[17p-B6-1~16] 12.4 Organic light-emitting devices and organic transistors

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)

[17p-B6-14] Observation of carrier behavior of blue organic light-emitting diodes using displacement current measurement

〇(M1)Ryo Koike¹, Takaaki Suzuki¹, Yuya Tanaka¹ (1.Gunma Univ.)

Keywords:

organic light-emitting diode,displacement current measurement,charge transport

The operating principle of blue organic light-emitting diodes (Blue-OLEDs) is different from that of other colors, and the devices based on triplet-triplet fluorescence (TTF), in which two triplet excitons fuse back to a singlet exciton, are often used in practical applications. In this study, we evaluated the carrier behavior of Blue-OLEDs using the displacement current measurement (DCM) , and found that the accumulation positions of holes and electrons inside the device and the discharge process occurs in two separate stages.