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

10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)

[8a-E308-2] Evaluation of the thermal reduction process of spontaneous orientation polarization
by DCM-PL technique

〇Yuki Fujisawa¹, Yuta Moribe², Yutaka Noguchi^1,2 (1.GSST,Meiji Univ., 2.SST,Meiji Univ.)

Keywords:

Spontaneous Orientation Polarization,OLED,DCM

Spontaneous orientation polarization (SOP) in vapor-deposited OLED films has a significant impact on device performance. In this study, we evaluated the thermal reduction process of SOP in multilayer devices using a method that simultaneously measures displacement current and photoluminescence (DCM-PL method). The results suggest not only changes in injection characteristics accompanying the thermal reduction of SOP but also changes in interlayer diffusion and charge separation behavior at the multilayer interface.