optoelectronics

Seoul Viosys has begun mass production of WICOP 3, a rare-earth-free white light micro-LED chip as small as 10µm, eliminating the need for phosphor packaging and synthetic materials while cutting manufacturing costs by about half.

Researchers at the Beijing Institute of Technology developed a device using mercury telluride colloidal quantum dots and a dual-layer OLED to convert different infrared wavelengths into distinct visible colors, enabling full-color night vision.