Printing and lift-off method for fabricating organic electronic devices.

    Research output: Patent

    Abstract

    A method is presented for forming an org. electronic device by the following steps: (1) forming a neg. image of a desired pattern on a substrate or device layer with a lift-off ink; (2) coating a 1st device layer to be patterned on top of the neg. image; (3) coating at least one further device layer to be patterned on top of the 1st device layer to be patterned; and (4) removing the lift-off ink and unwanted portions of the device layers above it, thereby leaving the desired pattern of device layers. The method gives a device structure in which the device layers to be patterned are self-aligned. The method enables a multiplicity of layers to be patterned in a single set of printing and lift-off steps using 1 pattern which ensures the excellent vertical alignment of edges, which would be difficult to achieve by direct printing. Horizontal alignment can also be achieved. The size of the device features can be reduced below the actual printing resoln. Examples of org. electronic devices include OFETs, OLEDs, memory, sensing elements, solar cells, photo-sensors, photoreceptors for electrophotog. and the like. [on SciFinder (R)]
    Original languageEnglish
    Patent numberPCT Int. Appl.
    Publication statusPublished - 2004

    Keywords

    • Polyanilines Role: DEV (Device component use), USES (Uses) (device conductor; printing and lift-off method for fabricating org. electronic devices); Coating process (electroless; printing and lift-off method for fabricating org. electronic devices); Lithography (microcontact printing; printing and lift-off method for fabricating org. electronic devices); Electric apparatus; Electroluminescent devices; Field effect transistors (org.; printing and lift-off method for fabricating org. electronic devices); Conducting polymers (polypyrroles, device conductor; printing and lift-off method for fabricating org. electronic devices); Conducting polymers (polythiophenes, device conductor; printing and lift-off method for fabricating org. electronic devices); Electrophotographic photoconductors; Ink-jet printing; Lithography; Memory devices; Optical imaging sensors; Printing; Screen printing; Sensors; Solar cells; Sputtering (printing and lift-off method for fabricating org. electronic devices)

    Fingerprint

    Dive into the research topics of 'Printing and lift-off method for fabricating organic electronic devices.'. Together they form a unique fingerprint.

    Cite this