What is it about?
This paper reviews the development of metasurfaces in LEDs so far. Three aspects of light extraction, angle change, and polarization modulation are described in detail according to different applications of metasurfaces in LEDs. The current state of metasurface integration in LEDs is succinctly outlined, while offering insights into future development opportunities.
Featured Image
Photo by Mimicry Hu on Unsplash
Why is it important?
In LEDs, all the light emitted from the light-emitting layer, only a small portion of the outcoupling mode contributes to the EQE, and most of the light is lost through SPP mode, waveguide mode, substrate mode, and parasitic absorption losses. The working principle of the metasurface makes it possible to reduce these losses in LEDs, assisting in regulating the light extraction capacity and improving the EQE of the device.
Perspectives
This work conducted an in-depth analysis of the different working mechanisms of metasurfaces composed of different materials. Based on the different applications of metasurfaces in LEDs, three aspects were described in detail: light extraction, angle change, and polarization modulation. In general, this review is well organized and wide of interest for the researchers working on metasurfaces.
xinyi zeng
Read the Original
This page is a summary of: Recent progress of metasurfaces in light-emitting diodes, Applied Physics Reviews, June 2024, American Institute of Physics,
DOI: 10.1063/5.0201680.
You can read the full text:
Contributors
The following have contributed to this page
