Conductive silver aluminum paste, preparation method, electrode, and n-type topcon battery

A conductive silver aluminum paste, wherein the conductive silver aluminum paste comprises silver powder, aluminum powder, glass powder, silver aluminum paste additive, and organic carrier;

• when defining the total weight of the conductive silver aluminum paste as 100%, the weight percentage contents of the components are:
• silver powder 80.0-88.0%, aluminum powder 0.5%-2.0%;
• glass powder 2.5%-6.0%:
• silver aluminum paste additive 0.1%-2.0%;
• organic carrier 8.0%-12.0%;
• wherein the glass powder comprises first main glass powder and second main glass powder, or comprises first main glass powder, second main glass powder, and auxiliary glass powder;
• the first main glass powder is glass powder in a Ph—Si—B—Li—O system, the second main glass powder is glass powder in a Pb—Bi—B—Li—O system, and the auxiliary glass powder is glass powder in a Ba—B—Si—Li—O system;
• when defining the total weight of components contained in the glass powder as 100%, the weight percentage contents of the components are:
• the first main glass powder and the second main glass powder 60%˜100.0%;
• the auxiliary glass powder 0.0%˜40.0%;
• in the second main glass powder, when defining the total number of moles of the components contained in the second main glass powder as 100%, the mole percentages of the components are:
• PbO 5.0%˜50.0%;
• Bi2O3 5.0%˜50.0%;
• B2O3 50%˜25.0%;
• Li20 3.0%˜20.0%;
• second modified additive 0.0%˜30.0%;
• wherein the second modified additive is an oxide containing one or more element of Zn, Ca, Ba, Na, K, Al, Si, Ge, Se, Te, Sn, and Ga, or a substance that decomposes to obtain the oxide of the element during a process of manufacturing the second main glass powder.