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State‐of‐the‐art phosphorescent organic light‐emitting diode (PHOLED™) lifetime and efficiency performances for a range of emission colors are reported. Lifetimes in excess of 100,000 hours were demonstrated at display luminance levels for yellow‐green and NTSC deep‐red emission. In addition, external quantum efficiencies close to the theoretical maximum are demonstrated for long‐lived PHOLEDs.
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Weaver et al. (2006) studied this question.
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