OM Group’s complete process for plated metal stack on fine-line printed Ag paste for c-Si cells

Share on facebook
Share on twitter
Share on linkedin
Share on reddit
Share on email

OM Group has been providing plating solutions to the electronics industries for over 40 years.  Through this experience, the Solar Chemicals division has developed a revolutionary Ni/Cu/Ag plating process for plating on top of fine line silver screened pastes. This economical and efficient process provides PV cell manufacturers cost savings while generating cells with higher efficiencies, as well as improved cell-to-cell consistencies.

Problem: While standard silver pastes have proven to be adequate for producing silicon PV cells, the process has several major drawbacks. Most notably, the continued instability in silver market pricing has led to Ag paste becoming very costly. Additionally, there are limitations to reducing line widths with Ag paste screening. The wider lines create added shading and less surface area on the cell surface, leading to less sunlight being absorbed for energy generation. Finally, because Ag pastes are not pure metal, but metal combined with fillers, there will be variability in the conductivity of the Ag paste lines. While several wet process suppliers have attempted to develop plating systems for these applications, many silver pastes used in the market place are very sensitive to chemistry.

Solution: OM Group Solar Chemicals’ Solar Plate Ni PV80, Cu PV73 and Ag200 baths were developed for maximum compatibility with the top silver pastes in the market. PV cells manufactured with these chemistries are said to have higher efficiencies, higher fill factor and lower series resistance. Furthermore, there is no attack of the front-side silver paste, the aluminum BSF, the ARC or the silver back-side contacts. Most importantly, the adhesion of the metal stack layer is said to be excellent after soldering.

Applications:  OM Group’s chemistries can be used either in LIP, standard electrolytic or combined LIP/electrolytic mode. The chemistries can plate at very high current densities, allowing the customer to minimize floor space and achieving high volume throughput. 

Platform: OM Group’s chemistry have been designed to be used with the top wet process equipment systems available on the market. 

Availability: Currently available.

9 December 2021
The Smart Energy Council is hosting Australia’s second Virtual Smart Energy Conference and Exhibition on Thursday, 9 December 2021. This event will show that the industry powers on despite COVID-19 and we are standing together undeterred in spirit. Bringing our global community together using the latest technology.
13 January 2022
Intersolar North America and Energy Storage North America “Come Together” for the first time in Long Beach, CA—connecting installers, developers, utilities, technology providers, policy makers, and key stakeholders from around the world to advance the clean energy future. With best-in-class conference programming, integrated exhibits and pavilions, and the live Solar Games installer competition, #isnaesna21 will showcase the industry trends, innovative solutions, and emerging talent transforming the solar, energy storage, and e-mobility markets. Register today to redeem our exclusive offer for PV Tech readers—free expo hall or 20% off full conference pass.
1 February 2022
As Solar Finance & Investment enters its ninth year, we sit on the cusp of a new power market with solar at its heart. The 2022 edition of the event will build on our years of expertise and relationships to bring investors and lenders together with top developers. Connect with leaders in the field and use exclusive insights to drive investment and development decisions for the future. Meet new and existing project partners at the largest gathering of European solar investors and lenders.
23 February 2022
Held annually since 2016, the Energy Storage Summit Europe is the place to be for senior stakeholders in the European storage industry. Designed to accelerate deployment of storage, we examine evolving chemistries, business models, project design, revenue stacks and use cases for storage. The 2022 edition will include exclusive content around longer duration solutions, energy strategies for wide-scale deployment of EVs and "EnTech", the event which sits at the intersection of digitisation, decentralisation and decarbonation of the power system. Come to meet TSOs, DSOs, Utilities, Developers, Investors and Lenders and leave with new contacts, partners and a wealth of information.
7 March 2022
Take your chance to join the most powerful platform in the MENA region. Middle East Energy (MEE), Intersolar, and ees, the leading energy exhibitions are joining hands to co-deliver an outstanding renewables and energy storage event at Middle East Energy 2021. Renewables and energy storage at MEE is the largest gathering of solar and renewable energy industry professionals in the Middle East & Africa, offering the most effective trade focused platform to international manufacturers and distributors looking to meet regional buyers.
23 March 2022
When it comes to storage, the US market exceeded a gigawatt of advanced energy storage installations (weighted towards lithium ion) at 1.46 GW, more than the previous six years in total! An exponential growth rate could see the market hit 7.5 GW p.a. by 2025. The summit will provide a wealth of content around this vital piece in the US power puzzle, with sessions dedicated to explore how companies are making money from batteries, the latest chemistries and their applications as they apply to different use-cases. We ask how investors can match ESG criteria to batteries and we will bring case studies of successful deployment and project execution onto the stage to examine how you can ensure your own projects are successful.

Read Next

PV Tech Premium
December 6, 2021
PV Tech Premium breaks down the key schemes and incentives that exist for companies that want to invest in India's growing solar market
December 6, 2021
Solar deployment in India is faltering as high module prices impact project construction, according to new analysis from Bridge to India.
December 6, 2021
The new edition of PV Tech Power, volume 29, is now available to download, including our comprehensive cover story on solar’s critical next decade.
December 6, 2021
UK-based solar PV inspection and data analytics company Above details how its ‘Follow PV’ project, launched alongside the University of Essex, is enhancing the research and development of autonomous drone technology in utility-scale solar.
December 6, 2021
Daqo New Energy has begun pilot production at its new 35,000MT Phase 4B polysilicon production facility, which has been completed ahead of schedule.
December 6, 2021
China’s National Energy Administration has kickstarted the second batch of large-scale wind and solar PV projects under the country’s multi-hundred-gigawatt desert renewables scheme.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
February 1, 2022
London, UK
Solar Media Events
February 23, 2022
London, UK
Solar Media Events
March 23, 2022
Austin, Texas, USA
Solar Media Events
March 29, 2022
Lisbon, Portugal