Quality

Developed by an international research group, the novel anti-reflective coating is based on silicon dioxide and zirconium dioxide. It reportedly minimizes a solar cell’s reflection loss, while enhancing its light absorption properties.

Scientists from China have developed a novel system that can detect DC arcs in PV installations through a back-propagation neural network. The novel technique reportedly ensures a detection time of less than 200 ms.

Reports of broken module glass with no obvious cause have begun to crop up at large PV projects. Module design, glass manufacturing, and interactions in the field between modules and trackers are at play and a clear solution has yet to emerge. Early signs suggest an update to certification standards may be needed.

Taking a rigorous approach to inspection is crucial across the energy storage supply chain. Chi Zhang and George Touloupas, of Clean Energy Associates (CEA), explore common manufacturing defects in battery energy storage systems (BESS’) and how quality-assurance regimes can detect them.

Scientists in Spain tested PV modules under partial shading conditions, aiming to better understand the formation of performance-damaging hotspots. The study reveals a potential issue particularly affecting half-cell and bifacial modules, which may cause accelerated performance loss and is not covered by current testing/certification standards.

Should the industry be alarmed at the potential degradation susceptibility of tunnel oxide passivated contact (TOPCon) solar cells? Or are the problems easily addressed and more a reflection of rushed-to-market products? pv magazine contributor and consultant Götz Fischbeck reports.

It is estimated that 10 GW of solar modules in Germany suffer from prematurely aging backsheets, with sites of all sizes affected. pv magazine Germany’s Cornelia Lichner looks at how to detect and repair such defects.

PV initiatives should be designed to last, as several well-meaning off-grid solar projects for the developing world have floundered over the years.

Scientists in Norway used various imaging and characterization techniques to analyze the cells and other components of silicon PV modules that had been installed in the field for more than 10 years. The group’s aim was to isolate the role of moisture in various mechanisms that cause performance loss over time, and to understand how these mechanisms progress over long-term installation in real outdoor conditions.

Frank Haugwitz arrived in China in June 2002 as technical adviser to the solar-focused Sino-German Renewable Energies in Rural Areas Program. He has directly observed the nation’s rise to solar superpower status.