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US 6,844,025 B2Granted
Method of fabricating an organic photosensitive optoelectronic device with an exciton blocking layer
AssigneePrinceton University
InventorsStephen R. Forrest, Vladimir Bulovic, Peter Peumans
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Abstract
Organic photosensitive optoelectronic devices (“OPODs”) are disclosed which include an exciton blocking layer to enhance device efficiency. Single heterostructure, stacked and wave-guide type embodiments are disclosed. Photodetector OPODs having multilayer structures and an exciton blocking layer are also disclosed. Guidelines for selection of exciton blocking layers are provided.
Claims18
A method of fabricating an organic photosensitive optoelectronic device, the method comprising:
- depositing a hole transport layer over a first electrode, the hole transport layer formed of a first photoconductive organic semiconductor material;
- depositing an electron transport layer over the hole transport layer, the electron transport layer formed of a second photoconductive organic semiconductor material;
- depositing a first exciton blocking layer over the electron transport layer;
- and depositing a second electrode over the first exciton blocking layer.
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A method of fabricating an organic photosensitive optoelectronic device, the method comprising:
- depositing a first exciton blocking layer over a first electrode;
- depositing a hole transport layer over the first exciton blocking layer, the hole transport layer formed of a first photoconductive organic semiconductor material;
- depositing an electron transport layer over the hole transport layer, the electron transport layer formed of a second photoconductive organic semiconductor material;
- and
- depositing a second electrode over the electron transport layer.
2 more elements
Dependencies are inferred from the claim text.