The smallest LED screen worldwide: pixels smaller than a virus

The smallest LED screen worldwide: pixels smaller than a virus

physicists created the smallest light-emitting diodes (LEDs) of all time 1 . The above picture was shown on a monochromatic display with pixels that are less than 100 micrometers in size - such as the width of human hair. Baodan Zhao from the Zhejiang University in Hangzhou, China, and her colleagues were also able to develop an even smaller LED, the pixels of which are only 90 nanometers in size-the size of a typical virus. These are too small to be dissolved even by the most powerful optical microscopes. The results are published today in the Nature journal.

leds are Halbleiter Emitting light when an electrical current flows through it. The researchers made a semiconductor from Perovskit, a material class that not only encompasses common minerals from the ground mantle, but also those that in Progressive Solar Panels are used. The Perowskit made it possible for the team's LEDs to remain bright even with microscopic pixels. "Apart from our scientific curiosity, such experiments show that the perovskit LEDs can still achieve adequate efficiency in extremely small sizes," explains Zhao. This gives you an advantage over conventional LEDs.

1. lian, y. et al. Nature https://doi.org/10.1038/s41586-025-08685-W (2025).

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