Conductive inks with metallo-organic modifiers

Abstract

A conductive ink having a glass frit, an organic medium a conductive species and one or more metallo- organic components which form metal oxides upon firing and reduce series resistance to a same or greater degree a ink that do not include metallo-organic components, is provided. Embodiments of conductive ink include metallo-organic components that include a bismuth metallo-organic component and glass frits comprising one or more of bismuth oxide, silica, boron oxide, tellurium dioxide, and combinations thereof. Embodiments of photovoltaic cells with an anti-reflection coating, gridlines formed from conductive ink incorporating one or more metallo-organic components, are also provided.

Description

technical field [0001] Embodiments of the invention relate to conductive inks comprising glass frit and one or more metallo-organic components, and photovoltaic cells having conductive gridlines formed from conductive inks comprising glass frit and one or more metallo-organic components . Background technique [0002] Conductive inks or pastes are used to form metal contacts, such as silver gridlines and bus bars, on substrate surfaces such as silicon. Such substrates can be used in solar cells, or photovoltaic cells, which convert solar energy into electricity when photons from sunlight excite electrons in semiconductors from the valence band to the conduction band. The electrons flowing through the conduction band are collected by the metal contacts. Current crystalline silicon solar cells in the industry are typically coated with anti-reflection coatings to increase their light absorption and thus improve cell efficiency. However, the anti-reflective coating also acts ...

AI Technical Summary

Problems solved by technology

If the selected frit is too aggressive, the substrate may become contaminated, reducing the performance of the solar cell

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