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.
Oxford PV's solar cells are not commercially available today.
In June 2019, Oxford PV announced its plans to move into commercial solar cell production. We expect the installation of our production line to be completed at the end of 2020. We plan to sell our first product to module manufacturers.
Please continue to visit our website to keep up to date with our progress.
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 facility in Brandenburg an der Havel, Germany in 2016. The industrial scale site is fully equipped to manufacture commercial sized perovskite-silicon tandem solar cells for qualification.
The facility has supported the transfer of our technology from our lab to industrial scale processes and equipment, in preparation for mass production.
Our initial production line will also be installed in this facility.
Read more about our tandem cell production here.
Oxford PV has engineered it perovskite solar cells to be stable.
Our perovskite-silicon solar cells have passed all the key IEC accelerated stress tests – used by PV manufacturers to qualify their products for commercial sale.