Hanwha Q CELLS product portfolio delivers marketleading anti-LeTID performance in Fraunhofer CSP test


Hanwha Q Cells modules were tested by Germany's FraunhoferCSP and found to display negligable power loss power loss during high-temperature testing conditions of up to 75°C. Both halfcell monocrystalline Q.PEAK DUO modules and multicrystalline Q.PLUS modules exhibited marketleading anti-LeTID performances among the nine module types tested (comprising seven mono-Si and two multicrystalline silicon modules), including modules produced by various leading solar brands. The final test batch included two modules from each category, resulting in 18 different measurements.

The results of this test were presented at the EU PVSEC conference in September titled: Benchmarking Light and Elevated Temperature Induced Degradation (LETID).

Hanwha Q CELLS: anti-LeTID pioneer and market leader

The effects of light induced degradation (LID) on PERC (passivated emitter rear cells) solar technology are well-known in the PV industry, and are tested for during standard IEC certification of solar cells. However, LeTID which is a degradation effect identified on both monocrystalline silicon (Cz-Si) and multicrystalline silicon (mc-Si) cells at temperatures above 50°C can account for cell degradation of up to 10%, but is less understood across the industry.

Hanwha Q CELLS was the first solar cell developer in the industry to link the degradation of PERC cells to high temperatures and was thus the first company to devise a solution to suppress LeTID in 2015, using its Q.ANTUM cell technology that suppresses LID as well as LeTID. While the exact root cause of LeTID is still a topic of much debate among photovoltaic researchers, Hanwha Q CELLS' Yield Security pledge guarantees that the company's mono and multi Q.ANTUM products are certified anti-LeTID a claim that few other manufacturers can make.

By controlling for both LID and LeTID, Hanwha Q CELLS can guarantee a reliable module power for the lifetime of its modules. The Fraunhofer CSP results further demonstrate the reliability and durability that the company's Q Peak DUO(Cz-Si) and Q.PLUS (mc-Si) solar modules deliver, with both module types exhibiting <1% power loss during Fraunhofer CSP stringent testing procedure.

As showcased in the graph from Fraunhofer CSP; Hanwha Q Cell's mono crystalline (Cz-Si) and multicrystalline (mc-Si) solar modules performed favorably when exposed to accelerated LeTID test conditions (CID current-induced degradation at 75°C and operation in maximum power point (MPP) mode) compared to other solar module brands tested.

Commenting on the Fraunhofer CSP test results, Hanwha Q CELLS Co., Ltd. CTO Daniel Jeong said: The performance of our Q.PEAK DUO and Q.PLUS modules demonstrates continued commitment to tackling the toughest challenges in the industry and highlights the importance of focusing our R&D efforts in areas where we can deliver the most added value to our customers.

Hanwha Q CELLS is proud to be at the forefront of anti-LeTID technology and will continue to shape and support the solar industry by developing new photovoltaic technologies and tackling head-on the technical hurdles that arise. We do this to ensure that our products are the go-to option for discerning developers who want to install quality that lasts and performs reliably, regardless of the er was presented at the 35th EU PVSEC Conference and Exhibition held in Brussels, Belgium, between September 24 -28 this year.