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11.1: Invited Paper : Advances in Blue Phosphorescent Organic Light‐Emitting Devices
Weaver, M. S.; Tung, Y.‐j.; D'Andrade, B.; Esler, J.; Brown, J. J.; Mackenzie, P. B.; Walters, R. W.; Tsai, J.‐y.; Brown, C. S.; Lin, C.; Forrest, S. R.; Thompson, M. E.
2006-06
Citation:Weaver, M. S.; Tung, Y.‐j. ; D'Andrade, B.; Esler, J.; Brown, J. J.; Mackenzie, P. B.; Walters, R. W.; Tsai, J.‐y. ; Brown, C. S.; Lin, C.; Forrest, S. R.; Thompson, M. E. (2006). "11.1: Invited Paper : Advances in Blue Phosphorescent Organic Lightâ Emitting Devices." SID Symposium Digest of Technical Papers 37(1).
Abstract: This paper discusses the latest developments towards a commercial blue phosphorescent organic light emitting device (PHOLED™) technology. Progress towards achieving a high efficiency, long‐lived saturated blue PHOLED is discussed. First, a high efficiency (20% EQE, 45 cd/A), light blue (0.17, 0.39) PHOLED is presented. Next, long‐lived blue PHOLEDs having chromaticity co‐ordinates (0.17, 0.38) and (0.16, 0.29) are estimated to degrade to half their initial luminance of 200cd/m 2 after >100,000 hrs and 17,500 hrs, respectively. Finally, results from PHOLEDs designed to increase blue color saturation and lifetime are presented.
