Synthesis of CdSe/ZnS Core/Shell Semiconductor Nanowires
AssigneeUS Nano LLC
InventorsAnthony C. Onicha, Louise E. Sinks, Stefanie L. Weber
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Abstract
The present disclosure provides systems, processes, articles of manufacture, and compositions that relate to core/shell semiconductor nanowires. Specifically, the disclosure provides a novel semiconductor material, CdSe/ZnS core/shell nanowires, as well as a method of preparation thereof. The disclosure also provides a new continuous flow method of preparing core/shell nanowires, including CdSe/CdS core/shell nanowire and CdSe/ZnS core/shell nanowires.
Claims20
A coated nanowire comprising:
- a nanowire body comprising a cadmium semiconductive material, wherein the nanowire body includes an outer surface;
- and
- a semiconductive coating on at least a portion of the outer surface of the nanowire body, wherein the semiconductive coating includes zinc.
A continuous flow method of manufacturing coated nanowires, wherein the method comprises:
- providing a nanowire solution including a plurality of nanowires;
- combining the nanowire solution and a shell precursor solution in a second continuous flow reactor to form a combined solution;
- wherein the second continuous flow reactor is maintained at a temperature between, and including, 90° C. to 250° C.;
- and
- annealing the shell precursor solution to an outer surface of the nanowires to form coated nanowires.
A method of producing nanowires, the method comprising:
- combining a cadmium precursor solution, a selenium precursor solution, and a catalyst solution at a temperature between, and including 200° C. to 300° C., to create a solution including a plurality of CdSe nanowires,
- wherein the cadmium precursor solution includes cadmium oxide, trioctylphosphine oxide, octadecene, and diphenyl ether,
- wherein the selenium precursor solution includes selenium-octadecene,
- wherein the catalyst solution includes a bismuth compound,
- combining the plurality of nanowires and a shell precursor solution at a temperature between, and including, 90° C. to 250° C. to form a combined solution;
- and
- annealing the shell precursor solution to the nanowires to form a plurality of coated CdSe nanowires.
Dependencies are inferred from the claim text.