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Advances in Blue OLEDs Increase Efficiency and Lifetime

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ANN ARBOR, Mich., Sept. 25, 2014 — A new configuration extends the efficiency of blue organic light-emitting diodes (OLEDs) from about 5 percent to 20 percent, potentially leading to longer battery life in smartphones and lower power consumption for large screen televisions. Phosphorescent OLEDs (PHOLEDs), which commonly emit red and green light, have demonstrated higher efficiencies than fluorescent OLEDs and are already used in many existing TVs and smartphones. However, blue PHOLEDs tend to have a shorter lifetime than their red or green counterparts. In the study, conducted at the University of Michigan, a blue PHOLED...Read full article

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