CRYSTALLINE SOLAR BATTERY CELL AND PROCESS FOR PRODUCTION THEREOF

摘要

Disclosed is a technique for producing a light receiving surface electrode for a crystalline solar battery cell, which can improve an aperture ratio and does not damage a silicon layer. Specifically disclosed is a crystalline solar battery cell comprising: a silicon substrate (10) which has an n+-type semiconductor layer (11) on the front surface side on the light incident side thereof and a p+-type semiconductor layer (13) on the back surface side thereof; an antireflective film (12), and a finger electrode (21) and a bus bar electrode (22) that serve as light-receiving surface electrodes, all of which are formed on the n+-type semiconductor layer (11) on the silicon substrate (10); and a sintered back surface electrode layer (14a) which is formed on the p+-type semiconductor layer (13) on the silicon substrate (10). Each of the finger electrode (21) and the bus bar electrode (22) is composed of a bonding wire comprising an electrically conductive material. The bonding wire is composed of gold, silver, copper, aluminum, palladium or an alloy thereof.