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(Left) Photo showing the colour-enhancement effect from using a prototype of the perovskite-based film. When the film is placed between the backlight unit and the display screen, a spectrally “purer” red and green colour is observed. (Right) Figure showing the coverage of the colour space by perovskite, compared to Rec. 2020 and DCI-P3 colour standards. Credit: National University of Singapore

Creating displays with richer colors

Current commercial display technologies such as OLEDs (organic light-emitting diodes) and QLED (quantum dot light-emitting diodes) can only produce slightly more than 50 percent...