US2013061927A1PendingUtilityA1

Multilayer Thin-Film Back Contact System For Flexible Photoboltaic Devices On Polymer Substrates

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Assignee: WOODS LAWRENCE MPriority: Aug 10, 2011Filed: Aug 10, 2012Published: Mar 14, 2013
Est. expiryAug 10, 2031(~5.1 yrs left)· nominal 20-yr term from priority
Inventors:Lawrence M. WoodsHobart StevensJoseph H. Armstrong
H10P 14/3236Y02E10/541H10F 77/169H10F 77/1698H10F 77/1694H10F 77/211H10F 77/12
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Claims

Abstract

A polymer substrate and back contact structure for a photovoltaic element, and a photovoltaic element include a CIGS photovoltaic structure, a polymer substrate having a device side at which the photovoltaic element can be located and a back side opposite the device side. A layer of dielectric is formed at the back side of the polymer substrate. A metal structure is formed at the device side of the polymer substrate.

Claims

exact text as granted — not AI-modified
1 . A polymer substrate and back contact structure for a photovoltaic element, comprising:
 a polymer substrate having a device side at which the photovoltaic element can be located and a back side opposite the device side;   a layer of dielectric formed at the back side of the polymer substrate; and   a metal structure formed at the device side of the polymer substrate.   
     
     
         2 . The structure of  claim 1 , wherein the photovoltaic element comprises a CIGS structure. 
     
     
         3 . The structure of  claim 1 , wherein the dielectric comprises at least one of SiO 2 , Al 2 O 3 , and silicone resin. 
     
     
         4 . The structure of  claim 3 , further comprising a thin adhesion layer disposed between the layer of dielectric and the back side of the polymer substrate. 
     
     
         5 . The structure of  claim 4 , wherein the adhesion layer comprises at least one of molybdenum, aluminum, chromium, titanium, titanium nitride (TiN), a metal oxide, and a metal nitride. 
     
     
         6 . The structure of  claim 1 , wherein the metal structure comprises a first metal layer, the first metal layer comprising at least one of aluminum, brass, bronze and copper. 
     
     
         7 . The structure of  claim 6 , wherein the metal structure further comprises a layer of molybdenum formed over the first metal layer. 
     
     
         8 . The structure of  claim 6 , wherein the metal structure further comprises a thin adhesion layer disposed between the first metal layer and the device side of the polymer substrate. 
     
     
         9 . The structure of  claim 8 , wherein the thin adhesion layer comprises at least one of molybdenum, aluminum, chromium, titanium, titanium nitride (TiN), a metal oxide, and a metal nitride. 
     
     
         10 . The structure of  claim 1 , wherein the metal structure further comprises a thin adhesion layer in contact with the device side of the polymer layer. 
     
     
         11 . The structure of  claim 10 , wherein the thin adhesion layer comprises at least one of molybdenum, aluminum, chromium, titanium, titanium nitride (TiN), a metal oxide, and a metal nitride. 
     
     
         12 . A photovoltaic element, comprising:
 a CIGS photovoltaic structure;   a polymer substrate having a device side at which the CIGS photovoltaic structure can be located and a back side opposite the device side;   a layer of dielectric formed at the back side of the polymer substrate; and   a metal structure formed at the device side of the polymer substrate between the polymer substrate and the CIGS photovoltaic structure.   
     
     
         13 . The photovoltaic element of  claim 12 , wherein the dielectric comprises at least one of SiO 2 , Al 2 O 3 , and silicone resin. 
     
     
         14 . The photovoltaic element of  claim 12 , wherein the dielectric comprises an oxynitride formed from one of aluminum and silicon. 
     
     
         15 . The photovoltaic element of  claim 12 , further comprising a thin adhesion layer disposed between the layer of dielectric and the back side of the polymer substrate. 
     
     
         16 . The photovoltaic element of  claim 15 , wherein the adhesion layer comprises at least one of molybdenum, aluminum, chromium, titanium, titanium nitride (TiN), a metal oxide, and a metal nitride. 
     
     
         17 . The photovoltaic element of  claim 12 , wherein the metal structure comprises a first metal layer, the first metal layer comprising at least one of aluminum, brass, bronze and copper. 
     
     
         18 . The photovoltaic element of  claim 17 , wherein the metal structure further comprises a layer of molybdenum formed over the first metal layer. 
     
     
         19 . The photovoltaic element of  claim 17 , wherein the metal structure further comprises a thin adhesion layer disposed between the first metal layer and the device side of the polymer substrate. 
     
     
         20 . The photovoltaic element of  claim 19 , wherein the thin adhesion layer comprises at least one of molybdenum, aluminum, chromium, titanium, titanium nitride (TiN), a metal oxide, and a metal nitride. 
     
     
         21 . The photovoltaic element of  claim 12 , wherein the metal structure further comprises a thin adhesion layer in contact with the device side of the polymer layer. 
     
     
         22 . The photovoltaic element of  claim 21 , wherein the thin adhesion layer comprises at least one of molybdenum, aluminum, chromium, titanium nitride (TiN), a metal oxide, and a metal nitride.

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