Ultrafast spectroscopy for probing electronic/structural dynamics of molecular materials

Kiyoshi Miyata; Xiaoyang Zhu; Ken Onda

Presentation information

Symposium (Oral)

Symposium (technical) » Advanced optical measurements in the field of organic electronics

[19p-C212-1~6] Advanced optical measurements in the field of organic electronics

Thu. Sep 19, 2019 1:30 PM - 4:45 PM C212 (C212)

Toshihiro Shimada(Hokkaido Univ.), Takashi Nagase(Osaka Pref. Univ.), Masatoshi Sakai(Chiba University), Sadakata Atsuo(Kyushu Sangyo University )

1:30 PM - 2:00 PM

[19p-C212-1] Ultrafast spectroscopy for probing electronic/structural dynamics of molecular materials

〇Kiyoshi Miyata¹, Xiaoyang Zhu², Ken Onda¹ (1.Kyushu Univ., 2.Columbia Univ.)

Keywords:Ultrafast spctroscopy, Lead-halide perovskites, Thermally activated delayed fluorescence

Microscopic understanding of photophysical processies including exciton and carrier physics in organic/organic-inorganic hybrid semiconductors represents a great challenge, because of complexity resulting from the strong electron-phonon coupling. Here we demonstrate a couple of successful applications using ultrafast time-resolved spectroscopy, time-resolved optical Kerr effect (TR-OKE) and time-resolved infrared vibrational spectroscopy (TR-IR), to lead-halide perovskite materials and organic emitters for light emitting diodes. We clarify the relations between structural dynamics and their functions.