Article with transparent conductive oxide coating

Patent metadata

Field	Value
Publication number	US-2016268457-A1
Application number	US-201514963778-A
Country	US
Kind code	A1
Filing date	Dec 9, 2015
Priority date	Mar 12, 2015
Publication date	Sep 15, 2016
Grant date	—

Abstract

A solar cell includes a first substrate having a first surface and a second surface. An underlayer is located over the second surface. A first conductive layer is located over the underlayer. An overlayer is located over the first conductive layer. A semiconductor layer is located over the conductive oxide layer. A second conductive layer is located over the semiconductor layer. The first conductive layer includes a conductive oxide and at least one dopant selected from the group consisting of tungsten, molybdenum, niobium, and/or fluorine.

First claim

What is claimed is:

1 . An article, comprising:
a first substrate having a first surface and a second surface; a first coating over the first surface; and a second coating over the second surface, wherein the second coating comprises a first conductive layer comprising tin oxide and at least one material selected from the group consisting of tungsten, molybdenum, and niobium.

2 . The article of claim 1 , wherein the first conductive oxide layer comprises tin oxide doped with tungsten.

3 . The article of claim 1 , wherein the first conductive layer comprises a first layer comprising tin oxide and tungsten, and a second layer comprising tin oxide and fluorine.

4 . The article of claim 1 , wherein at least one of the first coating and the second coating comprises at least one layer formed in a glass drawdown process having at least one coater located on opposed sides of a glass ribbon flow path.

5 . The article of claim 1 , wherein the second coating comprises:
an underlayer located over the second surface; the first conductive layer over the underlayer; an overlayer over the first conductive layer; a semiconductor layer over the conductive oxide layer; and a second conductive layer over the semiconductor layer.

6 . The article of claim 5 , wherein the article is a solar cell.

7 . The article of claim 5 wherein the underlayer comprises a sodium ion barrier layer comprising silicon oxide.

8 . The article of claim 5 , wherein the underlayer comprises a bottom optical layer comprising an oxide of tin, zinc, silicon, aluminum, titanium, and/or mixtures thereof.

9 . The article of claim 5 , wherein the first conductive layer comprises tin oxide and tungsten.

10 . The article of claim 5 , wherein the first conductive layer comprises a first layer comprising tin oxide and tungsten, and a second layer comprising tin oxide and fluorine.

11 . The article of claim 5 , wherein the overlayer comprises a buffer layer comprising tin oxide and at least one of zinc, indium, gallium, magnesium, and nitrogen.

12 . The article of claim 5 , wherein the second conductive layer comprises a metallic layer.

13 . The article of claim 5 , including an Internal light extraction region in and/or on the second surface of the substrate, wherein the internal light extraction region comprises nanoparticles.

14 . The article of claim 5 , including a functional layer over the first surface of the substrate, wherein the functional layer is selected from the group consisting of an antireflective layer and an external light extraction layer.

15 . The article of claim 5 , wherein the first conductive layer comprises a first region deposited from a first precursor material and a second region deposited from a second precursor material.

16 . The article of claim 15 , wherein the first precursor material comprises MBTC and the second precursor material is selected from the group consisting of TTC and DBTA.

17 . A transparent conductive oxide layer for an electronic device, comprising:
a tin oxide layer doped with a material selected from the group consisting of tungsten, molybdenum, and niobium.

18 . The transparent conductive oxide layer of claim 17 , wherein the transparent conductive oxide layer comprises tin oxide and tungsten.

19 . A solar cell, comprising:
a first substrate having a first surface and a second surface; a first coating over the first surface; and a second coating over the second surface, wherein the second coating comprises:
an underlayer located over the second surface, wherein the underlayer comprises a bottom optical layer comprising an oxide of tin, zinc, silicon, aluminum, titanium, and/or mixtures thereof;
a first conductive layer over the underlayer, wherein the first conductive layer comprises tin oxide and tungsten;
an overlayer over the first conductive layer, wherein the overlayer comprises a buffer layer comprising tin oxide and at least one of zinc, indium, gallium, magnesium, and nitrogen;
a semiconductor layer over the conductive oxide layer, and
a second conductive layer over the semiconductor layer, wherein the second conductive layer comprises a metallic layer.

20 . The solar cell of claim 19 , including an internal light extraction region in and/or on the second surface of the substrate, wherein the internal light extraction region comprises nanoparticles.

Assignees

• Ppg Ind Ohio Inc

Inventors

• Mccamy James W
• Ma Zhixun
• Kabagambe Benjamin
• Koram Kwaku K
• Hung Cheng-Hung
• Nelis Gary J

Classifications

• Y02E10/541

  CuInSe2 material PV cells · CPC title

• C03C2217/94

  Transparent conductive oxide layers [TCO] being part of a multilayer coating · CPC title

• C03C2217/948

  Layers comprising indium tin oxide [ITO] · CPC title

• C03C17/3631

  one layer at least containing a selenide or telluride · CPC title

• C03C17/3411

  with at least two coatings of inorganic materials (C03C17/36, C03C17/42 take precedence) · CPC title