Silfab SpA, ISC Konstanz announce 21% efficiency on IBC monocrystalline silicon cell

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

The partnership between Silfab SpA and ISC Konstanz has announced the achievement of a 21% energy conversion efficiency for large area monocrystalline silicon solar cells. The news is a result of the companies’ research partnership on ‘Zebra’ interdigitated back-contact (IBC) cells as unveiled by the joint venture last summer. It is believed that efficiency could eventually top 24% for the solar cells.

Perhaps the most impressive part of the announcement is that the joint research and development programme achieved the technological breakthrough using a standard, low-cost industrial process. The ‘Zebra’ cell concept uses large (156 × 156mm²) n-type monocrystalline (Cz) wafers that are back-junctioned and back-contacted without metallization on the side to be exposed to the sun. This innovation has allowed the partnership to produce cells with an efficiency of 21–24% while most other mainstream providers reach 19–20% efficiency on monocrystalline cells. It is hoped the breakthrough will significantly reduce the cost of electricity production per watt peak. 

The manufacture of ‘Zebra’ cells uses a new combination of single process steps that already exist for mass cell production; importantly this means solar providers can bypass the need to install specific IBC-producing equipment. Silfab will be a technological provider for cell and module manufacturing companies that wish to upgrade their traditional production facilities to maximize their performance and productivity. The cell and module manufacturing pilot line will begin in the next few months; the companies intend that the conversion rate of ‘Zebra’ cells will facilitate the production of 60-cell modules with a nominal output power of 300Wp and no LID effect.

Dr. Radovan Kopecek, co-founder and director of ISC Konstanz, said, “We are amazed how fast we have reached our set goals and in some points are even ahead of schedule. This gives us now the opportunity to focus on industrialization of our first product. We are proud to be able to anticipate and illustrate such results as ours on low-cost IBC cells to the photovoltaic scientific and technical community which will be presented on the Photon Terawatt-hours Conference in Berlin this Wednesday and, in more detail, on the nPV workshop in Amsterdam 13th-14th May this year.”

ISC Konstanz an independent research organisation specializes in research and development of crystalline silicon solar cells and their implementation in the PV industry.

1 December 2021
Join this virtual conference on 1-2 December 2021 for expert presentations covering PV Module Technology, Supply & Site Optimisation for Utility-Scale. Delegates can access streamed presentations, session recordings and chat/messaging tools to connect with fellow delegates and speakers. Speakers include leading developers, manufacturers, testing and research institutes, including: NREL, Silicon Ranch, Sonnedix, Heliene, Powertis, LONGi Solar, JinkoSolar, PVEL, Risen Energy, Seraphim, STS, Trina Solar, Eternalsun Spire, QEERI, Fraunhofer, Estuary Capital Partners and VDE
2 December 2021
Intersolar is the world’s leading exhibition & conference series for the solar industry. As part of this event series, Intersolar India in Mumbai is India’s most pioneering exhibition and conference for India’s solar industry. It takes place annually and has a focus on the areas of photovoltaics, PV production and solar thermal technologies. Since 2019, Intersolar India is held under the umbrella of The smarter E India – India’s innovation hub for the new energy world.
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.

Read Next

November 29, 2021
Commercial and industrial (C&I) solar developer Altus Power will offer distributed renewables and energy storage solutions through a new partnership with energy major Shell.
November 29, 2021
UK developer Elgin Energy is targeting 5GW of solar-plus-storage across its core markets by 2025 after completing a £25 million (US$33.3 million) fundraising round
November 29, 2021
A round-up of the latest project news from across the world, including Masdar’s plans to develop solar in Armenia, TotalEnergies completing its largest project in France and Shikun & Binui expanding its US energy portfolio.
November 29, 2021
The economic viability of deploying thin-film floating solar systems at offshore locations is being explored by a new collaborative study in the Netherlands.
November 29, 2021
Mainstream Renewable Power has secured €90 million (US$101.6 million) in equity funding to support the build-out of a multi-gigawatt pipeline across Latin America, Africa and the Asia Pacific region
November 29, 2021
Austrian utility Verbund is acquiring a 147.6MWp PV project in southern Spain from renewables developer BayWa r.e. as part of the company’s planned solar expansion.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
December 1, 2021
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

Cyber Monday Flash Sale – 50% off our subscriptions

24 hours only