Jolywood Partners with Imec to Develop Bifacial Solar Cells

30-05-2018

Jolywood, a leader in the research, development and mass production of N-type bifacial solar cells, has collaborated with Imec, the world-leading research and innovation hub in nano-electronics, energy and digital technology, to develope industrialized bifacial solar cells with an average front-side conversion efficiency up to 21.9 percent. As part of the collaboration, Imec has also demonstrated screen-printed monofacial n-PERT cells with the conversion efficiency up to 22.8 percent.

 

Jolywood N-type High Efficiency Mono crystalline Silicon Bifacial Products

"Jolywood is at the forefront of the n-type industrial technological developments in the PV industry, so we're very satisfied with the close collaboration with Imec, the world-leading PV research institution," said Dr. Zhifeng Liu, R&D Director of Jolywood. "And we're very delighted with the excellent progress in the development of the high-efficiency bifacial n-PERT solar cells that have come as part of our collaboration. With our strong commercialisation capabilities and experience, we look forward to transferring the achievements into commercial production."

The new bifacial cells developed by the two parties use narrow (~40 μm) printed silver (Ag) fingers on the front side and printed aluminium (Al) fingers on the rear, the latter making contact with the emitter. By using Al instead of AgAl for the rear contacts, the cost per cell is lowered to US$0.01/Wp. On a batch of M2-sized cells (area: 244.3 cm²), an average conversion efficiency of 21.9 percent was demonstrated, with the best cell topping 22.1 percent. Used in bifacial operations under standard front illumination conditions in conjunction with an additional 0.15 sun rear illumination, these cells can achieve an efficiency of 25 percent.

Additionally, Imec also fabricates screen-printed monofacial n-PERT cells with efficiencies up to 22.8 percent, which is a state-of-the-art result for an industry-compatible fabrication process.

Also, the PV module has been proven compliant with the essential requirements, and a certificate from TÜV SÜD, the prestigious German product testing organisation.

Jolywood is the world leader in the development, production and marketing of high-efficiency mono-crystalline N-type bifacial solar cells. The company is the leading N-type Bifacial Cell manufacturer in the world and focuses on cutting-edge technology innovation to further improve cell efficiency and to lower the levelised cost of electricity (LCOE). Imec is an international R&D and innovation hub, active in the fields of nanoelectronics and digital technologies, where its strength lies in combining its well-established microchip technology and profound software and ICT expertise.

 
*Image is credited to Jolywood