A diphenylphosphine oxide decorated multi-resonance TADF emitter for narrowband green electroluminescence with an EQE of 32.4

A new narrowband thermally activated delayed fluorescence emitter, PhCzBN-PO , was developed by incorporating the diphenylphosphine oxide (DPPO) group into a multi-resonance core. The unique properties of DPPO enabled PhCzBN-PO to achieve pure green emission and a nonplanar structure. The resulting...

Full description

Saved in:
Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2024-06, Vol.6 (53), p.6789-6792
Main Authors: Dong, Junjie, Xu, Yulin, Wang, Shuni, Miao, Jingsheng, Li, Nengquan, Huang, Zhongyan, Yang, Chuluo
Format: Article
Language:English
Subjects:
Electroluminescence
Emission spectra
Emitters
Narrowband
Quantum efficiency
Resonance
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A new narrowband thermally activated delayed fluorescence emitter, PhCzBN-PO , was developed by incorporating the diphenylphosphine oxide (DPPO) group into a multi-resonance core. The unique properties of DPPO enabled PhCzBN-PO to achieve pure green emission and a nonplanar structure. The resulting electroluminescent devices achieved high external quantum efficiencies up to 32.4% with extremely low efficiency roll-off and pure-green emission with Commission Internationale de L'Eclairage (CIE) coordinates of (0.24, 0.67). A multi-resonance TADF emitter with diphenylphosphine oxide decoration enables high-performance pure green OLEDs with external quantum efficiencies up to 32.4%.
ISSN:1359-7345
1364-548X
1364-548X
DOI:10.1039/d4cc01672f