TY - JOUR
T1 - 0.6-1.6 THz band spectroscopy of organic thermally activated delayed fluorescence materials
AU - Takeda, Harunobu
AU - Chen, Cong
AU - Komino, Takeshi
AU - Yoshioka, Hiroaki
AU - Oki, Yuji
AU - Adachi, Chihaya
PY - 2016
Y1 - 2016
N2 - Newly developed thermally activated delayed fluorescence (TADF) materials are attractive for application in efficient displays. Five TADF materials, including PXZ-TRZ and four carbazolyl dicyanobenzene (CDCB) derivatives of 4CzTPN, 4CzTPN - Ph, 2CzPN, and 4CzIPN, were investigated using terahertz spectroscopy in the 0.60 - 1.60 THz range. While PXZ-TRZ was almost transparent, the carbazolyl dicyanobenzene (CDCB) derivatives, especially 4CzIPN, exhibited intrinsic absorption features. Comparing these results with density functional theorem calculations, each absorption feature was clarified to originate from the intramolecular motions of the carbazole units.
AB - Newly developed thermally activated delayed fluorescence (TADF) materials are attractive for application in efficient displays. Five TADF materials, including PXZ-TRZ and four carbazolyl dicyanobenzene (CDCB) derivatives of 4CzTPN, 4CzTPN - Ph, 2CzPN, and 4CzIPN, were investigated using terahertz spectroscopy in the 0.60 - 1.60 THz range. While PXZ-TRZ was almost transparent, the carbazolyl dicyanobenzene (CDCB) derivatives, especially 4CzIPN, exhibited intrinsic absorption features. Comparing these results with density functional theorem calculations, each absorption feature was clarified to originate from the intramolecular motions of the carbazole units.
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U2 - 10.1364/OME.6.003045
DO - 10.1364/OME.6.003045
M3 - Article
AN - SCOPUS:84992463453
VL - 6
SP - 3045
EP - 3052
JO - Optical Materials Express
JF - Optical Materials Express
SN - 2159-3930
IS - 10
ER -