JinkoSolar touts new LeTID testing standards as its solar cells show minimal degradation

Facebook
Twitter
LinkedIn
Reddit
Email
JinkoSolar said that it had focused on reducing the oxygen and metal contents in its P-type mono-PERC and N-type monocrystalline wafers to reduce the impact of LeTID, which resulted in its P-type mono-PERC cell efficiencies only degrading by around 1%, while its N-type monocrystalline cells efficiencies only degraded 0.2%.

Leading ‘Silicon Module Super League’ (SMSL) member JinkoSolar has highlighted success using new LeTID (Light elevated Temperature Induced Degradation) testing standards in minimising performance losses in its P-type mono-PERC and N-type monocrystalline solar cells.

JinkoSolar said that it had focused on reducing the oxygen and metal contents in its P-type mono-PERC and N-type monocrystalline wafers to reduce the impact of LeTID, which resulted in its P-type mono-PERC cell efficiencies only degrading by around 1%, while its N-type monocrystalline cells efficiencies only degraded 0.2%. 

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

The tests were conducted using newly established methodologies that would be incorporated into the forthcoming IEC 63202-1 standard. This includes solar cells tested under conditions of 75°C, 1000W/m2 and 500h testing time.

Testing was undertaking by Wind Power Systems Quality Test Center, IEE, and CAS.

Dr. Jin Hao, Vice President of JinkoSolar commented: “The LeTID of modules is a result of the degradation of solar cells, including both LID and LeTID of cells. The testing method employed was conducted outdoors and is referenced in the Standard. The strong testing results of JinkoSolar's monocrystalline products were a result of the Company's sustained and large investment in R&D.”

Dr Hao has been the IEC 63202-1 standard chief editor and Chair of the IEC/TC82 Standards Workgroup. This Standard has also been verified by VDE and Intertek, two authoritative certification authorities, according to JinkoSolar.

PV Tech has been featuring the LeTID issues, which includes a detailed insight by Dr Radovan Kopecek, one of the founders of ISC Konstanz as well as a free technical paper overview of the issues from Meng Xiajie of LONGi Solar.

7 October 2025
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 7-8 October 2025 is our third PV CellTech conference dedicated to the U.S. manufacturing sector. The events in 2023 and 2024 were a sell out success and 2025 will once again gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing in the U.S. out to 2030 and beyond.
10 March 2026
Frankfurt, Germany
The conference will gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing out to 2030 and beyond.

Read Next

Premium
October 6, 2025
Talon PV aims to be the first US company to safely manufacture TOPCon cells at scale, backed by European technology and a crucial First Solar licensing deal.
October 3, 2025
The US solar manufacturing industry is feeling bullish, despite the policy whiplash inflicted over the summer and the increased pressure on US solar supply chains.
October 2, 2025
PV products using perovskite technology could assume a dominant position within the next ten years, according to module producer Qcells' CTO.
Premium
October 2, 2025
PV Talk: Qcells’ CTO Danielle Merfeld discusses the imminent opening of America’s first integrated c-Si ingot-to-module factory and her belief in solar’s long-term strengths.
September 29, 2025
Indian solar manufacturer Waaree has said it does not expect to pay additional duties on its solar cell imports to the US, following the start of an antidumping and countervailing duty (AD/CVD) investigation by the US Customs and Border Patrol (CBP).
Premium
September 25, 2025
An anticipated uptick in US cell manufacturing presents opportunities for European PV tool producers, says RENA Technologies’ Michael Vees.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
October 7, 2025
Manila, Philippines
Solar Media Events
October 7, 2025
San Francisco Bay Area, USA
Solar Media Events
October 21, 2025
New York, USA
Solar Media Events
November 25, 2025
Warsaw, Poland