Abstract
A process of manufacturing the interdigitated back-contact solar cell, with the use of screen printing or spraying and the use of chemical etching, form the trenches of the P-type electrode on the back of the substrate for making the solar cell. The time-consuming process of photolithography (for example, at least two steps of high-temperature diffusion) can be avoided. Furthermore, only one machine for printing, etching and masking is needed to form the interdigitated back-contact solar cell. The present invention can make the whole process to streamline and to reduce the cost and time so as to enhance the efficiency of the solar cell, achieving the purpose of mass production.