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The screen tech that can do almost anything
New technology promises TV and phone screens that use much less electricity than current models.
Not only that, PeLEDs are very unusual in that they can absorb light as well as emit it, meaning you can use the same material to integrate touch, fingerprint and ambient light-sensing capabilities, says Feng Gao at Linköping University in Sweden. “By slightly tuning the chemical composition you can cover the full visible spectrum,” says Dr Braga, explaining that making perovskites is a relatively simple and cheap process. They are desirable in part because they can be tuned to emit a very specific, very pure form of red, green or blue – the key hues required for full colour digital displays.
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