Table 4.
Summary of photophysical and device characteristics of the oxygen-based fully bridged boron type blue thermally activated delayed fluorescence (TADF) emitters.
| Emitter |
λmax [nm] |
PLQY |
[eV] |
τd μs |
Host | EQEmax [%] | CEmax [cdA−1] |
CIE 1931 (x, y) |
References |
|---|---|---|---|---|---|---|---|---|---|
| DOBNA-PX | 492c | 0.92 | 0.06 | 31.8 PMMA (1wt%) |
CBP (20 wt%) |
13.9 | 40.1 | – | Hirai et al., 2015 |
| TDBA-Ac | 458a | 0.93 | 0.06 | 1.82 DBFPO (20 wt%) |
DBFPO (20 wt%) |
25.71 | 27.73 | (0.14, 0.15) | Ahn et al., 2019a |
| TDBA-DI | 456a | 0.99 | 0.05 | 1.79 DBFPO (20 wt%) |
DBFPO (20 wt%) |
38.15 | 64.38 | (0.15, 0.28) | Ahn et al., 2019a |
| DBA-DI | 467a | 95.3 | 0.03 | 1.25 mCBP-CN (30 wt%) |
mCBP-CN: DDBFT (30 wt%) |
26.4 | – | (0.17, 0.40) | Ahn et al., 2020 |
| 3CzTB | 433a | 0.87 | 0.23 | 9.32 DBFPO (20 wt%) |
DBFPO (20 wt%) |
29.1 | 36.4 | (0.14, 0.19) | Karthik et al., 2020 |
| M3CzB | 445a | 0.92 | 0.14 | 7.84 DBFPO (20 wt%) |
DBFPO (20 wt%) |
30.7 | 46.7 | (0.14, 0.26) | Karthik et al., 2020 |
| OBA-O | 444a | 0.84 | 0.09 | 4.14 mCP (10 wt%) |
mCP (5 wt%) |
17.8 | 33.2 | (0.17, 0.17) | Song et al., 2019 |
| OBA-S | 456a | 0.75 | 0.09 | 4.80 mCP (10 wt%) |
mCP (5 wt%) |
4.4 | 6.3 | (0.20, 0.31) | Song et al., 2019 |
| OBA-BrO | 470a | 0.92 | 0.04 | 3.74 mCP (10 wt%) |
mCP (5 wt%) |
22.5 | 49.2 | (0.21, 0.38) | Song et al., 2019 |
| OBA-BrS | 478a | 0.55 | 0.07 | 0.81 mCP (10 wt%) |
mCP (5 wt%) |
9.2 | 20.3 | (0.29, 0.46) | Song et al., 2019 |
| m-AC-DBNA | 492b | 0.89 | 0.009 | 7.6 BCPO (5 wt%) |
BCPO (10 wt%) |
17.1 | 42.0 | (0.18, 0.42) | Meng et al., 2019 |
| m'-AC-DBNA | 498b | 0.96 | 0.031 | 1.5 BCPO (5 wt%) |
BCPO (10 wt%) |
14.1 | 35.3 | (0.18, 0.39) | Meng et al., 2019 |
| p-AC-DBNA | 496b | 0.87 | 0.009 | 7.8 BCPO (5 wt%) |
BCPO (10 wt%) |
20.5 | 47.4 | (0.17, 0.36) | Meng et al., 2019 |
a
Measured in toluene solvent.
b
Measured in 10 wt% doped film in BCPO host.
c
Measured in 1 wt% doped film in PMMA host.
dΔEST = S1-T1.