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US 8,465,691 B1Granted
Method for manufacturing indium tin oxide nanowires
AssigneeThe Boeing Company
InventorsChaoyin Zhou, Amanda Phelps, Richard W. Burns, Wen Li
Life of this patent
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Abstract
A method for manufacturing indium tin oxide nanowires by preparing a solution that includes an indium-containing species, a tin-containing species and a polymeric material, wherein the solution has a molar ratio of tin to indium in a range from about 5 to about 15 percent, electrospinning fibers using the solution, and heating the fibers to a calcination temperature and maintaining the fibers at the calcination temperature for a predetermined calcination time.
Claims10
A method for manufacturing indium tin oxide nanowires with a resistivity of about 10−3 Ω-cm, the method comprising:
- preparing a precursor aqueous solution comprising a tin-containing specie and an indium-containing specie wherein the molar ratio of the tin-containing specie to the indium-containing specie is about 5 to about 15%;
- preparing a polymer solution comprising an organic solvent;
- mixing the precursor solution with the polymer solution to produce an electrospinning solution or sol-gel wherein together the tin-containing specie and the indium-containing specie are from about 2% to about 15% by weight of the electrospinning solution or sol-gel;
- electrospinning the electrospinning solution or sol-gel at a relative humidity from about 15 to about 60 percent while irradiating the electrospinning solution or sol-gel with infrared radiation to provide the indium-tin nanowires with a cross-sectional thickness of from about 1 to about 100 micrometers;
- drying the indium tin oxide nanowires at a drying temperature of about 100° C. to about 200° C. to a moisture content of less than about 20% by weight;
- heating the indium tin oxide nanowires, at a rate between about 2 and about 20° C. per minute from the drying temperature to a calcination temperature of from about 700° C. to about 1000° C.;
- and
- maintaining the calcination temperature for a time from two hours to one week to provide indium tin oxide nanowires with a resistivity of about 10−3 Ω-cm.
5 more elements
Dependencies are inferred from the claim text.