Solar cells produced from high ohmic wafers and paste comprising Ag metal-oxide additive

摘要

In general, the invention relates to electro-conductive pastes with Ag-metal-oxide as additives and solar cells with high Ohmic sheet resistance, preferably photovoltaic solar cells. More specifically, the invention relates to solar cell precursors, processes for preparation of solar cells, solar cells and solar modules. The invention relates to an electro-conductive paste comprising the following paste constituents:
a. At least 70 wt. % Ag particles, based on the paste,
b. An organic vehicle,
c. A glass,
d. An Ag-metal-oxide, comprising Ag, a metal M or semiconductor element different from Ag, and oxygen.