International Display Workshops General Incorporated Association

14:40 〜 15:00

[OLED5-1(Invited)] Operando Sum-Frequency Generation Spectroscopy of High-Efficiency OLEDs for Probing the Charge Carrier Activity

*Takayuki Miyamae1 (1. Chiba University (Japan))

OLEDs, Operando measurement, sum frequency generation, High-efficiency Blue-OLED

https://doi.org/10.36463/idw.2020.0405

Buried organic layers in OLEDs during operation have been investigated using electric-field-induced doubly-resonant sum-frequency generation (EFI-DR-SFG). DC electric field leads to a significant increase in the SFG intensity produced by the charged carriers. We also report the time-resolved EFI-SFG technique, which allows us to observe the carrier transportation non-destructively.