In 2016 and 2017 more than 1,500 patents for perovskite materials and photovoltaic panels and have been published representing 75% of all perovskite photovoltaic patents published since 2008. At the start of 2018 this grows continues – and by the end of 2018 for are expected the number of patents published during 2018 to bigger than in 2017.
The latest release of the “Perovskite photovoltaic: A review of the patent landscape – 2018-Q2” greatly extends the analysis to quickly get to grips with the rapidly changing patent landscape. Patent data now includes up to end March 2018.
The report highlights that Oxford Photovoltaics still holds first place, with more than 120 published patents, with Sekisui Chemical in close 2nd place. Oxford Photovoltaics Ltd is a spin-out company from the University of Oxford and based on the work of Henry Snaith who currently holds the position of Prof at the University of Oxford.
The catalyst for this growth in perovskite photovoltaic patents can be traced back to the publication of an academic paper in 2012 by Snaith on Perovskite solar cell technologies which showed it was possible to improve power conversion efficiencies to more than 10.9% and at the same time offering route towards a low-cost manufacturing process that also supports roll-to-roll gih volume production.
Now perovskite power conversion efficiencies can reach more 22% and in tandem cells have overtaken silicon. Within the past year Oxford Photovoltaics has set up a pilot production facility in Germany as too has Greatcell Solar in Australia and Saule in Poland.
Academics still hold more than 1200 patents compared to commercial applicants who hold around 900 published patents. Chinese and Korean academics dominate. There are more than 320 granted patents – academics account for more than 210 granted patents compared to commercial applicants who current hold about 100 granted patents.
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