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US 12,612,532 B2Granted
Optical halogenated polymer thin film with ultra-high refractive index
AssigneeUniversity of Rochester
InventorsWyatt Tenhaeff, Ni Huo
Life of this patent
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Abstract
A high refractive index optical coating made by forming a solid thin layer of a polymer such as P4VP by a process such as iCVD and quaternizing and halogenating the solid layer with vaporized CH2I2, CH3I, and/or CH2Br2 to thereby form a resulting film that has a greatly increased refractive index and other desirable optical and other properties.
Claims29
A coating comprising:
- a polymer film formed of P4VP and thereafter quaternized and halogenated at elevated temperature with one or more of vaporized CH2I2, CH3I, and CH2Br2 to form a resulting film of one or more of P4VP-CH2I2, P4VP-CH3I, and P4VP-CH2Br2:
- wherein said resulting film:
- exhibits a refractive index of 1.65 or more for wavelengths in the 400-800 nm range;
- and
- has a thickness in the 10-2000 nm range.
2 more elements
A film having a selected refractive index, comprising:
- a base polymer with one or more of CH2I2, CH3I, and CH2Br2 introduced into the base polymer to form the film with a thickness in the 10-1000 nm range and that exhibits a refractive index of 1.65 or more for wavelengths in the 400-800 nm range.
A film having a selected refractive index comprising:
- a base polymer containing chemical moieties reactive toward halocarbons, the base polymer forming one or more covalent bonds with one or more halocarbons introduced therein to form a film with a thickness in the 10-1000 nm range and that exhibits a refractive index of 1.68 or more for wavelengths in the 400-800 nm range.
Dependencies are inferred from the claim text.