With the growing demand for ultra-high-speed broadband communications, fast-response, LED-based optical communication technologies are gaining traction. However, conventional multi-channel, parallel structures have fundamental limitations, including wavelength-specific performance imbalances, process complexity, and bandwidth limitations.

Professor Himchan Cho's research focuses on developing colloidal quantum dot materials and color-conversion layers that can achieve high-efficiency light emission and circular polarization properties within the infrared wavelength range. These materials will be used in color-conversion optical communication devices to enable multi-channel, parallel optical communication systems spanning the entire visible-infrared (VIS-IR, 400–1,100 nm) spectrum.

The addition of chiral materials to colloidal quantum dots to achieve luminescence and circular polarization in the infrared and visible light spectrum for use in multichannel optical communications is highly creative research. This research overcomes the bandwidth limitations of existing photonic devices and is expected to expand to fields such as wearables, smart devices, and communications for autonomous vehicles.