[15p-K404-1~18] 12.2 Characterization and Materials Physics

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)

[15p-K404-4] Evaluation of triplet lifetime of partially deuterated rubrene for low threshold TTA-UC

〇Kenji Kamada¹ (1.AIST)

Keywords:

triplet lifetime,deuteration,triplet-triplet annihilation photon upconversion

Deuteration of rubrene was attempted to lower the threshold of triplet-triplet annihilation (TTA) photon upconversion (UC) from near-infrared light, and its triplet lifetime was evaluated. Pt-catalyzed deuterated substitution was employed for the deuteration, but fading suggesting deformation the rubrene backbone was observed, resulting in the deuteration ratio of only about 20%. With the partially deuterated rubrene, the triplet lifetime was evaluated from the decay profiles of UC emission, and a 2% increase in the lifetime was observed