IEEE: Paper Batteries, Blue Quantum Dots, and Other Enabling Technologies from CES 2023

Jan 12, 2023

Tekla S. Perry writing for IEEE:

“Briefly, in the now-ubiquitous QLED technology, quantum dots are used to improve color quality by tuning light to precise wavelengths. These LCD-based displays typically use an array of blue LEDs as a backlight along with a quantum-dot film that converts some of that light into the red and green frequencies used to make up an RGB (red-green-blue) image, passing the blue light through unchanged.

Nanosys says adding a blue quantum dot to the current red and green array won’t cost much (less than 10 percent more) and can reduce the harm caused by blue light without sacrificing colors or contrast. Its zinc selenide QD absorbs blue light from what is believed to be the most harmful range of wavelengths—425 to 445 nanometers—and reemits it in the 460-to-480-nm range.”