Steric groups fusion strategy for green multi-resonance emitters toward efficient OLEDs with narrowband emission

Recent Progress of Thermally Activated Delayed Fluorescent Materials with Narrowband Red, Green, and Blue (RGB) Emission

“…An ultrapure green OLED exploiting DBTN-2 as an emitter showed an emission at 520 nm (fwhm = 29 nm) with CIE coordinates of (0.19, 0. 101 The materials emitted at 500 nm with fwhm of 22 nm for MFCzBN and 23 nm for SFCzBN. Their corresponding devices showed emissions both at 508 nm (fwhm = 34 nm) and achieved high maximum EQEs of 24.3 and 24.7%, respectively.…”

“…The two materials emitted at 498 and 505 nm with fwhm of 26 and 25 nm in toluene, respectively, and the OLED based on the DSpDCz revealed a green emission at 505 nm (fwhm = 31 nm) with the maximum EQE of 19.0%. Yang et al developed two green emitters MFCzBN and SFCzBN by integrating steric groups into the classic framework of BCzBN . The materials emitted at 500 nm with fwhm of 22 nm for MFCzBN and 23 nm for SFCzBN .…”