Frequently asked questions
Perovskite is the name of the mineral calcium titanate (CaTiO3). The mineral was first discovered in the Ural mountains in 1839 and named after the well-known, Russian mineralogist Count Lev Perovski.
Oxford PV substitute other elements for the calcium, titanium and oxygen, while maintaining the same crystal structure as the mineral, to tailor the optoelectronic properties.
Solar cells work by absorbing photons from the sun and converting them into electricity.
Conventional silicon solar cells are most effective at using the photons in the red, lower energy end of the solar spectrum. Perovskite solar cells however, effectively utilise the high energy photons at the blue end of the solar spectrum.
Oxford PV’s perovskite photovoltaic technology, is designed to be built on top of conventional silicon solar cells in a multi-junction (tandem) configuration. The partially transparent perovskite top cell, takes advantage of the high energy photons and passes the lower energy photons onto the silicon bottom cell, allowing them to contribute to the overall power. The resulting perovskite-silicon tandem solar cell, can achieve an efficiency not possible with silicon alone.
Oxford PV’s perovskite solar cell technology is a two-terminal design, eliminating the additional materials, weight and mechanical challenges of four-terminal tandem cells when integrated into modules and PV systems.
Unfortunately, Oxford PV's products are not available for purchase today. Oxford PV does not intend to mass produce and sell solar cells. We intend to licence our perovskite solar cell technology to major silicon solar cell and module manufacturers, who in turn will integrate it into their existing production lines. Oxford PV will licence its first commercial product to select manufacturing partners.
Conceptually BIPV will find its place, but today Oxford PV's market entry product is our perovskite-silicon tandem solar cell solution. Our disruptive technology has the potential to enable efficiency gains and through these cost reductions that transform the economics of silicon photovoltaics.
Read more about our perovskite-silicon tandem solar cell technology here
Oxford PV acquired its 17,000 m2 thin film pilot line in Brandenburg an der Havel, Germany in 2016. The industrial scale site is equipped to manufacture commercial sized perovskite-silicon tandem solar cells for partner evaluation. The facility will support the transfer of our technology into customers’ silicon solar cell and module production lines.
Read more about our partner technology transfer capabilities here