The 77th JSAP Autumn Meeting, 2016

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

[13p-B11-1~14] 12.4 Organic light-emitting devices and organic transistors

Tue. Sep 13, 2016 1:15 PM - 5:30 PM B11 (Exhibition Hall)

Shigeki Naka(Univ. of Toyama), Hajime Nakanotani(Kyushu Univ.), Daisuke Yokoyama(Yamagata Univ.)

3:00 PM - 3:15 PM

△ [13p-B11-6] Influences of Solution-Processed HTL/EML/ETL Interfaces on OLED characteristics.

〇Satoru Ohisa1, Yong-Jin Pu1, Norifumi Yamada2, Go Matsuba1, Junji Kido1 (1.Yamagata Univ., 2.KEK)

Keywords:OLED, solution-processed small molecule/small molecule interface, neutron reflectometry

Recent material developments enabled fabrication of organic light-emitting devices (OLEDs) including solution-processed four-layer films consisted of hole-injection layer/hole-transporting layer (HTL)/light-emitting layer (EML)/electron-transporting layer (ETL), resulted in large improvements of OLED characteristics. To further improve the OLED characteristics, precise evaluation of the solution-processed interfaces is essential. In this work, we, for the first time, succeeded in the precise evaluation of the solution processed polymer HTL/small molecule EML/small molecule ETL interfaces with sub-nanometer ordered resolution along the depth direction by neutron reflectometry, and elucidated the influences of the interfaces on the OLED characteristics.