Organic photosensitive optoelectronic device with a charge blocking layer
First Claim
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1. An organic photosensitive optoelectronic device comprising:
- two electrodes in superposed relation;
a hole transport layer between the two electrodes, the hole transport layer formed of a first photoconductive organic semiconductor material;
an electron transport layer between the two electrodes and adjacent to the hole transport layer, the electron transport layer formed of a second photoconductive organic semiconductor material; and
at least one exciton blocking layer between the two electrodes and adjacent to at least one of the electrodes.
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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.
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Citations
24 Claims
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1. An organic photosensitive optoelectronic device comprising:
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two electrodes in superposed relation;
a hole transport layer between the two electrodes, the hole transport layer formed of a first photoconductive organic semiconductor material;
an electron transport layer between the two electrodes and adjacent to the hole transport layer, the electron transport layer formed of a second photoconductive organic semiconductor material; and
at least one exciton blocking layer between the two electrodes and adjacent to at least one of the electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12)
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- 11. A stacked organic photosensitive optoelectronic device comprised of a plurality of photosensitive optoelectronic subcells wherein at least one subcell includes an exciton blocking layer.
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15. An organic photodetector comprising:
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a cathode and an anode in superposed relation;
a plurality of pairs of a hole transporting layer adjacent to an electron transporting layer, the pairs disposed between the cathode and the anode; and
an exciton blocking disposed between one of the cathode and the anode, and the plurality of pairs.
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Specification