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US 8,912,036 B2Granted
Growth of ordered crystalline organic films
AssigneeThe Regents of the University of Michigan
InventorsStephen R. Forrest, Richard R. Lunt
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Abstract
There is disclosed methods utilizing organic vapor phase deposition for growing bulk organic crystalline layers for organic photosensitive devices, heterojunctions and films made by such methods, and devices using such heterojunctions. There is also disclosed new methods for manufacturing heterojunctions and organic photosensitive devices, and the heterojunctions and devices manufactured thereby.
Claims22
A method of forming an organic photosensitive optoelectronic device, comprising:
- providing a substrate;
- and
- growing a crystalline layer of a first organic material on the substrate by organic vapor phase deposition, wherein the substrate is maintained at a temperature in a range from −40° C. to 90° C. during the organic vapor phase deposition, and wherein said crystalline layer has crystallinity of long range order of at least about 0.25 cm2 and forms a donor-acceptor heterojunction with a second organic material.
A method for forming a heterojunction for an organic photosensitive device, comprising:
- growing a first crystalline layer of a first organic material on a substrate by organic vapor phase deposition, wherein the substrate is maintained at a temperature ranging from −40° C. to about 90° C. during the organic vapor phase deposition, and wherein said crystalline layer has crystallinity of long range order of at least about 0.25 cm2;
- growing a second oriented and crystalline layer of a second organic material on a surface of the first layer;
- and
- wherein said first crystalline layer is an acceptor or donor material and said second crystalline layer is the opposite of said first crystalline layer.
1 more element
Dependencies are inferred from the claim text.