Modeling and design strategies for high-performance circularly polarized light-emitting diodes

Changsoon Kim; Yongmoon Lee; Hyungchae Kim

doi:10.1117/12.2691030

1 October 2023 Modeling and design strategies for high-performance circularly polarized light-emitting diodes

Changsoon Kim, Yongmoon Lee, Hyungchae Kim

Proceedings Volume PC12659, Organic and Hybrid Light Emitting Materials and Devices XXVII; PC126590W (2023) https://doi.org/10.1117/12.2691030
Event: SPIE Organic Photonics + Electronics, 2023, San Diego, California, United States

Abstract

Circularly polarized light-emitting diodes (CP-LEDs) are crucial for applications including 3D and glare-free displays, and chiral sensing. Most research to date has focused on developing circularly polarized (CP) emitters that can inherently emit CP light. However, the impact of the electromagnetic environment within the thin-film geometry of CP-LEDs on chiroptical properties is often overlooked, leading to discrepancies in the chiroptical properties between isolated CP emitters and CP-LED incorporating these emitters. We present a theoretical method for accurately modeling CP-LEDs that employ a CP emitter, described as one of two types of coherent superpositions of linearly polarized dipoles oscillating with a phase difference of π/2: an electric and magnetic dipole (Type I) parallel to each other or two orthogonal electric dipoles (Type II). Type I represents an idealized, structurally chiral material, which has been the primary focus of the development of CP emitters thus far, while Type II corresponds to emission resulting from radiative recombination of carriers with specific spins or orbital angular momenta. Based on our calculations, we provide design strategies for CP-LEDs that possess both a high dissymmetry factor and a high quantum efficiency.

Conference Presentation

Citation Download Citation

Changsoon Kim, Yongmoon Lee, and Hyungchae Kim "Modeling and design strategies for high-performance circularly polarized light-emitting diodes", Proc. SPIE PC12659, Organic and Hybrid Light Emitting Materials and Devices XXVII, PC126590W (1 October 2023); https://doi.org/10.1117/12.2691030

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