| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a conductive paste composition for a solar cell that facilitates control over an entry amount of an electrode material when an electrode is formed by a fire-through method on a solar cell having a shallow emitter structure with a thin (n) layer, obtains excellent ohmic contact of a light receiving surface electrode, and further enhances the durability of a solar cell module. <P>SOLUTION: A light receiving surface electrode is formed of thick film silver containing lead glass containing 32-65 (mol%) PbO, 3-18 (mol%) B<SB POS="POST">2</SB>O<SB POS="POST">3</SB>, 12-50 (mol%) SiO<SB POS="POST">2</SB>, 0.6-30 (mol%) Al<SB POS="POST">2</SB>O<SB POS="POST">3</SB>, 0.6-2.6 (molar ratio) Pb/(Si+Al), 0.6-21 (mol%) Li<SB POS="POST">2</SB>O, and 0-6 (mol%) P<SB POS="POST">2</SB>O<SB POS="POST">5</SB>respectively, so that a corrosion amount is suitably controlled and then even if a line width is reduced almost to 100 (μm), excellent ohmic contact with an (n) layer is obtained. Further, the glass has superior acid resistance, so that the light receiving surface electrode has high durability and hardly deteriorates even if acid is produced in sealing to enhance durability. <P>COPYRIGHT: (C)2013,JPO&INPIT |
