Process for forming an electrically conductive structure on a substrate
AssigneeE. I. Du Pont de Nemours and Company
InventorsZhigang Rick Li, Kurt Richard Mikeska, David Herbert Roach, Carmine Torardi, Paul Douglas Vernooy
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Abstract
A conductive paste composition contains a source of an electrically conductive metal, an alkaline-earth-metal boron tellurium oxide, and an organic vehicle. An article such as a high-efficiency photovoltaic cell is formed by a process of deposition of the paste composition on a semiconductor device substrate (e.g., by screen printing) and firing the paste to remove the organic vehicle and sinter the metal and establish electrical contact between it and the device.
Claims11
A process for forming an electrically conductive structure on a substrate, the process comprising:
- (a) providing a substrate having a first major surface;
- (b) applying a paste composition onto a preselected portion of the first major surface, wherein the paste composition comprises:
- i) a source of electrically conductive metal,
- ii) an alkaline-earth-metal boron tellurium oxide wherein the alkaline earth metal, boron, and tellurium cations together comprise at least 70% of the cations present in the oxide, and
- iii) an organic vehicle in which the source of electrically conductive metal and the alkaline-earth-metal boron tellurium oxide are dispersed;
- and
- (c) firing the substrate and paste composition thereon, whereby the electrically conductive structure is formed on the substrate.
Dependencies are inferred from the claim text.