Heraeus’ ‘SOL9631’ front-side paste offers new glass chemistry for PERC cells

Share on facebook
Facebook
Share on twitter
Twitter
Share on linkedin
LinkedIn
Share on reddit
Reddit
Share on email
Email
The SOL9631 Series has been developed based on new glass chemistry, combined with the latest breakthrough in organic vehicle system for ultra-fine-line printing. Image: Heraeus

Heraeus Photovoltaics has launched a new PERC (Passivated Emitter Rear Contact) metallization paste. The SOL9631 front-side paste has a new and unique glass chemistry combined with a new organic vehicle system. Due to a denser microstructure it is tailored for ultra-fine line printability for screen printing.

Problem

The increased migration to PERC solar cells to boost conversion efficiencies has highlighted lower process (firing) temperatures are required, while providing excellent adhesion. PERC cells also need to have limited impact from LID (Light Induced Degradation).

Solution

The SOL9631 Series has been developed based on new glass chemistry, combined with the latest breakthrough in organic vehicle system for ultra-fine-line printing. As confirmed by customers SOL9631 Series has improved LID performance and improved reliability for both cells and modules. SOL9631B has a wide firing window and can be fired at low temperatures, which makes the paste specifically suitable for the application on PERC solar cells. At the same time, the paste shows excellent performance at regular firing temperatures. The paste is specifically strong in the feature of adhesion. The SOL9631 series is tailored for Ultra-fine line printability for screen printing. It supports a finger geometry that can print defect-free through a less than 30μm screen opening in high throughput mass production, resulting in an efficiency gain through reduced optical shading and less contact area.

Applications

Ultra-fine line printability for screen printing of PERC solar cells and BSF cells.

Platform

The SOL9631 series features a unique glass chemistry that enables the tolerance of low firing temperatures. After low temperature firing the microstructure of the fired finger shows a much more densified structure including the Ag-Silicon interface, enhancing adhesion, grid resistivity and solderability.

Availability

May 2016 onwards.

25 April 2022
PV CellTech will be held in Europe for the first time! Join us in Berlin to explore the industry transition to n-type mass production. The event concentrates on presentations only; these forming an almost overload of pertinent facts and details to help anyone looking at forming their internal roadmaps for the next few years regarding PV technology trends.

Read Next

January 25, 2022
PV CellTech 2022 is to be held in Berlin, Germany, the first time the industry-leading event will be located in Europe. Finlay Colville previews the event and provides attendance details.
January 17, 2022
Solar module manufacturer Seraphim has launched its new S5 series of high-efficiency PV modules with a maximum power output of up to 670W and an efficiency of 21.57%.
January 13, 2022
Reliance Industries has signed a Memorandum of Understanding (MoU) with the government of Gujarat for a total investment of INR5.955 lakh crore (US$80 billion) over 10-15 years to establish 100GW of renewables and set up green technology manufacturing facilities in the state.
January 10, 2022
Upstream solar major Tongwei has forecasted for profits to more-than-double in its 2021 financial year on the back of increased material and cell prices experienced last year.
January 10, 2022
The Australian Renewable Energy Agency (ARENA) is providing AU$40 million in funding to support research and development (R&D) that can help Australia reach its ‘ultra-low cost solar’ goal, recently added as a priority under the country’s decarbonisation strategy.
January 6, 2022
JinkoSolar has won a tender issued by the China Petroleum Engineering and Construction Corporation (CPECC), an affiliate company of the China National Petroleum Corporation (CNPC), for up to 1.85GW of high efficiency TOPCon modules

Subscribe to Newsletter

Upcoming Events

Solar Media Events
February 23, 2022
London, UK
Solar Media Events
March 8, 2022
London, UK
Solar Media Events
March 23, 2022
Austin, Texas, USA
Solar Media Events
March 29, 2022
Lisbon, Portugal
Solar Media Events
April 25, 2022
Berlin, Germany