Silicon solar cells are prepared following the conventional fabrication processes, except for the metal- lization firing process. The cells are divided into two groups with higher and lower fill factors, respectively. After light-induced plating （LIP）, the fill factors of the solar cells in both groups with different initial values reach the same level. Scanning electron microscope （SEM） images are taken under the bulk silver electrodes, which prove that the improvement for cells with a poor factor after LIP should benefit from sufficient exploitation of the high density silver crystals formed during the firing process. Moreover, the application of LIP to cells with poor electrode contact performance, such as nanowire cells and radial junction solar cells, is proposed.
