[16p-K406-1~16] 12.3 Functional Materials and Novel Devices

1:45 PM - 2:00 PM JST(4:45 AM - 5:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[16p-K406-4] Anti-Stokes photoluminescence in thin films based on TADF molecules

〇Miwa Kaneko¹, Shintaro Kohata¹, Hajime Nakanotani^1,2, Chihaya Adachi^1,2 (1.OPERA, Kyushu Univ., 2.I2CNER, Kyushu Univ.)

Keywords:

Anti-Stokes photoluminescence,Hot band Absorption,TADF

Photon upconversion (PUC) is a promising technology for future energy recovery systems. Among various PUC processes, the PUC process utilizing hot band absorption (HBA) holds potential for applications in optically excited cooling technologies. In this study, we investigated the anti-Stokes photoluminescence (ASPL) characteristics of organic solid thin films using thermally activated delayed fluorescence molecules as the active material. Through temperature-dependent measurements of transient photoluminescence, HBA, and ASPL, we discuss the detailed PUC processes in the solid thin-film state.