Color tunability in multilayer OLED based on DCM doped in a PVK matrix

18th International School on Condensed Matter Physics: "Challenges of Nanoscale Science: Theory, Materials, Applications"

Petrova, P.K.^1 ; Ivanov, P.I.^1 ; Tomova, R.L.^1

Institute of Optical Materials and Technologies Acad. J.Malinowski, Bulgarian Academy of Sciences, Acad. G. Bonchev str. bl. 109, Sofia

1113, Bulgaria^1

关键词: Benzothiazoles;    Chromaticity coordinates;    Color tunability;    Dicyanomethylene;    Electron transporting layer;    Hole blocking layers;    Hole-transporting layers;    Multilayer organic light emitting diodes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/558/1/012028/pdf
DOI  :  10.1088/1742-6596/558/1/012028

来源: IOP

【 摘 要 】

In this work, we present our achievements in color tunability in novel multilayer organic light-emitting diodes (OLEDs) based on DCM (4-(Dicyanomethylene)-2-methyl-6-[p-(dimethylamino)styryl]-4H-pyran) as red emitter doped in a composite PVK:TPD holetransporting layer, DPVBi (4,4'-Bis(2,2-diphenylvinyl)-1,1'-biphenyl) as a separate blue emitting layer, BAlq (aluminum bis(2-methyl-8-quinolinate)-4-phenylphenolate) as holeblocking layer and blue emitter at the same time, and Zn(BTz)2(zinc bis(2-(2-hydroxyphenyl) benzothiazole)) as yellow emitter and electron transporting layer. By modification of the OLED structure and changing the DCM doped concentration in the matrix (in the range of 0 up to 5 %) the color tunability of OLED structures has been obtained. The efficiencies, luminance and chromaticity coordinates of the fabricated OLED structures have been specified.