Efficient and Stable White Organic Light-Emitting Diodes Employing a Single Emitter
Using a single tetradentate platinum emitter dubbed Pt7O7, efficient and stable white organic light‐emitting diodes are developed. The excimer‐based white devices achieve an external quantum efficiency (EQE) of 24.5%, coordinates of (0.37, 0.42) based on the Commission internationale de l'éclai...
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Veröffentlicht in: | Advanced materials (Weinheim) 2014-05, Vol.26 (18), p.2931-2936 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Using a single tetradentate platinum emitter dubbed Pt7O7, efficient and stable white organic light‐emitting diodes are developed. The excimer‐based white devices achieve an external quantum efficiency (EQE) of 24.5%, coordinates of (0.37, 0.42) based on the Commission internationale de l'éclairage (CIE) system, and a color rendering index (CRI) of 70. Moreover, devices of Pt7O7 in a stable structure demonstrate operational lifetimes (50% initial luminance) of 36 h at an elevated driving current of 20 mA cm2, which corresponds to over 10 000 h at 100 cd m2. |
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ISSN: | 0935-9648 1521-4095 |
DOI: | 10.1002/adma.201305507 |