Method of making an organic thin film transistor and article made by the method
AssigneeLucent Technologies Inc.
InventorZhenan Bao
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Abstract
Thin film transistors in which the active layer is an ordered film of a phthalocyanine coordination compound with a field-effect mobility greater than 10.sup.-3 cm.sup.2 /Vs and a conductivity in the range of about 10.sup.-9 S/cm to about 10.sup.-7 S/cm at 20.degree. C. are disclosed. Examples of suitable pthalocyanines include copper phthalocyanine, zinc phthalocyanine, hydrogen phthalocyanine, and tin phthalocyanine. Thin film devices made of these materials have an on/off ratio of at least about 10.sup.4. It is advantageous if the device is fabricated using a process in which the substrate is heated to a temperature in the range of about 30.degree. C. to about 200.degree. C. when the film is formed thereon.
Claims4
A process for fabricating a device comprising:
- forming a layer of an ordered phthalocyanine coordination compound selected from the group consisting of copper phthalocyanine, zinc phthalocyanine, hydrogen phthalocyanine, and tin phthalocyanine on a substrate heated to a temperature in the range of about 30.degree. C. to about 200.degree. C. and forming contacts on the substrate for applying current through the layer of ordered phthalocyanine coordination compound.
Dependencies are inferred from the claim text.