TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Components: Both Tgl and Tgf are in a range of 250-530 degrees C. The first glass frit and the further glass frit are present in a weight ratio of 1:5-5:1. The first paste satisfies at least one of the criteria including (i) the viscosity of the first paste is 5-35 Pa second, and (ii) all solvents present in the paste have boiling point at 90-300 degrees C. The first paste satisfies at least one of the criteria including (i) the aluminum particles have d50 at 1-5 mu m, (ii) the silver particles have d50 at 1-4 mu m, and (iii) the glass frit particles have d50 at 0.1-3 mu m. The silver particles are spherical. The solar cell precursor further comprises a further paste (409) superimposed on a further area on the back face (406). The first area is smaller than the further area. The further paste comprises silver particles, vehicle, glass frit and additive. The thickness of the p-doped layer is 10 nm-4 mu m. The back face comprises an n-doped layer (405), where the n-doped layer has a greater thickness than the p-doped layer. The p-doped layer comprises B as a dopant. The back face comprises an n-doped layer comprising P as a dopant. One or more layers of solar cell precursor act as anti-reflection layer and/or passivation layer (410) that is present between the p-doped layer and the superimposed first paste. At least one of the layers which function as anti-reflection layer and/or passivation layer comprises SiNx, where x stands for a positive but not necessarily whole number. The first paste is superimposed on the first area in a grid pattern. The grid pattern of the first paste superimposed on the first area comprises fingers with a width of 20-100 mu m and bus bars at an angle of 70-90 degrees with a width of 0.5-2.5 mm. The solar cell precursor comprises a further paste superimposed on a further area on the back face in a grid. The grid pattern of the further paste superimposed on the further area comprises fingers with a width of 20-200 mu m and bus bars at an angle of 70-90 degrees with a width of 0.5-2.5 mm.