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US 8,076,777 B2Granted
Glass compositions used in conductors for photovoltaic cells
AssigneeE. I. Du Pont de Nemours and Company
InventorsTakuya Konno, Brian J. Laughlin, Hisashi Matsuno
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Abstract
The invention relates to glass compositions useful in conductive pastes for silicon semiconductor devices and photovoltaic cells. The thick film conductor compositions include one or more electrically functional powders and one or more glass frits dispersed in an organic medium. The thick film compositions may also include one or more additive(s). Exemplary additives may include metals, metal oxides or any compounds that can generate these metal oxides during firing.
Claims15
A composition comprising:
- (a) one or more electrically conductive materials;
- (b) one or more glass frits, wherein one or more of the glass frits comprises, based on the wt % of the glass frit:
- 7-25 wt % of SiO2,
- 55-90 wt % of Bi2O3,
- 0.5-5 wt % of B2O3,
- 1.5-8 wt % of one or more alkali metal oxides;
- 1-8 wt % of ZrO2;
- and
- (c) organic medium.
6 more elements
Dependencies are inferred from the claim text.