Table 3.
EL parameters of OLEDs.
| Device | Donor (Spacer) | EL λmax,a nm | Turn on voltage VON, V | Luminescence max, cd/m2 | Max. CE, cd/A | Max. PE, lm/W | Max. EQE, % | CIE1931,a (x, y) |
|---|---|---|---|---|---|---|---|---|
| HAT-CN (10 nm)/TCTA (36 nm)/Donor(8 nm)/Donor:PO-T2T(24 nm)/PO-T2T(8 nm)/TPBi(36 nm)/LiF/Al | ||||||||
| A | 2CzCN | 504 | 5.2 | 25,700 | 23.6 | 9.6 | 7.7 | (0.23, 0.43) |
| B | ACzCN | 533 | 5.9 | 27,600 | 21.5 | 9 | 6.4 | (0.33, 0.58) |
| C | PhCzCN | 496 | 5.1 | 19,200 | 14.7 | 5.5 | 4.5 | (0.26,0.51) |
| HAT-CN(10 nm)/TCTA (36 nm)/ 4CzTPN-Ph (1 nm)/Donor(8 nm)/Donor:PO-T2T(24 nm)/PO-T2T(8 nm)/TPBi(36 nm)/LiF/Al | ||||||||
| D | 2CzCN | 504 | 4.4 | 28,500 | 14.7 | 6.7 | 5 | (0.25, 0.49) |
| E | ACzCN | 529 | 5.6 | 23,000 | 22.4 | 10.2 | 6.5 | (0.31, 0.57) |
| F | PhCzCN | 494/577 | 5.8 | 20,000 | 7.8 | 2.9 | 3.1 | (0.36, 0.44) |
a
at applied voltage of 9 V.