‘Silicon Module Super League (SMSL) leader JinkoSolar has achieved a record conversion efficiency of 24.2% for a large-area N-type TOPCon (Tunnel Oxide Passivated Contact) solar cell, verified by the Photovoltaic and Wind Power Systems Quality Test Center at the Chinese Academy of Sciences (CAS).
Back in 2013, Fraunhofer ISE had reported an N-type TOPCon solar cell with a 24% conversion efficiency.
To break the record, JinkoSolar used tunnel oxide passivating contact technology on a high quality N-type monocrystalline wafer with selective doping and advanced fine-line printing.
Fraunhofer ISE had previously noted that a key hurdle in reaching high efficiencies with n-Type wafer/cells was the patterning scheme of the rear contact as the rear side metal contacts are an efficiency limiting factor.
JinkoSolar said that its N-type ‘HOT’ technology was a key R&D milestone that opened up a new path towards developing high-efficiency commercial products that competed with HIT (Heterojunction with Intrinsic Thin-layer) and IBC (Interdigitated Back Contact) technologies.
Oct 27 - Oct 29, 2020
Going into its fifth year over 200 delegates from 150 companies and 20 countries representing the PV supply chain will gather (virtually, due to COVID-19) for 3 days to discuss the technology roadmaps for PV cell advancement in GW markets. The scope of the event has been expanded this year, to cover developments in wafer supply and thin-film investments and technologies alongside all the regular benefits to all stakeholders tracking PV technology and investment trends for the next 5 years.