Photonic crystal phosphors for efficient color conversion in micro-LED applications
This study presents a three-dimensional (3D) photonic crystal (PhC) phosphor film designed to enhance color conversion efficiency in micro-LED displays. By leveraging photonic band-edge (PBE) resonance effects, the PhC structure localizes excitation photons, enhancing light–matter interaction and thus increasing absorption efficiency. Experimental results show a 1.5-fold increase in fluorescence intensity when the 3D PhC phosphor is integrated with blue micro-LEDs (λ<sub>peak</sub> = 450nm) compared to conventional bulk phosphor films. Furthermore, the enhancement remains consistent for micro-LED sizes ranging from 6 to 100μm, confirming the scalability of the approach. This versatile PhC phosphor design can also be extended to other luminescent materials, offering a robust platform for advanced display technologies.
Authors
- Kyungtaek Min (ORCID: https://orcid.org/0000-0001-7626-043X)
- Taehun Kim (ORCID: https://orcid.org/0009-0007-9666-5945)
Institutions
- Korea University of Technology and Education (KR)
Publication Details
- Published
- 2025-09-09
- DOI
- https://doi.org/10.1117/12.3072563
- Primary Topic
- Photonic Crystals and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00