Technology

Researchers in Singapore have developed a new technique in which polycrystalline silicon is pulverised into powder and pelletised into ingots. The process relies on spark plasma sintering to dope the silicon with germanium and phosphorus.

German scientists have conducted a series of experiments on gallium-doped silicon solar cells to understand the causes of degradation in PV cells and modules treated with gallium rather than boron. They confirmed that the performance losses are caused by a bulk defect in the material, and found that the right combination of light and temperature can “heal” earlier damage and even lead to small improvements in overall cell efficiency.

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The Australian Energy Regulator has begun consultations to allow distributor-led standalone power systems (SAPS) to become part of the national electricity system. Proving highly successful in Western Australia, these SAPS could soon be properly rolled out in the east.

Chinese inverter brand Sungrow has signed a 79 MW inverter and 176 MWh battery energy storage contract with Sydney-based hydrogen battery company Lavo. The contract will see Sungrow add its storage solution to 16 mid-scale solar farms in Victoria.

South Korean researchers have developed an atomic cobalt-based catalyst technology that is suitable for catalyst development in a range of fields, including fuel cells, water electrolysis, solar cells, and petrochemicals. The European Commission, meanwhile, has announced plans to support green hydrogen.

In other news, Zhonghuan Semiconductor announced it will begin selling 210 mm n-type wafers and the local government in Zhejiang Province said it wants to deploy another 12.4 GW of new PV by 2024.

Scientists in the United States have fabricated a triple-junction solar cell that reached 39.5% efficiency – a world record for any type of cell under one-sun illumination. Though relying on materials and processes that are still too costly for most commercial uses, the concept could soon see actual applications in powering satellites and other space-bound technology.

With the Northern Territory town of Alice Springs turning towards renewable energy to address the challenges associated with its isolated grid, researchers from Charles Darwin University have announced they will help investigate how the outback community can facilitate its transition towards a renewables-dominated future.

Perovskite tandem technology is shaping as the route to PV cell efficiencies well beyond 27%. But building the tandem stack in a way that can be scaled into gigawatt production is not a trivial challenge, says Sebastian Gatz, VP photovoltaics for German equipment supplier Von Ardenne.