Oxford PV reaches world-record solar cell efficiency through perovskites


Oxford PV has set a new world record for the efficiency of a commercial-sized M4 solar cell of an incredible 28.6%, as independently certified by Fraunhofer ISE.

The cell was created by depositing a thin film of perovskite on a conventional silicon solar cell. The combined tandem solar cell achieves a conversion efficiency that is significantly higher than that of basic silicon solar cells, averaging 22-24%.

The solar cell was manufactured at Oxford PV’s integrated production line in Brandenburg an der Havel, Germany. The plant has begun initial production of the company’s tandem solar cells for integration by solar module manufacturing partners and is growing to larger volumes. The site, which has been operational since 2017, has the world’s first production line for perovskite-silicon tandem solar cells and employs more than 70 people.

“Our latest efficiency gain of 28.6% is more than 1.5% above our record last year and exceeds our own roadmap plan for 1% annual growth,” said Oxford PV Chief Technology Officer Chris Case. “These record-breaking solar cells are produced on the same production line as our 27% efficient commercial solar cells, which already meet stringent performance and reliability targets.”

Oxford PV Chief Executive David Ward commented: “This world record for a large area cell is the second in two years and is another milestone for our technology. The acquisition also demonstrates our strong intellectual property and is a testament to the talent and commitment of our team. While we continue to innovate our perovskite-on-silicon technology in small research-sized solar cells, our main focus is on improving our commercial-sized cells for the market, scaling up production and working with our solar module partners. prepare them for assembly into solar cells. Our team has made excellent progress through 2023, and our innovative solar cells are close to being in the hands of our module manufacturing customers.”

A campus of the University of Oxford, Oxford PV develops its perovskite-silicon technology based on research-sized cells at its R&D center in Oxford, UK. Its manufacturing facility near Berlin, Germany is focused on scaling up and continuously improving the production of commercial-sized devices, and the company recently registered a US subsidiary.

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