Abstract
We demonstrated that amorphous photonic crystals can effectively improve the light extraction efficiency of GaN-based light-emitting diodes (LEDs) by the Anderson localization effect. The finite-difference time-domain method was employed to analyze the frequency dependence of the light localization characteristics in the amorphous photonic crystals structure. Numerical studies revealed that the localization modes become most efficient at certain frequencies, owing to the confinement by short-range order. With the action of these strong localization modes, the light that propagated in the horizontal direction was redirected and propagated in the <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">${\rm z}$</tex></formula> -direction. Compared with conventional LEDs, significant enhancement of the light extraction efficiency (5.83 times) was achievable from amorphous photonic crystals LEDs with optimized structural parameters. Finally, we analyzed the physical mechanisms by which amorphous photonic crystals can effectively improve light extraction.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
