News Article

Umicore And INER 8” Germanium Go Solar

The collaboration is initially targeting its 8” germanium substrates at the III-V market.

Umicore Electro-Optic Materials and Taiwanese firm INER have introduced 8"germanium wafers for Concentrated Photovoltaic (CPV) cells.

The co-operation was announced at the III-V compound solar cells advanced technology seminar in Taipei, Taiwan.

In 2011 INER’s research team achieved a cell efficiency of over 37%, @500x, based on 5.5mm cells

from Umicore’s 8" germanium wafers that are cut from dislocation free Czochralski crystals. This result was also reproducible in a volume production environment.

The increased wafer size used in the production process offers the potential to reduce the process cost of CPV solar cells. One 8" wafer can produce 640pcs of 5.5mm used in a CPV cell. INER development says this indicates that 8" wafers can increase throughput by up to 30% and generate production cost savings in excess of 30% compared to processes using 4" germanium wafers.

“The era of the 8" germanium wafer is coming and we are leading the way" said Edward Yang of INER.

Umicore Technology Manager Ben Depuydt added, “Dislocation-free germanium has been the

cornerstone of the success of III-V solar cells. It is today the most widely adopted technology in triple junction solar cells and our 8" wafer technology is a real enabler for the development of CPV cells".

Umicore recently opened up world's newest dislocation-free germanium wafer production plant in North America, thereby doubling its production capacity.
CS International to return to Brussels – bigger and better than ever!

The leading global compound semiconductor conference and exhibition will once again bring together key players from across the value chain for two-days of strategic technical sessions, dynamic talks and unrivalled networking opportunities.

Join us face-to-face between 28th – 29th June 2022

  • View the agenda.
  • 3 for the price of 1. Register your place and gain complementary access to TWO FURTHER industry leading conferences: PIC International and SSI International.
  • Email  or call +44 (0)24 7671 8970 for more details.

*90% of exhibition space has gone - book your booth before it’s too late!


Search the news archive

To close this popup you can press escape or click the close icon.
Register - Step 1

You may choose to subscribe to the Compound Semiconductor Magazine, the Compound Semiconductor Newsletter, or both. You may also request additional information if required, before submitting your application.

Please subscribe me to:


You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in:
Live Event