Metallization Pastes for p-Type Cells

The p-type silicon solar cells held the biggest market share during the last years. With an increasing number of worldwide cell producers adopting pv industry scale technology, PERC mono technology can be seen as the next volume driver in c-Si PV.

SOL9651D Series

Front-side Silver Paste designed for Diamond-Wire-Cut mc Cell to increase the conversion efficiency of by > 0.1%.

The Heraeus SOL9651D series front-side silver paste was specially designed for the emerging Diamond-Wire-Cut (DWC) multicrystaline solar cells with specially textured surface. The new glass chemistry provides excellent adhesion of SOL9651D, which allows customers to optimize their busbar design for better electrical performance and cost reduction, especially on DWC/Black-silicon texturing.

Your Benefit - Our Strength

  • Cost reduction by decreasing waste in mass production.
  • Outstanding Light Induced Degradation (LID) performance by reducing the negative impact of irradiation on the charge carrier lifetime.
  • Additional efficiency gain on specially textured DWC cells by providing ultra-fine-line printability without defects in mass production.

SOL9641B

New Generation Front Side Silver Paste helps to reach up to 0.2 % Eta gain.

Heraeus, the technology leader, developed the SOL9641B series based on the brand-new glass chemistry for ULDE (Ultra Lightly Doped Emitter), combined with the latest improvement in organic vehicle system for UFL (ultra-fineline) printing.

Your Benefit - Our Strength

  • Fine-line screen-printing for mass production: it supports a finger geometry that can print defect-free through a less than 30 μm screen opening
  • Great CTM (cell-to-module) performance
  • Superior metallization contact on ULDE mono and PERC cells through wide firing window toward lower temperature side

SOL327 Series

New Generation PERC Back-side Tabbing Paste helps to improve cell efficiencies up to 21%.

The low-activity SOL327 PERC tabbing paste helps PERC and floating bus bar designs to realize its higher efficiency and longer term reliability. The paste contains a specific glass chemistry, imparting controlled reaction between Ag paste and the dielectric layer. At the same time it offers, in combination with an optimized Ag system, higher aged adhesion on wafers with different morphology.

Your Benefit - Our Strength

  • Less damage during metallization by reducing electron recombination.
  • Flexibility in the firing process: this paste can be co-fired with commercially available PERC Aluminum paste..
  • Minimize defects on the emitter during the metallization process because of a new concept for paste additives. Higher aged adhesion on wafers with different morphology can be reached.

SOL326 Series

New Generation PERC Back-side Tabbing Paste improves cell efficiency up to 20%.

Heraeus’ newly developed low-activity tabbing paste SOL326 Series enables PERC and floating busbar design cells to realize their full efficiency potential and to achieve longer term reliability. SOL326 Series contains a specific glass chemistry, imparting controlled reaction between silver paste and the dielectric layer.

Your Benefit - Our Strength

  • Less damage during metallization by reducing electron recombination.
  • Minimize defects on the emitter during the metallization process because of a new concept for paste additives. Higher aged adhesion on wafers with different morphology can be reached.
  • Flexibility in the firing process: this paste can be co-fired with commercially available back-side Aluminium and front-side Silver pastes.
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