Oxford Photovoltaic 1 cm2 perovskite-silicon tandem solar cells achieve a conversion efficiency of 27.3%, which the company points out exceeds the world record efficiency of single-junction silicon solar cells by 26.7%.
Although the battery is much smaller than the battery in commercial solar applications, Oxford PV indicated that it has achieved similar results on the same material, the same size battery.
Chris Case, Oxford's chief technology officer, said: '1 square centimeter is the typical research scale for laboratory certification. We have extended this technology to 156mm x 156mm batteries, we have not officially reported the full size of the German factory trial production. Battery efficiency. There is only a small difference between studying the size of the battery and the results we have achieved on commercial-scale silicon solar cells.'
Oxford PV is studying the commercialization of the silicon perovskite technology and acquired a trial production line in Germany in 2016 to produce these batteries. 'We are continuing to introduce perovskite silicon solar cell technology. Thanks to partners, supply With commercial and customer support, we can quickly upgrade our perovskite solar technology. ' Researchers have long known that low-cost perovskite materials can achieve higher conversion efficiencies.