JinkoSolar responds to Hanwha Q CELLS’ passivation patent infringement claim

Share on facebook
Facebook
Share on twitter
Twitter
Share on linkedin
LinkedIn
Share on reddit
Reddit
Share on email
Email
JinkoSolar said that its preliminary analysis of the alleged infringement of US patents were “without technical or legal merit. JinkoSolar, therefore, categorically refutes Hanwha's allegations.” The company added that it was considering a legal petition to seek making the patents invalid. Image: Hanwha Q CELLS

Leading ‘Solar Module Super League’ (SMSL) member JinkoSolar has been the first to respond to Hanwha Q CELLS patent legal action filed in the US and Germany, specifically against JinkoSolar, LONGi Solar and REC Group.

JinkoSolar said that its preliminary analysis of the alleged infringement of US patents were “without technical or legal merit. JinkoSolar, therefore, categorically refutes Hanwha's allegations.”
The company added that it was considering a legal petition to make the patents invalid.

A key patent in the case is US 9,893,215 B2, which was issued to Hanwha Q CELLS and SolarWorld Industries in February 2018, although the original [215] patent stems from 2010.

The [215] patent relates to solar cell surface passivation widely used in PERC (Passivated Emitter Rear Cell) technology as well as bifacial cells.

Specifically, the patent describes a solar cell structure, which incoprates the processes used in depositing both a thin layer of aluminium oxide and a second dielectric layer (other materials are also described) that can contain hydrogen via atomic layer deposition (ALD) and followed by a thicker layer of silicon oxide, which is deposited by plasma enhanced chemical vapour deposition (PECVD). 

The process reduces recombination of charge carriers in the cell, boosting conversion efficiency, due to better surface passivation when ALD and PECVD are used, rather than one or the other deposition process. However, Hanwha Q CELLS is focusing its infringement cases on the cell structure in relation to nanometre thickness of the passivation layers within the [215] patent.

Hanwha Q CELLS is also seeking an order to stop JinkoSolar, LONGi Solar and REC Group from importing, marketing, and selling the infringing products in Germany and the US.
 
Responses from LONGi Solar and REC Group are expected shortly.

Read Next

October 22, 2021
Essentia Energia has begun operations at its 475MW Sol do Sertao solar power plant in the Brazilian state of Bahia
October 18, 2021
Recent solar wafer and cell price increases from both LONGi Solar and Tongwei, which have seen prices rise by between 5.6 – 7.7%, have underscored heightened volatility in the solar supply chain.
October 14, 2021
JinkoSolar has laid claim to a new n-type monocrystalline silicon solar cell conversion efficiency record, taking that efficiency rating to 25.4%.
October 11, 2021
A subsidiary of Indian conglomerate Reliance Industries has acquired solar module manufacturer REC Group and a 40% stake in EPC and O&M solutions provider Sterling and Wilson.
October 1, 2021
As the PV sector continues to focus on cell production technologies and the transition from p-type to n-type, Finlay Colville teases an upcoming opportunity to watch Professor Martin Green's keynote presentation from PV CellTech 2021 Online.
PV Tech Premium
October 1, 2021
Liam Stoker reflects on the worsening crisis affecting solar module manufacturing and supply, with five of the industry's largest manufacturers calling for industry-wide collaborative efforts to resolve it.

Subscribe to Newsletter

Upcoming Events

Upcoming Webinars
November 10, 2021
8am (PST) | 5pm (CET)
Solar Media Events
December 1, 2021