Barium copper sulfur fluoride transparent conductive thin films and bulk material

Patent metadata

Field	Value
Publication number	US-9761343-B2
Application number	US-201414245025-A
Country	US
Kind code	B2
Filing date	Apr 4, 2014
Priority date	Sep 19, 2008
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A p-type transparent conductive material can comprise a thin film of BCSF on a substrate where the film has a conductivity of at least 1 S/cm. The substrate may be a plastic substrate, such as a polyethersulfone, polyethylene terephthalate, polyimide, or some other suitable plastic or polymeric substrate.

First claim

What is claimed as new and desired to be protected by Letters Patent of the United States is:

1. A barium copper sulfur fluoride (BCSF) transparent conductive thin film, made by the method comprising:
forming a sputter target by either (a) hot pressing bulk BCSF or (b) hot pressing Cu 2 S, BaS and BaF 2 powders in stoichiometric proportions; and
sputtering a BCSF thin film from the target onto a substrate, wherein after sputtering, the BCSF thin film is soaked in water for at least 30 seconds and then heated at a temperature of at least 100° C. for at least 5 minutes;
wherein the BCSF thin film has a conductivity of approximately 800 S/cm.

2. The BCSF transparent conductive thin film of claim 1 , wherein the substrate is a plastic substrate.

3. The BCSF transparent conductive thin film of claim 2 , wherein the plastic substrate is selected from the group consisting of polyethersulfone, polyethylene terephthalate, and polyimide substrates.

4. The BCSF transparent conductive thin film of claim 1 , wherein a BCSF crystalline phase of the film is cubic in space group Fm3m.

Assignees

• Frantz Jesse A
• Sanghera Jasbinder S
• Nguyen Vinh Q
• Kim Woohong
• Aggarwal Ishwar D
• Us Navy

Inventors

• Frantz Jesse A
• Sanghera Jasbinder S
• Nguyen Vinh Q
• Kim Woohong
• Aggarwal Ishwar D

Classifications

• Y10T428/31786

  Of polyester [e.g., alkyd, etc.] · CPC title

• C23C14/06

  characterised by the coating material ({C23C14/0021} , C23C14/04 take precedence) · CPC title

• C01B9/08

  Fluorides · CPC title

• C23C14/3414

  Metallurgical or chemical aspects of target preparation, e.g. casting, powder metallurgy · CPC title

• H01B1/06 Primary

  mainly consisting of other non-metallic substances · CPC title