Three-color organic light-emitting diodes patterned by masked dye diffusion

A method of masked dye diffusion to locally pattern the emissive color of organic light-emitting devices (OLEDs) over a large area is introduced. By using a large-area diffusion source, which may be a spin-coated doped polymer film, the entire process of masked diffusion of dye into a polymer film of an OLED to create an integrated three-color device has been demonstrated at atmospheric pressure. The materials used to demonstrate this method are the polymer poly(9-vinylcarbazole) combined with electron transport molecules, and the dyes bimane, coumarin 6, and Nile red.

[1]  J. Sturm,et al.  Integrated three-color organic light-emitting devices , 1996 .

[2]  T. Pavlopoulos,et al.  Laser action from syn-(methyl,methyl) bimane , 1986 .

[3]  M. Štolka,et al.  Poly(N-vinylcarbazole) , 1981 .

[4]  T. Pavlopoulos,et al.  Laser action from syn‐(methyl,chloro) bimane , 1987 .

[5]  James C. Sturm,et al.  Local tuning of organic light-emitting diode color by dye droplet application , 1998 .

[6]  M. Stolka,et al.  Electroluminescence from single layer molecularly doped polymer films , 1995 .

[7]  Chung-Chih Wu,et al.  Ink-jet printing of doped polymers for organic light emitting devices , 1998 .

[8]  David G Lidzey,et al.  Photoprocessed and micropatterned conjugated polymer LEDs , 1996 .

[9]  Yang Yang,et al.  Polymer electroluminescent devices processed by inkjet printing: I. Polymer light-emitting logo , 1998 .

[10]  Ching Wan Tang,et al.  Doped organic electroluminescent devices with improved stability , 1997 .

[11]  Ullrich Scherf,et al.  Efficient white light-emitting diodes realized with new processable blends of conjugated polymers , 1997 .

[12]  A. Dodabalapur,et al.  Electroluminescence from organic semiconductors in patterned microcavities , 1994 .

[13]  R. N. Marks,et al.  Light-emitting diodes based on conjugated polymers , 1990, Nature.

[14]  C. Tang,et al.  Organic Electroluminescent Diodes , 1987 .

[15]  Katsutoshi Nagai,et al.  Multilayer White Light-Emitting Organic Electroluminescent Device , 1995, Science.

[16]  Chung-Chih Wu,et al.  Efficient organic electroluminescent devices using single-layer doped polymer thin films with bipolar carrier transport abilities , 1997 .