2021/08/11 by Sanghyeok Park, Dongha Kim, Min-Kyo Seo +1 · 1 citation
Chemistry · Engineering · Materials Science · Physics and Astronomy · #2D Materials and Applications #Biexciton #Chemistry #Condensed matter physics #Exciton #Heterojunction #Materials science #Optics #Optoelectronics #Photonic crystal #Photonics #Physics #Plasmon #Plasmonic and Surface Plasmon Research #Polarization (electrochemistry) #Quantum mechanics #Radiative transfer #Strong Light-Matter Interactions #cond-mat.mes-hall #physics.optics #van der Waals force
paper · pdf · doi:10.1021/acsphotonics.1c01243
published in ACS Photonics 8(12), 3619-3626 (American Chemical Society) · 26 pages, 5 figures
arxiv created 2021/08/11 · openalex publication_date 2021/12/01 · arxiv updated 2021/12/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Interlayer excitons in van der Waals heterostructures of two-dimensional transition-metal dichalcogenides have recently emerged as a fascinating platform for quantum many-body effects, long-range interactions, and optovalleytronic applications. The practical implementation of such phenomena and applications requires further development of the long-lived character of interlayer excitons. Whereas material developments have successfully enhanced the nonradiative lifetime, the out-of-plane polarization nature of the interlayer excitons has made it challenging to improve the radiative lifetime with conventional photonic mirrors. Here, we propose and systematically analyze a plasmonic photonic crystal (PPhC) mirror that can increase the radiative lifetime of interlayer excitons by 2 orders of magnitude. Based on the vacuum field transition, the PPhC mirror supports spatially uniform radiative decay suppression over its territory, which is crucial for engineering the interlayer excitons not localized at a specific position. The PPhC mirror platform offers new possibilities for realizing long-lived interlayer exciton-based nanodevices.