[11p-S222-1~13] 12.4 Organic light-emitting devices and organic transistors

[11p-S222-9] Carrier behavior analysis of organic light-emitting diode during operation: Application of the electric-field-induced double-resonant sum-frequency generation vibrational spectroscopy for high efficiency blue-OLED

〇Tomoya Sato¹, Takayuki Miyamae¹, Hiroshi Ohata², Tetsuo Tsutsui² (1.AIST, 2.CEREBA)

Keywords:EFI-DR-SFG, Blue-OLED, Carrier behavior analysis

For clarifying the carrier behavior in practical OLEDs under operating condition, in this study, the high efficiency multilayer blue-OLED devices with triplet-triplet annihilation (TTA) process was directly investigated by using electric-field-induced double-resonant sum-frequency generation vibrational spectroscopy (EFI-DR-SFG). In this conference, we will explain the carrier behavior analysis by EFI-DR-SFG technique and report the detail of results of the EFI-DR-SFG measurements.