Circularly polarized luminescence and persistent luminescence from spin-orbital coupling and spin-phonon coupling effects

Bin A. Hu

doi:10.1117/12.3028089

30 September 2024 Circularly polarized luminescence and persistent luminescence from spin-orbital coupling and spin-phonon coupling effects

Bin A. Hu

Author Affiliations +

Proceedings Volume 13122, Organic and Hybrid Light Emitting Materials and Devices XXVIII; 131220S (2024) https://doi.org/10.1117/12.3028089
Event: Organic Photonics + Electronics, 2024, San Diego, California, United States

Abstract

This presentation will report our recent studies on circularly polarized luminescence and persistent luminescence enabled by spin-orbital coupling and spin-phonon coupling effects. Our experimental studies of magnetic field effects found that the circularly polarized luminescence are essentially originated from the circularly polarized orbital ordering effects when spin-orbital coupling is combined with nonlinear optical polarizable structures. Furthermore, we found that extremely slow spin-phonon coupling can be realized by combining the un-usual phonon dynamics from dipolar crystalline structures with spin-orbital coupling. Interestingly, the extremely slow spin-phonon coupling can extend the excited state dynamics from traditional time window of nano/micro-seconds to an emerging time window of seconds, leading to persistent delayed fluorescence. Therefore, spin-orbital coupling and spin-phonon coupling function as an important mechanism to generate circularly polarized luminescence persistent luminescence.

Conference Presentation

Citation Download Citation

Bin A. Hu "Circularly polarized luminescence and persistent luminescence from spin-orbital coupling and spin-phonon coupling effects", Proc. SPIE 13122, Organic and Hybrid Light Emitting Materials and Devices XXVIII, 131220S (30 September 2024); https://doi.org/10.1117/12.3028089

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