Silver pastes for Organic Photovoltaics and Heterojunction solar cells

A highly promising concept for future solar cells is the heterojunction (HJT) architecture. As ITRPV predicted, stabilized cell efficiency of HJT will increase to 24% by 2026. Moreover, metallization of HJT cells offers the advantage of using low-temperature steps, which reduces energy consumption and hence production costs.

An organic photovoltaic solar cell (OPV) uses organic electronics (conductive organic polymers or organic molecules) for light absorption and charge transport to produce electricity by the photovoltaic effect. Single layer organic photovoltaic cells are made by sandwiching a layer of organic electronic materials between two metallic conductors, such as indium tin oxide (ITO) or low-temperature silver paste, and Aluminium, Magnesium or Calcium as another layer.

SOL590 Series

New Generation Low Temperature Silver

As the Mono crystal trend has been established, the efficiency improvement of P-type cell slows down, but the efficiency improvement potential of N-type is large. Among them, HJT (Heterojunction with intrinsic Thinlayer) cell is abstracting the industry to invest in this cell technology due to its high efficiency and high cost reduction potential.

As the industry leader in metallization pastes for crystalline solar cells, HERAEUS has long arranged for scientists to work with institutions to develop screen printable silver paste products for low temperature processing for HJT cell. The Heraeus SOL590 has been developed based on our recent improvement in low curing temperature paste chemistry, combined with the latest breakthrough in silver powder development and organic design which possess faster cure times, higher efficiencies and greater adhesion than commercially available materials.

KEY BENEFITS

  • Outstanding efficiency gain
  • Excellent adhesion and solder ability
  • Excellent resistivity values with a low curing temperature
  • Lower paste consumption
  • Fine-line screen printing for mass production
  • Can be stored at room temperature
  • Available for ITO and WTO

SOL580 Series

Low Temperature front-side Silver Paste can reach up to 0.05 % Eta gain.

The SOL580 has been developed based on our recent improvement in low curing temperature paste chemistry, combined with the latest breakthrough in silver powder development and organic design.

Your Benefit - Our Strength

  • Higher efficiency gain through reduced optical shading and less volume resistivity.
  • Improved sintering of the silver at low curing temperatures.
  • Defect-free printing in mass production.