Back contact solar cell substrate, method of manufacturing the same and back contact solar cell

A method of manufacturing a back contact solar cell substrate, comprising:

• producing a light-receiving grid line by adhering material configured to form the light-receiving grid line on a light-receiving surface of a silicon chip;
• producing a back surface field by adhering material configured to form the back surface field on a backlight surface of the silicon chip;
• producing a positive electrode by adhering a positive electrode paste on a surface of the back surface field, and making the positive electrode be electrically connected with the back surface field;
• producing a negative electrode by adhering a negative electrode paste on the backlight surface of the silicon chip, and making the negative electrode be insulated from the backlight surface of the silicon chip;
• and
• providing a side connecting element on a side surface of the silicon chip, insulating the side connecting element from the side surface of the silicon chip, and electrically connecting the side connecting element between the negative electrode and the light-receiving grid line.