Ravi G Gupta

US Patent:

20110250435, Oct 13, 2011

Filed:

Oct 9, 2009

Appl. No.:

13/126374

Inventors:

Jiaxin Jason Ge - Lower Providence PA, US
Michael T. Burchill - Langhorne PA, US
Ravi R. Gupta - Pottstown PA, US
Scott Gaboury - Blue Bell PA, US

International Classification:

B32B 5/16
B05D 5/06
B82Y 99/00

US Classification:

428323, 427162, 977773

Abstract:

The invention relates to a thin, nano-structured coating that provides optical light efficiency enhancement. The dried coating contains nano-structures that provide a very low haze level of less than 2 percent, and a light transmission improvement of at least 1% over the non-coated substrate. For the nano-structured coating on an acrylic substrate the transmission is greater than 93 percent, and preferably greater than 94 percent. The coatings of the invention are especially useful for optical electronic displays and photovoltaic modules.

US Patent:

20120024353, Feb 2, 2012

Filed:

Mar 1, 2010

Appl. No.:

13/254101

Inventors:

Jiaxin Jason Ge - Lover Providence PA, US
Michael T. Burchill - Langhorne PA, US
Ravi R. Gupta - Pottstown PA, US
Steven B. Lacock - Boyertown PA, US
Mark A. Aubart - West Chester PA, US
Robert A. Wanat - Langhorne PA, US

Assignee:

Arkema France - Colombes

International Classification:

H01L 31/048

US Classification:

136251

Abstract:

The invention relates to high Tg monolithic and multi-layer thermoformable film or sheet useful as a backsheet on a photovoltaic module (PV). A methacrylic-based material is preferred. The film or sheet is formed of a composition having a Tg greater than 110 C. The methacrylic composition may be a blend of a polymethyl methacrylate polymer and a miscible or semi-miscible high Tg polymer, or may be a copolymer containing primarily methyl methacrylate monomer units. The backsheet is optionally covered with a fluoropolymer or acrylic/fiuoropolymer covering on the outside (side facing the environment). The back-sheet can be clear, white, and/or pigmented. The film or sheet is especially useful in concentrating photovoltaic modules (CPV), and is also useful in thin film photovoltaic modules.