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Ultra-thin, radiation-resistant solar cells for new space applications

UK scientists have developed a solar cell based on a layer of gallium-arsenide just 80 nanometers thick, with similar performance to much thicker devices. It showed excellent resistance to damage from radiation exposure, making it ideal for high-radiation satellite/space applications.

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Gallium doping for 24.47%-efficient p-type heterojunction solar cells

French scientists have studied the fabrication of silicon heterojunction cells with p-type wafers. With the adoption of gallium doping, the p-type products could come close to matching the performance of their n-type counterparts. But optimal doping levels will be key to advancing this tech, said the researchers.

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Flashing solutions for perovskite tandem cells, modules

A new white paper by testing equipment specialist Wavelabs outlines key challenges that the solar industry will face when it comes to testing and characterizing perovskite-silicon tandem cells in manufacturing environments.

Singapore to adopt solar forecasting model

Scientists have completed a one-year trial of a model that calculates solar irradiation forecasts up to 24 hours in advance. Singapore’s Energy Market Authority now plans to adopt solar irradiance forecasting, as the model has an average error rate below 10% for one-hour forecasts.

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Longi launches all new back contact module, promising 22.8% efficiency

Longi has launched a series of modules featuring an all-new hybrid passivated back contact cell technology, with which it claims a maximum module efficiency of 22.8% in mass production. It will initially offer the modules in 54, 60, 66 and 72 cell formats, targeting rooftop and distributed generation applications.

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Putting bifacial modules to the test

US scientists recently put different bifacial solar cells and modules through a series of tests at elevated temperature, humidity, voltage and mechanical stress levels. The tests revealed a range of light-induced and potential-induced degradation mechanisms that modules will likely suffer in the field.

Recycling key to solar sustainability

A new study of the environmental impacts of renewable energy finds significant opportunities for solar to reduce its impacts in various categories, including human health, resource depletion, and environmental damage. The study notes in particular that more work is needed to establish a comprehensive reuse and recycling network for end-of-life PV products.

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The weekend read: Catalyst for an EU solar cell, module comeback

Plans for Europe’s largest-ever PV cell and module factory are taking shape, with equipment orders placed and a projected start date in mid-2024. Enel Green Power has received €118 million ($116.36 million) in funding from the EU Innovation Fund to support the project, out of a total €600 million investment. The EU is hoping it will catalyze further investment in similar projects, and start a high-tech comeback for European solar manufacturing.

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Flexible, roll-to-roll printed perovskite solar cell hits 16.7% efficiency

Australian scientists have demonstrated a flexible perovskite solar cell using roll-to-roll compatible “printing” type processes, which could potentially be applied in large-scale manufacturing. Of particular note is the development of a viable roll-to-roll process to deposit the electrode layer, which has thus far been a major challenge. Cells fabricated by the group achieved a maximum efficiency of 16.7%.

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Improving n-type TOPCon solar cells

Scientists in China have studied the formation of contacts in tunnel-oxide passivated contact (TOPCon) solar cells, and the role of high-temperature annealing processes on the quality and performance of cells. Their findings could open up pathways for scientists looking to squeeze even more efficiency out this rapidly growing cell technology.

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