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Proceedings Paper

Blue phosphorescent OLEDs with 34.1% external quantum efficiency using a low refractive index electron transporting material
Author(s): Hyun Shin; Jeong-Hwan Lee; Chang-Ki Moon; Jin-Suk Huh; Bomi Sim; Jang-Joo Kim
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Paper Abstract

In this study, we demonstrate a blue OLED with the EQE of 34% and power efficiency of 79.6 lm W-1 using low refractive index electron transporting layer which are the highest efficiencies ever reported in blue OLEDs. In addition, we quantitatively calculated maximum achievable outcoupling efficiencies according to change of refractive indices, which can be used to estimate the achievable outcoupling efficiency of OLEDs without fabrication. The simulation indicates that EQE over 60% can be achievable in PhOLEDs if refractive indices of consisting organic materials’ are close to 1.5.

Paper Details

Date Published: 23 September 2016
PDF: 12 pages
Proc. SPIE 9941, Organic Light Emitting Materials and Devices XX, 99411X (23 September 2016); doi: 10.1117/12.2236763
Show Author Affiliations
Hyun Shin, Seoul National Univ. (Korea, Republic of)
Jeong-Hwan Lee, Seoul National Univ. (Korea, Republic of)
Chang-Ki Moon, Seoul National Univ. (Korea, Republic of)
Jin-Suk Huh, Seoul National Univ. (Korea, Republic of)
Bomi Sim, Seoul National Univ. (Korea, Republic of)
Jang-Joo Kim, Seoul National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 9941:
Organic Light Emitting Materials and Devices XX
Franky So; Chihaya Adachi; Jang-Joo Kim, Editor(s)

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