Abstract
Here, we present new efficient deep-blue emitters developed by using proper molecular design for high efficiency and long lifetime organic light emitting diodes (OLEDs). These emitters not only show high photoluminescence quantum yield but also demonstrate very small solvatochromic effect with pure deep-blue color and excellent thermal properties. Blue OLEDs with new blue emitters exhibited high external quantum efficiency, appropriate CIE color coordinates with narrow full width half maximum (FWHM) and most importantly long operational lifetime compared to those of previously reported emitters.
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