公开(公告)号：US20250066631A1

公开(公告)日：2025-02-27

申请号：US18930008

申请日：2024-10-29

Applicant: Meta Platforms Technologies, LLC

Inventor： Alejo Lifschitz Arribio

IPC: C09D11/322 ,  C01G19/00 ,  C09D11/36 ,  G02B1/10 ,  G02B27/01

Abstract: A method of forming a variable refractive index thin film includes forming a coating including a tin (II) halide precursor and a liquid solvent, where the composition and/or concentration of the liquid solvent may vary spatially over one or more lateral dimension(s) of the coating. Annealing at elevated temperature may induce densification of the coating and the formation of a thin film having a variable refractive index. Local variability in the refractive index may be correlated to the location oxidation state of tin within the thin film, which may be related to the conformation of the liquid solvent.

公开(公告)号：US12187906B2

公开(公告)日：2025-01-07

申请号：US18069148

申请日：2022-12-20

Applicant: Meta Platforms Technologies, LLC

Inventor： Alejo Lifschitz Arribio

IPC: C09D11/322 ,  C01G19/00 ,  C09D11/36 ,  G02B1/10 ,  G02B27/01

Abstract: A method of forming a variable refractive index thin film includes forming a coating including a tin (II) halide precursor and a liquid solvent, where the composition and/or concentration of the liquid solvent may vary spatially over one or more lateral dimension(s) of the coating. Annealing at elevated temperature may induce densification of the coating and the formation of a thin film having a variable refractive index. Local variability in the refractive index may be correlated to the location oxidation state of tin within the thin film, which may be related to the conformation of the liquid solvent.

公开(公告)号：US20230340286A1

公开(公告)日：2023-10-26

申请号：US18069148

申请日：2022-12-20

Applicant: Meta Platforms Technologies, LLC

Inventor： Alejo Lifschitz Arribio

IPC: G02B1/10 ,  C09D11/36 ,  C09D11/322 ,  C01G19/00

CPC classification number: C09D11/322 ,  C01G19/006 ,  C09D11/36 ,  G02B1/10 ,  G02B27/0172

Abstract: A method of forming a variable refractive index thin film includes forming a coating including a tin (II) halide precursor and a liquid solvent, where the composition and/or concentration of the liquid solvent may vary spatially over one or more lateral dimension(s) of the coating. Annealing at elevated temperature may induce densification of the coating and the formation of a thin film having a variable refractive index. Local variability in the refractive index may be correlated to the location oxidation state of tin within the thin film, which may be related to the conformation of the liquid solvent.

公开(公告)号：US12085744B1

公开(公告)日：2024-09-10

申请号：US17582614

申请日：2022-01-24

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Alejo Lifschitz Arribio ,  Keren Zhang ,  Jonathan Onorato ,  Anthony Phan ,  Vincent Overney

IPC: G02B27/01 ,  C23C18/12 ,  F21V8/00

CPC classification number: G02B6/0036 ,  C23C18/1204 ,  C23C18/1245 ,  C23C18/1254 ,  G02B27/0172

Abstract: Various systems and methods relating to a feature fill sol-gel material are provided herein. The feature fill sol-gel material may form a superconformal sol-gel coating. The feature fill sol-gel material may include a first titanium precursor composed of Titanium(IV) and an inorganic ligand. The feature fill sol-gel material may be formed by dissolving or suspending the first titanium precursor in a solvent. The feature fill sol-gel material may be annealed to form the superconformal sol-gel coating. The superconformal sol-gel coating may be an optically transparent coating having an absorbance at a wavelength of 450 nm of less than 0.2% per 150 nm and a refractive index ranging from 1.65 to 2.20.