Spin-orbital coupling effects on light-emitting properties in organic and perovskite materials through orbital and spin polarizations in spontaneous and stimulated emission

Bin Hu

doi:10.1117/12.2594785

1 August 2021 Spin-orbital coupling effects on light-emitting properties in organic and perovskite materials through orbital and spin polarizations in spontaneous and stimulated emission

Bin Hu

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Proceedings Volume 11808, Organic and Hybrid Light Emitting Materials and Devices XXV; 118081C (2021) https://doi.org/10.1117/12.2594785
Event: SPIE Organic Photonics + Electronics, 2021, San Diego, California, United States

Abstract

This presentation will present our recent studies on spin-orbital coupling (SOC) effects of light-emitting properties in organic and perovskite materials. In general, SOC generates two fundamental outcomes: (i) spin flipping in the absence of orbital momentum and (ii) Rashba effects in the existence of orbital momentum. The former and latter play a critical role in controlling light-emitting properties. In organic materials, this presentation will discuss the new mechanism of forming SOC from amorphous charge-transfer states in the absence of heavy-metal complex structures. Essentially, a charge-transfer state simultaneously possesses internally-interacting electrical dipole and spin dipole, providing the fundamental possibility to generate an electric-magnetic coupling phenomenon functioning as an artificially-formed SOC, towards realizing a thermally activated delayed fluorescence (TADF) in organic molecules. In perovskites, this presentation will discuss the orbit-orbit interaction

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Bin Hu "Spin-orbital coupling effects on light-emitting properties in organic and perovskite materials through orbital and spin polarizations in spontaneous and stimulated emission", Proc. SPIE 11808, Organic and Hybrid Light Emitting Materials and Devices XXV, 118081C (1 August 2021); https://doi.org/10.1117/12.2594785

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KEYWORDS

Perovskite

System on a chip

Spin polarization

Excitons

Crystals

Molecules

Luminescence

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