Presentation Information

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[25a-22B-8]Enhanced efficiency of NIR-OLEDs by deuteration of host and guest molecules

〇Yuika Tamura¹, Nakanotani Hajime^1,2, Adachi Chihaya^1,2 (1.OPERA, Kyushu Univ., 2.WPI I2-CNER2)

Keywords:

NIR-OLED

Organic light-emitting diodes (OLEDs) that exhibit Near-Infrared (NIR) electroluminescence (EL) possess substantial potential for future valuable sensing applications. However, photoluminescence quantum yield (PLQY) of NIR emitters represents a significant impediment to these applications due to a huge non-radiative decay rate following the energy gap law. In particular, EL quantum efficiency of the NIR-OLEDs exhibiting EL wavelength of over 900 nm remains limited to a few percent. To suppress non-radiative decay of the NIR emitters, deuteration of C-H bond of the molecules has been proposed. However, there is no report regarding the deuteration effect on the NIR photoluminescence properties in host-guest co-deposited films. In this study, we report the significant impact of the deuteration of both host and guest molecules on the NIR photoluminescence properties in the co-deposited film

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