Jolywood takes TOPCon solar cell to 23.5% conversion efficiency record

• Jolywood (Taizhou) Solar Technology Carbon Monoxide, the PV module production arm of significant PV backsheet producer Jolywood (Suzhou) Sunwatt Carbon monoxide stated it had actually made a conversion performance development with n-type TOPCon (Tunnel Oxide Passivated Contact) high-efficiency bifacial solar cells.

The PV maker had actually formerly accomplished a conversion effectiveness of 23.2% at the end of 2019. The brand-new 0.3% greater performance cell (23.5%) was attained with an enhanced uniform boron emitter with Al2O3/SiNx as passivation movies as well as a metallization procedure for much better call, according to the firm.

As a manufacturing prepared procedure, Jolywood made use of n-type 158.75 mm x 158.75 (G1) silicon wafers to accomplish the document conversion effectiveness.

Making use of Ion implantation is generally related to recompense an in-situ boron-doped TOPCon layer with phosphorus that can decrease leak existing and also streamline manufacture actions for cells including passivated get in touches with.

Having actually formerly established and also has recurring R&D tasks with IBC (Interdigitated Back Contact) cells that make use of ion implantation, Jolywood claimed that utilizing ion dental implant with its TOPcon cell stayed clear of the possibility for leak currents as well as location dangers, aiding to supply better output-power of 3-5Wp.

At the PV module degree, Jolywood claimed that the bifacial passivating-contact module enhanced bifaciality, had reduced destruction as well as a reduced temperature level coefficient than previously.

The business did not reference any kind of third-party independent body that might have validated the document effectiveness.