Preparation of silver-coated glass frit and its application in silicon solar cells |
SEM top images of (a)–(c) the surface and (d)–(f) the cross-section of the silver electrodes based on (a), (d) the glass frit (P), (b), (e) PVP-modified silver-coated glass frits (P1), and (c), (f) controlled silver-coated glass frits (P2). |