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Proceedings Paper

Extremely high efficiency phosphorescent organic light-emitting diodes with horizontal emitting dipoles
Author(s): Kwon-Hyeon Kim; Chang-Ki Moon; Jeong-Hwan Lee; Jang-Joo Kim
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Paper Abstract

We present the factors influencing the orientation of the phosphorescent dyes in phosphorescent OLEDs. And, we report that an OLED containing a phosphorescent emitter with horizontally oriented dipoles in an exciplex-forming co-host that exhibits an extremely high EQE of 32.3% and power efficiency of 142 lm/W, the highest values ever reported in literature. Furthermore, we experimentally and theoretically correlated the EQE of OLEDs to the PL quantum yield and the horizontal dipole ratio of phosphorescent dyes using three different dyes.

Paper Details

Date Published: 8 October 2014
PDF: 7 pages
Proc. SPIE 9183, Organic Light Emitting Materials and Devices XVIII, 918326 (8 October 2014); doi: 10.1117/12.2062527
Show Author Affiliations
Kwon-Hyeon Kim, Seoul National Univ. (Korea, Republic of)
Chang-Ki Moon, Seoul National Univ. (Korea, Republic of)
Jeong-Hwan Lee, Seoul National Univ. (Korea, Republic of)
Jang-Joo Kim, Seoul National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 9183:
Organic Light Emitting Materials and Devices XVIII
Franky So; Chihaya Adachi, Editor(s)

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