Jolywood touts 24.5% TOPCon cell efficiency for volume manufacturing

Share on facebook
Facebook
Share on twitter
Twitter
Share on linkedin
LinkedIn
Share on reddit
Reddit
Share on email
Email
Jolywood noted that its J-TOPCon 2.0 processing technology, developed in cooperation with Jiangsu Jietai Optoelectronics Technology (JTech), retained its original linear plasma source technology to jointly develop a POPAID (Plasma Oxidation and Plasma Assisted in-situ Doping) deposition process where the tunneling oxidation and doped amorphous silicon deposition is achieved without interrupting the vacuum process. Image: Jolywood

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

Jolywood noted that its J-TOPCon 2.0 processing technology, developed in cooperation with Jiangsu Jietai Optoelectronics Technology (JTech), retained its original linear plasma source technology to jointly develop a POPAID (Plasma Oxidation and Plasma Assisted in-situ Doping) deposition process where the tunneling oxidation and doped amorphous silicon deposition is achieved without interrupting the vacuum process. 

This is also key to reducing process steps and production costs, while increasing process tool throughput, according to Jolywood. 

The company said it was rare for Chinese firms to successfully innovate new coating processes for introduction into mass production.

The thickness of various coating can be controlled by ±0.1 nanometers, and higher conversion efficiency as the fill factor (FF) is improved and the yield rate increased by 2%.

Lin Jianwei, founder of Jolywood recently told PV Tech that the company was likely to hit 24.5% conversion efficiencies by next year.

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

HZB and a team of European researchers have set a new perovskite and silicon tandem cell efficiency record of 28.15% at the beginning of 2020, surpassing Oxford PV’s record of 28.0%. 

Read Next

November 24, 2021
The US International Trade Commission has recommended that the Section 201 safeguard tariffs on solar cells and modules be extended.
November 19, 2021
JA Solar has revealed plans to build a 5GW module assembly plant in Chaoyang City, Liaoning Province.
November 19, 2021
Canadian Solar has warned of solar cell overcapacity next year, slamming the breaks on its own cell manufacturing expansion plans while accelerating on its module assembly roadmap.
PV Tech Premium
November 17, 2021
Following the US Customs and Border Protection's updated guidance on its WRO on silicon metal products, PV Tech Premium speaks to legal experts on what’s changed for solar imports.
November 17, 2021
China has revealed its initial subsidy limits for existing renewables projects in 2022, however it remains to be seen whether the funding is to be topped up.
November 15, 2021
US solar manufacturers behind the controversial anti-circumvention petition have said they are “evaluating all options” and could refile petitions in the future.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
December 1, 2021
Solar Media Events
February 1, 2022
London, UK
Solar Media Events
February 23, 2022
London, UK
Solar Media Events
March 23, 2022
Austin, Texas, USA
Solar Media Events
March 29, 2022
Lisbon, Portugal