Phosphorescent OLED and Hole Transporting Materials for Phosphorescent OLEDs
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Feb 16, 2017
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Apr 17, 2015
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Apr 17, 2014
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The present invention relates to phosphorescent organic light-emitting diodes (OLEDs) comprising a hole-transporting or a hole-transporting and an electron-blocking layer comprising N,N,N′,N′-tetraaryl-phenylene-3,5-diamine compounds bearing in position 1 of the phenylenediamine core a 9H-fluorenyl substituent. The inventive compounds are useful as hole-transporting and electron-blocking layer matrices in phosphorescent OLEDs.
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