The incorporation of peripheral DPA groups has been shown to red-shift the emission of MR-TADF compounds by Yasuda and co-workers. For instance, DACz-B (Figure ) shows bright yellow narrowband emission (photoluminescence emission peak wavelength, lPL = 576 nm; full width half-maximum (FWHM) = 44 nm; photoluminescence quantum efficiencies (FPL) of 87%), which is red-shifted compared to Cz-B (lPL= 484 nm; FWHM = 30 nm; FPL of 97%, Figure ) in 1 wt%-doped mCBP film. The OLED with DACz-B produces yellow electroluminescence (peak electroluminescence wavelength, lEL= 571 nm) with a maximum external EL quantum efficiency (EQEmax) of 19.6%. Using a different MR-TADF skeleton, TOAT, Adachi and co-workers introduced different numbers of DPA groups para to the central nitrogen atom of the TOAT core (3, 4 and 5, see Figure ). This led to the realization of red emission with a FWHM 45 nm in toluene for emitter 5 (Figure ). Using the same TOAT core, Zhang and co-workers reported DPA analogues mBDPA-TOAT and pBDPA-TOAT that contained tert-butyl groups on the periphery of the DPA groups, which showed orange emission of 571 (FWHM = 34 nm) and 563 nm (FWHM = 48 nm) in toluene, respectively. However, none of the OLEDs using a TOAT derivative shows an EQEmax>18%. Here we report two emitters containing either three diphenylamine (DPA) or triphenylamine (TPA) donor groups decorating a central MR-TADF core, DiKTa: 3DPA-DiKTa and 3TPA-DiKTa (Figure ). Both emitters behave as MR-TADF compounds, characterized by small DEST, narrow FWHM, and high FPL in 1,3-bis(N-carbazolyl)benzene (mCP) doped films.