Infrared and Laser Engineering, Volume. 52, Issue 12, 20230222(2023)
Highly-efficient hybrid TADF/phosphorescent white organic light-emitting diodes based on an exciplex host
Figures & Tables(8)
Fig. 1. EL performance of blue devices. (a) Current density-voltage-luminance characteristics of B1, B2; (b) EQE-current density curves (Insert: EL spectra of blue and exciplex devices)
Fig. 3. EL performance of hybrid TADF/phosphorescent WOLEDs. (a) Current density-voltage-luminance characteristics of W1-W4; (b) EQE-luminance-power efficiency curves; (c) EL spectra of W1-W4 in 5 mA·cm−2; (d) EL spectra of W2 in different luminance
Fig. 4. EL performance of device W5. (a) Current density-voltage-luminance characteristics of W5; (b) EQE-luminance curves; (c) Current efficiency-luminance-power efficiency curves; (d) EL spectra of W2 and W5 at a luminance of 1 000 cd·m−2
Fig. 5. The working mechanism of hybrid TADF/phosphorescent WOLEDs
Fig. 6. EL performance of W6. (a) Current density-voltage-luminance characteristics of W6; (b) EQE-luminance curves (Insert: EL spectra of W6 in different luminance); (c) Current efficiency-luminance-power efficiency curves
Table 1. Performance of blue devices
View tableView in ArticleTable 1. Performance of blue devices
Device Vona) /V ƞEQEb) ƞCEb) /cd·A−1 ƞPEb) /lm·W−1 ƞEQEc) a): At a luminance of 100 cd·m−2, b): Efficiencies of the maximum, c): At 30 mA·cm−2 B1 3.5 16.8% 33.9 33.3 4.6% B2 3.7 19.5% 36.7 33.5 4.7%
Table 2. Performance of hybrid TADF/phosphorescent WOLEDs
View tableView in ArticleTable 2. Performance of hybrid TADF/phosphorescent WOLEDs
Device Vona) /V ƞEQEb) ƞCEb) /cd·A−1 ƞPEb) /lm·W−1 CIEc) CRIc) CCTc) /K a): At a luminance of 100 cd·m−2, b): Efficiencies of the maximum and at 1000 cd·m−2, c): At a luminance of 1000 cd·m−2 W1 3.6 15.0%/12.0% 34.9/28.8 32.7/20.1 (0.379, 0.486) 80 4532 W2 3.6 17.5%/12.3% 37.1/26.6 36.4/18.2 (0.451, 0.428) 88 2958 W3 3.7 20.9%/16.6% 40.4/32.0 38.6/20.5 (0.506, 0.411) 81 2146 W4 3.6 16.5%/11.6% 41.1/28.6 40.3/19.5 (0.355, 0.444) 83 4936 W5 3.7 14.0%/9.2% 30.5/20.3 29.0/14.2 (0.360, 0.431) 89 4777 W6 2.9 19.3%/14.3% 45.2/33.9 52.6/31.3 (0.385, 0.434) 89 4229
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Yuanbo Zhang, Yuan Liu, Yanan Li, Haodong Bian, Jiarui Li, Lianqing Zhu. Highly-efficient hybrid TADF/phosphorescent white organic light-emitting diodes based on an exciplex host[J]. Infrared and Laser Engineering, 2023, 52(12): 20230222
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Received: Apr. 16, 2023
Accepted: --
Published Online: Feb. 23, 2024
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