New efficiency record for bifacial silicon solar cell
The bifacial mono-PERC (Passivated Emitter and Rear Cell) solar cell is built on a standard 156 x 156mm M2 silicon wafer and showed a record efficiency of 24.06 percent in tests at the National Center of Supervision and Inspection on Solar Photovoltaic Product Quality (CPVT) in China. The company has been leapfrogging Fraunhofer-ISE in Germany in the development of the technology.
“The PERC solar cell conversion efficiencies as we demonstrate the continuing ability to provide high-efficiency products to the global solar market,” said Li Wenxue, President of LONGi Solar. “Our latest record solar cell conversion efficiencies also endorse the success of our R&D investments, which have set the benchmark for the industry in recent years.”
In April 2017, based on selective emitter technology, the company reported a monocrystalline silicon PERC cell conversion efficiency of 22.17% (tested by CPVT), which effectively supported the supply requirements of the Phase 3 requirements of China’s solar installation program.
In October 2017, LONGi Solar broke the world-record efficiency of monocrystalline silicon PERC cell in commercial dimensions with 22.71%, while the original record was broken by Fraunhofer-ISE with 22.61%. In the same month, the cell conversion efficiency increased to 23.26%
In August 2018, LONGI Solar achieved the highest efficiency of P-type mono-PERC bifacial solar cells in China with a conversion efficiency of 23.11%.
“This is the first time that the efficiency of monocrystalline PERC solar cells in commercial dimensions have exceeded 24%,” said Dr. Li Hua, LONGi Solar, Vice President of Cell R&D. “In the last three consecutive years LONGi Solar has developed three generations of ‘Hi-MO’ products based on PERC technology, which are setting the efficiency and reliability benchmark of high-efficiency PERC technology within the industry.”
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