Eiji Shiko from the Japan Advanced Institute of Science and Technology, developed an OLED device that emits circularly polarized light in the visible light range. This could enable 3D displays on OLEDs.
To produce the circularly polarized light in the visible light range, the spin state during the light emission process is controlled by injecting a spin-polarized carrier from the ferromagnetic negative electrode into the emission layer.
Light emission with a circular polarization degree of about 0.5% was observed when a magnetic field intensity of 3,000 Oe is applied at room temperature, Shikoh said.
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