DuPont™ Solamet® PV21A Photovoltaic Metallization Paste for front side/single-print cells

Our front side paste is a highly conductive silver composition and delivers superior efficiency for P-type Solar Cells.

It enables finer line design, excellent printability, and is able to be co-fired with back side (p-type) aluminum conductors and tabbing silver such as Solamet® PV5xx. It is designed for rapid dry and fast (spike) firing for P-type solar cells, LDE and PERC which provides further aspect ratio improvement and superior contact.


  • Enhanced organic design improves fine line printing with better aspect ratio
  • Enables extreme Lightly Doped Emitters (LDE) by reducing contact resistance and optimizes overall cell performance as a result of fill factor (FF) and open circuit voltage (Voc) improvement
  • Improved efficiency up to 0.1% over DuPont™ Solamet® PV20x series
  • Superior metallization contact on LDE/ ultra LDE (standard or
  • PERC cell)
  • Excellent ink transfer capability at versatile fine line design
  • High electrical conductivity after firing
  • Reduced carrier recombination at Ag/Si interface
  • Optimized for low stress and good soldered adhesion with excellent
  • solderability
  • Fast drying and firing
  • Cadmium free*

*Cadmium ‘free’ as used herein means that cadmium is not an intentional ingredient in and is not intentionally added to the referenced product. Trace amounts however may be present.