Jong Hyun Lim, Jin Wook Kim, Geum Jae Yoon, Ayse Turak, Woo Young Kim, "Effect of various red phosphorescent dopants in single emissive white phosphorescent organic light-emitting devices," Chin. Opt. Lett. 15, 051602 (2017)
- Chinese Optics Letters
- Vol. 15, Issue 5, 051602 (2017)
Fig. 1. Schematic structure of white PHOLEDs and configuration molecules of organic materials in EML.
Fig. 2. (a–c) Predicted white OLED devices A, B, and C spectra (black line) combining the PL of the RGB of each dopant and the comparison based upon the CMF formula of X, Y, and Z.
Fig. 3. (a–c) Luminous efficiencies – luminance characteristics of white PHOLEDs with different red phosphorescent dopants and (d) a comparison between optimized white PHOLEDs with 0.6%, 0.4%, and 0.8% dopant concentration, respectively.
Fig. 4. CIE XY Ir ( piq ) 3 Ir ( pq ) 2 ( acac ) Ir ( btp ) 2 ( acac )
Fig. 5. PL spectrum of mCP, FIrpic, and Ir ( ppy ) 3 Ir ( piq ) 3 Ir ( pq ) 2 ( acac ) Ir ( btp ) 2 ( acac )
Fig. 6. J-V characteristics of white PHOLEDs with different red phosphorescent dopants: (a) Ir ( piq ) 3 Ir ( pq ) 2 ( acac ) Ir ( btp ) 2 ( acac )
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Table 1. Schematic of the Different Red Phosphorescent Dopant Materials and Concentration Used in White PHOLEDs
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Table 2. Summary of Electrical and Optical Properties of Optimized White PHOLEDs with Different Red Dopants A3, B2, and C4
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