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9 March 2024 Photonic-crystal based emissive III-V on Si microstructures for color conversion applications
Badhise Ben Bakir, Amade Ndiaye, Ahlem Ghazouani, Romain Sommer, Elisa Vermande, Christine Di Nardo, Christian Seassal, Emmanuel Drouard, Christophe Jany
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Proceedings Volume PC12890, Smart Photonic and Optoelectronic Integrated Circuits 2024; PC128900I (2024) https://doi.org/10.1117/12.2692474
Event: SPIE OPTO, 2024, San Francisco, California, United States
Abstract
We report on the design, fabrication, and characterization of the first photonic crystal (PhC)-based red multiple-quantum-well (MQW) color converters fully optimized for augmented reality (AR) microdisplays through a quasi-3D light harnessing principle. This principle leverages an aluminum (Al) bottom reflector and a silicon dioxide (SiO2) gap to harness the bottom-emitted light, along with copper (Cu) lateral mirrors and a silicon nitride (SiN) phase-matcher for Bloch-mode replication. These structures were designed using 3D-FDTD simulations. As a proof-of-principle, we fabricated corresponding devices that exhibit promising characteristics, including record light extraction efficiencies over 40% for 4µm pixels and emission patterns with high directionality. Time-resolved photoluminescence (TRPL) analyses, along with a four-wave intensity model developed in this work, indicate that there is still room for improvement. We believe that the guidelines established in this study could pave the way for the use of MQW color converters in the next generation of very bright, high-resolution RGB microdisplays for AR glasses and beyond.
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Badhise Ben Bakir, Amade Ndiaye, Ahlem Ghazouani, Romain Sommer, Elisa Vermande, Christine Di Nardo, Christian Seassal, Emmanuel Drouard, and Christophe Jany "Photonic-crystal based emissive III-V on Si microstructures for color conversion applications", Proc. SPIE PC12890, Smart Photonic and Optoelectronic Integrated Circuits 2024, PC128900I (9 March 2024); https://doi.org/10.1117/12.2692474
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KEYWORDS
Silicon
Color
Emissivity
Photonic microstructures
RGB color model
Electromagnetism
Fabrication
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