Researchers have created pixels that are as small as a virus, or approximately 90nm in size. Claimed to be the "world's smallest LEDs," a blog post shared by Zhejiang University says that the new 'nano-PeLED' pixels can be packed close enough to create displays with a stunning 127,000 pixels per inch (PPI). Current micro-LED technology struggles with efficiency issues at pixel sizes below 10µm (about 111x larger than 90nm) which high-end AR/VR applications can benefit from.
Physicists, engineers, and photonics experts from the aforementioned Zhejiang University in China and the University of Cambridge in the UK collaborated on this advance, which is said to be reliant upon perovskite. Readers may be more familiar with this material due to its widespread use in solar panels. Here it is instrumental to the fabrication of the new nano-PeLEDs.
