Perovskite LEDs for next-generation digital displays can detect fingerprints, changing light conditions and more

Feng Gao, professor in optoelectronics at Linköping University in Sweden. Credit: Olov Planthaber

Researchers at Linköping University, Sweden, have developed a digital display screen where the LEDs themselves react to touch, light, fingerprints and the user’s pulse, among other things. Their results, published in Nature Electronics, could be the start of a whole new generation of displays for phones, computers and tablets.

The LEDs are made of a crystalline material called perovskite. Its excellent ability of light absorption and emission is the key that enables the newly developed screen.
“We’ve now shown that our design principle works. Our …
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