Presentation Information

3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[22p-D903-5]Dynamical behaviors of electron-hole pairs explored from transient EL-detected ESR

〇Haruka Tsutsumi¹, Katsuichi Kanemoto^1,2 (1.Osaka Metropolitan Univ., 2.NITEP)

Keywords:

OLED,magnetic resonance,transient response

For OLEDs under operation, it has been difficult to derive information on electron-hole pairs, which are intermediate states between carriers and excitons. In this study, we explored the dynamical behaviors of electron-hole pairs by EL-detected ESR, which measures the EL intensity during ESR. Using the LEC under stable operation, we evaluated the response speed after microwave irradiation by frequency sweep and observed the change in signal intensity after voltage application by time resolution. From these measurements, we observed the transient response of the EL- detected ESR signals and obtained knowledge related to the recombination process.

Back to Session information