Solar cells make OLEDS luminous enough for mobile devices

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In the OLEDsolar cell stack at left the high contrast between the on and off pixels is clearly seen compared with the conventional bottom-emitting OLED at right. Image credit: Yang et al.
In the OLED+solar cell stack at left, the high contrast between the on and off pixels is clearly seen, compared with the conventional bottom-emitting OLED at right. Image credit: Yang et al.

Organic light-emitting diodes (OLEDs) offer an alternative to conventional electronic displays (such as LCDs) and have advantages generally including wide viewing angles, rapid response and thin shapes. However, one area that scientists would like to improve is achieving better contrast, especially under strong lighting environments. A low-power, high-contrast OLED could provide higher quality displays for mobile electronics, and also result in longer battery lifetimes.


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