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Electrically programmable circularly polarized three-dimensional display
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DOI：10.1038/s41566-026-01920-4.png)
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Abstract
En 中文
Circularly polarized light-emitting diodes (CP-LEDs) are important for next-generation three-dimensional displays as the spin angular momentum carried by circularly polarized light provides a wide viewing angle, low brightness loss, high contrast and excellent fidelity. However, the simultaneous enhancement of the electroluminescence dissymmetry factor and external quantum efficiency in CP-LEDs remains challenging. Here we report blue, green and red CP-LEDs, with a dissymmetry factor of 1.54 and external quantum efficiency of 6.1% for the red CP-LED, placing it among the best performing devices in this spectral window. The performance is enabled by achiral inorganic nanowire-based assemblies that simultaneously act as the emissive layers of linearly polarized light and quarter-wave plates for the conversion of emitted light into circularly polarized light. We demonstrate an electrically programmable 64-pixel prototype display that allows differentiating the brightness difference between left and right circularly polarized electroluminescence by the naked eye through circular polarizers with an excellent anti-glare effect. Our work marks a critical step towards the practical applications of CP-LEDs in three-dimensional displays. A co-assembled nanorod/nanowire layer enables red, green and blue circularly polarized LEDs with dissymmetry factors as high as 1.54. In a 64-pixel prototype display, the brightness between different polarizations can be distinguished by the naked eye.
Keywords:
Circularly polarized light-emitting diodes
electroluminescence dissymmetry factor
external quantum efficiency
nanowire-based assemblies
three-dimensional displays
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