Title: Multilayer heterostructures and their manufacture

Abstract

A method of synthesizing multilayer heterostructures including an inorganic oxide layer residing on a solid substrate is described. Exemplary embodiments include producing an inorganic oxide layer on a solid substrate by a liquid coating process under relatively mild conditions. The relatively mild conditions include temperatures below 225.degree. C. and pressures above 9.4 mb. In an exemplary embodiment, a solution of diethyl aluminum ethoxide in anhydrous diglyme is applied to a flexible solid substrate by slot-die coating at ambient atmospheric pressure, and the diglyme removed by evaporation. An AlO.sub.x layer is formed by subjecting material remaining on the solid substrate to a relatively mild oven temperature of approximately 150.degree. C. The resulting AlO.sub.x layer exhibits relatively high light transmittance and relatively low vapor transmission rates for water. An exemplary embodiment of a flexible solid substrate is polyethylene napthalate (PEN). The PEN is not substantially adversely affected by exposure to 150.degree. C

Inventors:

Hammond, Scott R; Reese, Matthew; Rupert, Benjamin; Miedaner, Alexander; Curtis, Clavin; Olson, Dana; Ginley, David S

Issue Date:

2015-11-04

Research Org.:

National Renewable Energy Lab. (NREL), Golden, CO (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1224882

Patent Number(s):

9175397

Application Number:

13/048,251

Assignee:

Alliance for Sustainable Energy, LLC (

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B05 - SPRAYING OR ATOMISING IN GENERAL B05D - PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL

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B - PERFORMING OPERATIONS B05 - SPRAYING OR ATOMISING IN GENERAL B05D - PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL

B05D7/52 - {Two layers}
B05D7/22 - to internal surfaces, e.g. of tubes
B05D7/02 - to macromolecular substances, e.g. rubber

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL

C23C18/1225 - {Deposition of multilayers of inorganic material}
C23C18/1295 - {with after-treatment of the deposited inorganic material}
C23C18/1233 - {Organic substrates}
C23C18/1216 - {Metal oxides

B - PERFORMING OPERATIONS B05 - SPRAYING OR ATOMISING IN GENERAL B05D - PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL

B05D1/38 - with intermediate treatment
B05D2350/60 - Adding a layer before coating

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL

C23C18/12 - characterised by the deposition of inorganic material other than metallic material

B - PERFORMING OPERATIONS B05 - SPRAYING OR ATOMISING IN GENERAL B05D - PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL

B05D7/04 - to surfaces of films or sheets
B05D3/0254 - {After-treatment}

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DOE Contract Number:  

AC36-08GO28308

Resource Type:

Patent

Resource Relation:

Patent File Date: 2011 Mar 15

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE