suffer from low luminescence efficiency due to aggregation-caused emission quenching in pure organic semiconductors.
Purpose of the Study:
- To develop high-performance SWIR OLEDs utilizing solution-processable aggregation-induced emission (AIE) molecules.
- To enhance device performance by optimizing the exciton generation zone and improving charge balance and light outcoupling.
Main Methods:
- Incorporation of AIE molecules as the emitting layer in SWIR OLEDs.
- Introduction of an electron-blocking layer to tailor the exciton generation zone.
- Device fabrication and characterization of optoelectronic properties and operational stability.
Main Results:
- Achieved SWIR OLEDs with an emission peak at 1000 nm.
- Demonstrated a maximum external quantum efficiency of 0.10% and radiant exitance of 3.41 mW cm⁻².
- Exhibited a stable operational half-lifetime of 2 hours at high current density (2200 mA cm⁻²) in ambient air.
Conclusions:
- Solution-processable AIE molecules enable high-performance SWIR OLEDs.
- The developed SWIR OLEDs show stable characteristics suitable for practical applications.
- This work lays the foundation for a new generation of SWIR OLEDs with diverse application potential.
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