[8a-E308-1~7] 12.4 Organic light-emitting devices, organic transistors, and flexible devices

10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)

[8a-E308-3] High-Performance OLEDs Enabled by Organic Interface Engineering Using Co-Evaporated Dipole Layers

〇Shuto Osumi¹, Masaki Tanaka^1,2, Chihaya Adachi^1,2 (1.OPERA, Kyushu Univ., 2.I2CNER, Kyushu Univ.)

Keywords:

organic electro-luminescence

Controlling carrier balance is crucial for improving the performance of organic light-emitting diodes (OLEDs). In general, charge injection characteristics at organic heterointerfaces depend on the energy level differences between the HOMO and LUMO, as well as on the magnitude of the vacuum level shift at the interface. In this study, we used co-evaporated thin films containing molecules exhibiting spontaneous orientation polarization (SOP) as an interfacial dipole layer. Then, we evaluated the effects of the magnitude of SOP and the charge transport characteristics of the interfacial dipole layer on OLED performance.