Photoactive materials containing bulk and quantum-confined semiconductor structures and optoelectronic devices made therefrom
AssigneeInnovalight, Inc.
InventorsDmytro Poplavskyy, Sanjai Sinha, David Jurbergs, Homer Antoniadis
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Abstract
The present invention provides photoactive materials that include quantum-confined semiconductor nanostructures in combination with non-quantum confined and bulk semiconductor structures to enhance or create a type II band offset structure. The photoactive materials are well-suited for use as the photoactive layer in photoactive devices, including photovoltaic devices, photoconductors and photodetectors.
Claims24
A photoactive material comprising a plurality of quantum-confined semiconductor nanostructures and a plurality of non-quantum-confined semiconductor structures, wherein the plurality of quantum-confined semiconductor nanostructures and the plurality of non-quantum confined semiconductor structures have a type II band offset.
An optoelectronic device comprising:
- (a) a first electrode;
- (b) a second electrode;
- and
- (c) a photoactive layer, the photoactive layer comprising a plurality of quantum-confined semiconductor nanostructures and a plurality of non-quantum-confined semiconductor structures having a type II band offset in electrical communication with the first electrode and the second electrode.
A photoactive material comprising a first sublayer and a second sublayer adjacent to the first sublayer, wherein the first sublayer includes a plurality of quantum-confined semiconductor nanostructures, and the second sublayer includes a bulk semiconductor, wherein the plurality of quantum-confined nanostructures and the bulk semiconductor have a type II band offset.
A photoactive material comprising a plurality of quantum-confined semiconductor nanostructures embedded in a layer of bulk semiconductor, wherein the plurality of quantum-confined semiconductor nanostructures and the layer of bulk semiconductor have a type II band offset.
Dependencies are inferred from the claim text.