Multi-Resonance Induced Thermally Activated Delayed Fluorophores for Narrowband Green OLEDs.

08:00 EDT 25th September 2019 | BioPortfolio

Summary of "Multi-Resonance Induced Thermally Activated Delayed Fluorophores for Narrowband Green OLEDs."

High-color purity emissions with small a full-width at half-maximum (FWHM) are ongoing pursuit for high-resolution displays. Though the flourishment of narrow-band emissive materials with multi-resonance induced thermally activated delayed fluorescence (MR-TADF) in blue region, such materials haven't validated their potential in other color regions. By amplifying the influence of skeleton and peripheral units, a series of highly efficient green-emitting MR-TADF materials are firstly reported here. It is found that peripheral units with electron-deficit property can significantly narrow the energy gap for bathochromic emission without compromising the color fidelity. MR-TADF emitters with photo-luminance quantum yields of above 90% with FWHMs of ≤ 25 nm are thereof developed. The corresponding organic light-emitting diodes show maximum external quantum efficiency/ power efficiency of 22.02%/ 69.82 lm/W with excellent long-term stability.


Journal Details

This article was published in the following journal.

Name: Angewandte Chemie (International ed. in English)
ISSN: 1521-3773


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