17 September 2002 Influence of emissive hole-transporting materials on the electrical and luminescent performance of highly efficient white light organic light-emitting diodes
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Abstract
An emissive hole-transporting material with a dopant was proposed for realizing highly efficient and relatively pure white-light organic light-emitting diode (OLED). The device structure included ITO/N, N'-diphenyl-N, N'-bis(1-naphthyl-phenyl)-(1, 1'-biphenyl)-4,4'-diamine (NPB)/NPB doped with 4-Dicyanomethylene-2-methyl-6-[2, 3, 6, 7-tetra-hydro-1H, 5H-behzo[ij]-quinolizin-8-yl)vinyl]-4H-pyran (DCM2) (NPB:DCM2)/bathocuproine (BCP)/tris-(8-hydroxyquinoline) aluminum (Alq3)/Mg/Ag. By appropriately controlling the DCM2 doping concentration as well as thickness of the blue-red-emitting layer of NPB:DCM2, the white-light OLED has a relatively stable white color even the operating voltages change from 9 to 18 V.
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Ching-Wu Wang, Ching-Wu Wang, Shih-Fang Chen, Shih-Fang Chen, Wen-Fa Kuo, Wen-Fa Kuo, } "Influence of emissive hole-transporting materials on the electrical and luminescent performance of highly efficient white light organic light-emitting diodes", Proc. SPIE 4918, Materials, Devices, and Systems for Display and Lighting, (17 September 2002); doi: 10.1117/12.483066; https://doi.org/10.1117/12.483066
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