High Efficiency Green Organic Light-Emitting Diode Based on Double Light-Emitting Layers Structure

Fig. 2. Electroluminescence performance of device A, B, and C. (a) Current density-current efficiency curve; (b) voltage-current density curve; (c) voltage - luminance curve; (d) normalized emission spectra at the current density of 10 mA/cm²

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Fig. 3. Electroluminescence performance of device D, E, and F. (a) Current density-current efficiency curve; (b) voltage-current density curve; (c) voltage-luminance curve; (d) normalized emission spectra at the current density of 10 mA/cm²

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Fig. 4. Carriers mechanism diagram of OLEDs

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Table 1. Main performance parameters of device A, B, and C
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Table 1. Main performance parameters of device A, B, and C
Device Turn-onvoltage /V Brightness /(cd/m²) Currentefficiency /(cd/A) EQE /% Powerefficiency /(lm/W)
A 3.0 8080 23.51 6.53 15.0
B 3.0 8673 29.08 7.99 19.2
C 3.0 8638 28.14 7.82 19.1

Table 2. Main performance parameters of device D, E, and F
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Table 2. Main performance parameters of device D, E, and F
Device Turn-onvoltage /V Brightness /(cd/m²) Currentefficiency /(cd/A) EQE /% Powerefficiency /(lm/W)
D 3.1 12631 35.87 10.05 27.64
E 3.1 12600 37.15 10.34 28.23
F 3.1 11760 36.23 10.18 28.53

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Dicheng Zhou, Jing Shao. High Efficiency Green Organic Light-Emitting Diode Based on Double Light-Emitting Layers Structure[J]. Laser & Optoelectronics Progress, 2020, 57(15): 152304

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