Indole-fused BN-heteroarenes as narrowband blue emitters for organic light-emitting diodes
JOURNAL OF MATERIALS CHEMISTRY C(2023)
Abstract
A new family of indole-fused multi-resonance thermally activated delayed fluorescence materials have been developed, which exhibit narrowband blue emission with a small full width at half maximum of 22-23 nm. High maximum external quantum efficiencies of up to 16.8% have been achieved in organic light-emitting diodes. Furthermore, it is unveiled that peripheral substitutions can not only promote device efficiency but also help to maintain narrowband emission under high dopant concentrations.
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