0.6-1.6 THz band spectroscopy of organic thermally activated delayed fluorescence materials

Harunobu Takeda, Cong Chen, Takeshi Komino, Hiroaki Yoshioka, Yuji Oki, Chihaya Adachi

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)3045-3052
Number of pages8
JournalOptical Materials Express
Volume6
Issue number10
DOIs
Publication statusPublished - 2016

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

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