Jolywood touts 24.5% TOPCon cell efficiency for quantity production

• China-based PV backsheet and high-efficiency PV module supplier Jolywood (Suzhou) Sunwatt Co (Jolywood) believes its latest iteration of an n-type TOPCon (Tunnel Oxide Passivated Contact) can attain 24.5% conversion efficiencies in volume production, the greatest in China for such a cell design.

Jolywood kept in mind that its J-TOPCon 2.0 handling innovation, established together with Jiangsu Jietai Optoelectronics Technology (JTech), preserved its original direct plasma resource innovation to jointly establish a POPAID (Plasma Oxidation as well as Plasma Assisted in-situ Doping) deposition procedure where the tunneling oxidation as well as doped amorphous silicon deposition is achieved without disturbing the vacuum process.

This is likewise vital to reducing procedure actions and production costs, while enhancing process tool throughput, according to Jolywood.

The company claimed it was unusual for Chinese companies to efficiently introduce new finishing processes for introduction into mass production.

The density of various finishing can be regulated by ± 0.1 nanometers, and higher conversion performance as the fill element (FF) is enhanced and also the return rate raised by 2%.

Lin Jianwei, founder of Jolywood just recently told PV Tech that the firm was most likely to strike 24.5% conversion effectiveness by following year.

TOPCon cell efficiencies are expected to peak at 28.7%, after that replaced with tandem cells (Perovskite/Silicon) that get to over 32% conversion efficiencies.

HZB and a group of European scientists have actually set a new perovskite and silicon tandem cell performance record of 28.15% at the beginning of 2020, going beyond Oxford PV's record of 28.0%.