[OLED4-2]Probing Exciton Formation at the Organic Interfaces of Multilayer OLEDs under Operation using Electronic Sum-Frequency Generation Spectroscopy
*Tatsuya Kaburagi1, Kazunori Morimoto1, Takayuki Miyamae1(1. Chiba University (Japan))
Keywords:
OLED,electronic sum-frequency generation spectroscopy,operando measurement
Understanding the interfacial electronic states is important to optimize the OLED structures. In this study, electronic sum-frequency generation (ESFG) spectroscopy is applied for the investigation of the electronic transition states of the OLEDs. ESFG measurements under operation revealed changes in ESFG spectra originating from formation of the exciton at the emission layer interface.