Table 1.
Summary of photophysical properties and device performance of the unbridged boron-type acceptor for blue thermally activated delayed fluorescence (TADF) emitters.
| Emitter |
λmax [nm] |
PLQY |
[eV] |
τd μs |
Host | EQEmax [%] | CEmax [cdA−1] |
CIE 1931 (x, y) |
References |
|---|---|---|---|---|---|---|---|---|---|
| 2DAC-Mes3B | 495a | 1.00 | 0.058 | – | DPEPO (16 wt%) |
21.6 | – | (0.18, 0.43) | Suzuki et al., 2015 |
| DAC-Mes3B | 477a | 0.87 | 0.062 | – | DPEPO (16 wt%) |
14.0 | – | (0.17, 0.30) | Suzuki et al., 2015 |
| DMBP-Ac | – | 0.83 | 0.041 | 6.71a | mCP (6 wt%) |
16.0 | – | (0.14, 0.24) | Kitamoto et al., 2016 |
| CzoB | 466c | 0.84 | 0.124 | 56.3 DPEPO (20 wt%) |
DPEPO (20 wt%) |
22.6 | 28.5 | (0.139, 0.150) | Lee et al., 2017 |
| BuCzoB | 485b | 0.91 | 0.084 | 23.0 DPEPO (10 wt%) |
DPEPO (10 wt%) |
26.1 | 56.9 | (0.142, 0.344) | Lee et al., 2018 |
| BuCzMeoB | 478c | 0.93 | 0.092 | 26.6 DPEPO (20 wt%) |
DPEPO (20 wt%) |
32.8 | 56.8 | (0.135, 0.266) | Lee et al., 2018 |
| CzMeoB | 456c | 0.83 | 0.13 | 76.3 DPEPO (20 wt%) |
DPEPO (20 wt%) |
18.4 | 20.4 | (0.138, 0.140) | Lee et al., 2018 |
| CzOMeoB | 445c | 0.63 | 0.14 | 87.3 DPEPO (20 wt%) |
DPEPO (20 wt%) |
17.3 | 13.1 | (0.150, 0.086) | Lee et al., 2018 |
a
Measured in oxygen-free toluene solution (10−5 M).
b
Measured in 10 wt% doped film in DPEPO host.
c
Measured in 20 wt% doped film in DPEPO host.
dΔEST = S1-T1.