Table 3.
Summary of photophysical properties and device performance of the tetracoordinated difluoroboron-based blue thermally activated fluorescence (TADF) emitters.
| Emitter |
λmax
[nm] |
PLQY | ΔESTb [eV] | τdμs | Host | EQEmax [%] | CEmax [cdA−1] |
CIE 1931
(x, y) |
References |
|---|---|---|---|---|---|---|---|---|---|
| DTC-Ph(dppy)BF | 468a | 0.71 | 0.27 | – | mCBP (14 wt%) |
8.8 | 17.9 | (0.16, 0.31) | Li P. et al., 2019 |
| NOBF2-Cz | 449a | 0.99 | 0.20 | 132 DPEPO (10 wt%) |
mCBP (10 wt%) |
11.0 | 12.6 | (0.14, 0.16) | Li G. et al., 2019 |
| NOBF2-DTCz | 473a | 0.74 | 0.20 | 126 DPEPO (10 wt%) |
mCBP (10 wt%) |
12.7 | 40.6 | (0.14, 0.21) | Li G. et al., 2019 |
| NOBF2-DPCz | 471a | 0.70 | 0.22 | 110 DPEPO (10 wt%) |
mCBP (10 wt%) |
15.8 | 25.3 | (0.14, 0.28) | Li G. et al., 2019 |
a
Measured in oxygen-free toluene solution (10−5 M).
b
ΔEST = S1-T1.