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07.06.2012 15:46

Fraunhofer CSP confirms Q.CELLS modules offer unlimited PID protection

Bitterfeld-Wolfen, 7 June 2012 – Q.CELLS is the first photovoltaic manufacturer to fundamentally solve the problem of solar module output loss due to potential induced degradation (PID) and integrate this knowledge into the serial production of its solar cells and modules. As part of a cross-sectional study, the Fraunhofer Center for Silicon Photovoltaics (CSP) in Halle, Germany has now confirmed that Q.CELLS solar modules reliably prevent this risk and maintain their full output. The high failure rate of the investigated brand modules from other manufacturers confirm how relevant the topic is.

The Frauenhofer CSP subjected 13 types of modules from renowned manufacturers to an accelerated PID test. All modules had a glass-foil construction with 60 six-inch polycrystalline solar cells. Of the 13 modules tested, nine modules showed an output loss – partially in excess of 90%. On average, nominal output decreased by 56%. Only four module types showed no signs of degradation. The tested Q.PRO modules from Q.CELLS made it through the test without output losses compared to their initial specifications. “We are pleased with the positive results, which reflect on our long-term experience and quality claim”, said Karl Heinz Küsters, Head of Research and Development at Q.CELLS. “Thanks to intense research activities, Q.CELLS found a solution for the PID phenomena early on and today provides a true, measurable and sustainable edge in quality to its customers by secure yields without power loss.” Together with Hot-Spot-Protect and the Tra.Q coding unique to each individual cell, Anti-PID forms the core of Q.CELLS Yield Security, which guarantee proven, stable yields from cells and modules.

Chart source: Fraunhofer-Center für Silizium-Photovoltaik CSP
PID (potential induced degradation): One of the most significant negative influences on the energy yield of solar modules is so-called potential induced degradation (PID). This can cause a solar module's output to decrease when it is subject to high negative voltage between the solar cell and the ground during use, especially in large facilities. The ideal solution to this problem is PID-resistant technology on a cell level.

About Q-Cells SE
Q.CELLS is an international company offering an extensive product portfolio in photovoltaics ranging from solar cells and modules to complete photovoltaic systems. Q.CELLS develops and manufactures its products at its headquarters in Bitterfeld-Wolfen, Germany, and markets them through a global distribution network. The company has a second production facility in Malaysia. More than 200 scientists and engineers at Q.CELLS are pursuing the rapid development of technologies in order to achieve the company’s objective: quickly and permanently reducing the cost of photovoltaic, making the technology more competitive. Close networking between research, development and production allows Q.CELLS to mass produce innovations quickly, thereby assuming the role of a technology leader in the photovoltaic sector. Q-Cells SE is listed in the Prime Standard of the Frankfurt Stock Exchange (QCE; SIN 555866).

Executive Board: Dr Nedim Cen (CEO, CFO), Dr Andreas von Zitzewitz (COO, CSO)
Chairman of the Supervisory Board: Prof Dr h c Karlheinz Hornung

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