Solar cell efficiency reach 29.52%

Recently, Oxford Photovoltaic Company announced that the efficiency of its perovskite/silicon tandem structure has reached a new high, which is close to the 30% milestone, reaching 29.52%. The new efficiency record has been certified by the US National Renewable Energy Laboratory.

The new record was achieved on a 1.12 cm2 battery set in the laboratory. Oxford Photovoltaic previously maintained a record of 27.3% in tandem cell efficiency and then at 28%. Then a team at Helmholtz Zentrum Berlin (HZB) increased the record to 29.15% in January 2020. Both Oxford Photovoltaic and HZB stated that they have a clear roadmap to make this record more than 30% in the near future.

According to data from ASIACHEM Consulting, Oxford Photovoltaic was established in 2010 and is a spin-off company of Oxford University in the United Kingdom. In 2018, they developed a perovskite tandem solar cell with crystalline silicon as the bottom cell, and the cell conversion rate reached 28%. This kind of tandem cell can more efficiently use the high-energy blue part of sunlight, with a theoretical conversion rate limit of 43%. In the solar industry, perovskite tandem cells are regarded as a new generation technology that can reduce the cost of solar energy (LCOE) to an unprecedented level. To industry experts, Oxford Photovoltaic is recognized as a global leader in perovskite tandem cells. Its expertise in process and raw materials is protected by more than 200 patents.

In order to further accelerate the industrialization of this promising technology, in March 2019, Meyer Burger Technology Co., Ltd. and Oxford PV Co., Ltd. (Oxford PV) established a strategic partnership and signed an exclusive cooperation agreement. Promote mass production of perovskite-silicon heterojunction (HJT) tandem cells