Title
Linear-shaped thermally activated delayed fluorescence emitter using 1,5-naphthyridine as an electron acceptor for efficient light extraction
Author
Youngnam Lee, Seung-Je Woo, Jang-Joo Kim, Jong-In Hong
Year
2020
Journal
Organic Electronics
Abstract
In this study, we developed a donor-π-acceptor-π-donor-type thermally activated delayed fluorescence (TADF) emitter (NyDPAc) using 1,5-naphthyridine as a core moiety. NyDPAc exhibited a high horizontal dipole ratio and thus a high external quantum efficiency (20.9%) even at a relatively low photoluminescence quantum yield (57%). 1,5-naphthyridine as an electron acceptor represents a promising core moiety for efficient TADF materials.
Instrument
V-730, FP-8300
Keywords
Absorption, Fluorescence, Phosphorescence, Chemical stability, Solid state, LEDs, Materials