Chinese manufacturer Jolywood claims it has reached 23.5% cell efficiency on the production lines for its n-type TOPCon technology. The achievement, which has not been verified by a third party, represents a 0.3% improvement to Jolywood’s reported mass production efficiency.

Scientists in Germany have developed a “heavy duty” test to provide insight into the long term effects of potential induced degradation in PV modules. The tests go well beyond those established by IEC standards and seek to guide manufacturers and investors on the best choice of materials – encapsulants in particular – when it comes to long term PID resistance.

Scientists in the U.S. and South Korea have identified what could be a new route to high-efficiency perovskite-silicon tandem solar cells. Through engineering negatively charged particles in the passivation layer, the group made a tandem cell with 26.7% efficiency. With further tweaks to the silicon layer they expect to be able to surpass 30%.

Scientists in Moscow have developed a titanium-based electrode material for metal-ion batteries they claim challenges the perceived wisdom of the element’s cathode potential and which could give researchers a ‘playground’ for the design of sustainable, cost-effective, titanium-based electrodes.

Manufacturing operations in China are beginning to return to normal, with Taiwan-based research firm PV InfoLink reporting 80% capacity utilization across the supply chain in March. But the broader impact that Covid-19 will have on global demand for PV remains to be seen, and will depend on the extent to which the outbreak can be contained, says PV InfoLink chief analyst Corrine Lin.

A paper by scientists at the University of California San Diego has outlined a technology roadmap for the development of solid-state batteries – and four challenges to address for the technology to advance.

The Swiss PV equipment supplier posted the loss for 2019, citing increasingly fierce competition in China, and plans to continue a strategic realignment of its business with the options including the establishment of a European PV manufacturing operation.

A report by Norwegian energy consultant DNV GL has considered the opportunity for long-term energy storage to play a role in balancing annual supply and demand fluctuations in a renewables-led grid. Using 58 years of Dutch weather and energy consumption data, the study found long-term solutions such as green hydrogen could make a valuable contribution – but perhaps not as much as some analysts believe.

Getting the most out of a bifacial module requires a rethink at almost every level of system design and the industry is hungry for field data generated by such systems to better inform energy yield modeling and define the best approaches to maximizing yield at minimal cost. In May, the U.S. National Renewable Energy Laboratory began a three-year study into bifacial performance which is beginning to yield results.

By tweaking the chemical composition of the material to create a ‘triple’ perovskite, scientists at the U.S. National Renewable Energy Laboratory say they have overcome one of the technology’s inherent stability issues and fabricated a perovskite cell which achieved 27% efficiency in a tandem format with a silicon device.