# US 2019/0171079 A1 · Counter electrode for electrochromic devices

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2019/0171079 A1
- Document ID: US20190171079A1
- Status: Published application
- Kind: A1
- Application number: 16/250,738
- Filed: 2019-01-17
- Published: 2019-06-06
- Earliest claimed: 2014-11-26
- Assignees: View, Inc.
- Applicants: View, Inc.
- Inventors: Dane Gillaspie; Sridhar K. Kailasam; Robert T. Rozbicki
- Web page: https://patentgrep.com/patent/US20190171079A1

## CPC

- G02F 1/1524: Transition metal compounds
- C01G 33/006: {Compounds containing niobium, with or without oxygen or hydrogen, and containing two or more other elements}
- G02F 1/1506: caused by electrodeposition, e.g. electrolytic deposition of an inorganic material on or close to an electrode
- C01P 2004/64: Nanometer sized, i.e. from 1-100 nanometer
- G02F 2001/15145: {the electrochromic layer comprises a mixture of anodic and cathodic compounds}
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- C01G: COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F (metal hydrides {monoborane, diborane or addition complexes thereof} C01B6/00; salts of oxyacids of halogens C01B11/00; peroxides, salts or peroxyacids C01B15/00; thiosulfates, dithionites, polythionates C01B17/64; compounds containing selenium, or tellurium C01B19/00; binary compounds of nitrogen with metals C01B21/06; azides C01B21/08; {compounds containing nitrogen, other non-metals and metal C01B21/082}; metal amides C01B21/092; nitrites C01B21/50; {compounds of noble gases C01B23/0005}; phosphides C01B25/08; salts of oxyacids of phosphorus C01B25/16; carbides C01B32/90; compounds containing silicon C01B33/00; compounds containing boron C01B35/00; compounds having molecular sieve properties but not having base-exchange properties C01B37/00; compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites, C01B39/00; cyanides C01C3/08; salts of cyanamide C01C3/16; thiocyanates C01C3/20)
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

## Abstract

The embodiments herein relate to electrochromic stacks, electrochromic devices, and methods and apparatus for making such stacks and devices. In various embodiments, an anodically coloring layer in an electrochromic stack or device is fabricated to include nickel-tungsten-niobium-oxide (NiWNbO). This material is particularly beneficial in that it is very transparent in its clear state.

## Claims

### Claim 1

A composition of matter comprising:
(a) nickel;
(b) tungsten;
(c) niobium; and
(d) oxygen,
wherein the composition comprises an atomic ratio of Ni:(W+Nb) that is between about 1.5:1 and 3:1, and
wherein the composition comprises an atomic ratio of W:Nb that is between about 0.2:1 and 1:1.

### Claim 2 (depends on 1)

The composition of claim 1, wherein the atomic ratio of Ni:(W+Nb) is between about 1.5:1 and 2.5:1.

### Claim 3 (depends on 2)

The composition of claim 2, wherein the atomic ratio of Ni:(W+Nb) is between about 1.8:1 and 2.5:1.

### Claim 4 (depends on 3)

The composition of claim 3, wherein the atomic ratio of Ni:(W+Nb) is between about 2:1 and 2.5:1.

### Claim 5 (depends on 1)

The composition of claim 1, wherein the atomic ratio of Ni:(W+Nb) is between about 2:1 and 3:1.

### Claim 6 (depends on 1)

The composition of claim 1, provided in a layer having a thickness between about 50-650 nm.

### Claim 7 (depends on 1)

The composition of claim 1, wherein the composition is formed through sputtering one or more sputter targets.

### Claim 8 (depends on 1)

The composition of claim 1, wherein the composition becomes tinted in response to an applied anodic potential.

### Claim 9 (depends on 1)

The composition of claim 1, wherein the composition is amorphous.

### Claim 10 (depends on 1)

The composition of claim 1, wherein the composition is provided as an amorphous matrix with nanocrystals distributed throughout.

### Claim 11 (depends on 10)

The composition of claim 10, wherein the nanocrystals have a mean diameter of about 50 nm or less.

### Claim 12 (depends on 11)

The composition of claim 11, wherein the nanocrystals have a mean diameter between about 1-10 nm.