Thin film article and method for forming a reduced conductive area in transparent conductive films for photovoltaic modules
AssigneePrimestar Solar, Inc.
InventorsJonathan Mack Frey, Scott Daniel Feldman-Peabody
Life of this patent
Estimating the term…
Abstract
A method for forming a reduced conductive area in transparent conductive. The method includes providing a transparent, electrically conductive, chemically reducible material. A reducing atmosphere is provided and concentrated electromagnetic energy from an energy source is directed toward a portion of the transparent, electrically conductive, chemically reducible material to form a reduced conductive area. The reduced conductive area has greater electrical conductivity than the transparent, electrically conductive, chemically reducible material. A thin film article and photovoltaic module are also disclosed.
Claims14
A method for forming a chemically reduced conductive area in a transparent conductive layer of a thin film photovoltaic device, the method comprising:
- providing a superstrate having a first conductive layer thereon, wherein the first conductive layer comprises a transparent conductive oxide material;
- depositing a first semiconductor layer on the first conductive layer;
- depositing a second semiconductor layer on the first semiconductor layer;
- forming a first scribe by selectively removing the first conductive layer, the first semiconductor layer, and the second semiconductor layer;
- filling the first scribe with a dielectric material;
- thereafter, exposing the superstrate to a reducing atmosphere;
- in the reducing atmosphere, directing concentrated electromagnetic energy from an energy source toward the superstrate to form a second scribe having a chemically reduced conductive area defined in the first conductive layer, wherein the chemically reduced conductive area has greater electrical conductivity than the transparent conductive oxide material;
- and
- thereafter, forming a second conductive layer on the second semiconductor layer and the chemically reduced conductive area.
Dependencies are inferred from the claim text.