The 69th JSAP Spring Meeting 2022

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12 Organic Molecules and Bioelectronics » 12.4 Organic light-emitting devices and organic transistors

[22p-E206-1~11] 12.4 Organic light-emitting devices and organic transistors

Tue. Mar 22, 2022 1:30 PM - 5:15 PM E206 (E206)

Shigeki Naka(Univ. of Toyama), Hirohiko Fukagawa(NHK), Takayuki Chiba(Yamagata Univ.)

4:45 PM - 5:00 PM

△ [22p-E206-10] Super-low-index porous hole-transport layer for high-outcoupling-efficiency OLEDs

〇Masaharu Aoki1, Jiro Kumaki1, Daisuke Yokoyama1,2 (1.Dept. of Org. Mater. Sci., Yamagata Univ., 2.ROEL, Yamagata Univ.)

Keywords:low refractive index, outcoupling, organic light-emitting diodes

To further improve the external quantum efficiency (EQE) of high-performance organic light-emitting diodes (OLEDs), it is currently essential to enhance their outcoupling efficiency (OCE). As a technique to realize it, the development of low-index charge transport layers is expected. In this study, a super-low-index porous hole transport layer, whose refractive index is 1.42 at 550 nm, is newly fabricated. Furthermore, by applying the layer to an OLED, 1.4-fold enhancements of the OCE and EQE are demonstrated.