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Towards highly efficient and highly transparent OLEDs: advanced considerations for emission zone coupled with capping
Optics Express
|October 20, 2015
Summary
This study presents strategies for efficient transparent organic light-emitting diodes (TrOLEDs). By optimizing emission zone position, high external quantum efficiency and transmittance were achieved simultaneously in TrOLED devices.
Area of Science:
- Materials Science
- Optoelectronics
- Solid State Physics
Background:
- Transparent organic light-emitting diodes (TrOLEDs) are crucial for advanced display and lighting applications.
- Achieving high efficiency and transparency simultaneously in TrOLEDs remains a significant challenge.
Purpose of the Study:
- To develop strategies for enhancing the efficiency of transparent organic light-emitting diodes.
- To simultaneously achieve high external quantum efficiency and high transmittance in TrOLED devices.
Main Methods:
- Careful adjustment of the emission zone position by monitoring optical phase change upon reflection.
- Accounting for surface plasmon polariton (SPP) loss from thin metal electrodes.
Main Results:
- Demonstrated simultaneous external quantum efficiency (EQE) of 15% and transmittance of 80%.
- Accurate description of TrOLED efficiency scaling behavior with respect to optical design parameters.
Conclusions:
- The proposed design strategy effectively enhances TrOLED performance.
- Optimizing emission zone position and considering SPP losses are key for efficient TrOLEDs.
