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Light-scattering structures to boost solar performance

An international team of scientists developed a nanoparticle structure which, when added to a solar cell, was shown to scatter light and potentially reflect it many times within the cell, contributing to a noticeable jump in current.

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Study finds 100% renewables would pay off within 6 years

New research from Stanford University researcher Mark Jacobson outlines how 145 countries could meet 100% of their business-as-usual energy needs with wind, water, solar and energy storage. The study finds that in all the countries considered, lower-cost energy and other benefits mean the required investment for transition is paid off within six years. The study also estimates that worldwide, such a transition would create 28 million more jobs than it lost.

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N-type solar cell with aluminum-titanium passivating contact achieves 21.9% efficiency

Scientists in Australia have demonstrated a new way to apply a passivating contact layer to silicon cells. They produced an n-type cell with aluminum-titanium passivating contact and 21.9% efficiency, and claimed the technique could open up new possibilities for the use of transition metal oxides in cell passivation.

European energy without Russian gas

Scientists in Denmark have modeled the likely impacts of reduced gas supply on the European energy mix up to 2050. Their research finds that if the continent is to achieve the Paris Agreement goal of limiting global average temperature increase to 1.5 C, then gas consumption would need to be heavily reduced, anyway. In less ambitious climate scenarios, however, limited gas supplies could delay the phase-out of coal-fired electricity and lead to longer-term uncertainty over fuel and electricity prices.

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Straight to storage via solar integrated batteries

Scientists in China evaluated the prospects for various approaches to integrating both solar generation and energy storage in a single device. Their work outlines several ways this could increase the efficiency of solar energy storage, and recommends that future research on this area should focus on integration of materials with the highest specific capacity for energy storage, alongside the dual function of solar energy harvesting.

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Surface engineering for an 18.6% efficient large-area inverted perovskite solar cell

Scientists in China worked with nickel-oxide as a charge transport layer in a perovskite solar cell, and were able to overcome several of the performance challenges associated with this material through careful surface engineering. Using this approach, the group fabricated an inverted perovskite solar cell measuring 156×156 mm that achieved 18.6% efficiency, along with ‘remarkable’ stability, according to its designers.

Reverse bias – a hidden challenge for perovskite solar cell stability

New research from renowned PV scientist Martin Green and colleagues at UNSW reveals that perovskite solar cells may struggle to deal with reverse-bias caused by uneven shading or other issues likely to appear in the field. Both the reverse-bias itself and resulting build up of heat can cause several of the materials commonly used in perovskite solar cells to degrade, and these issues have received only limited attention in research published to date. Solutions, however, are at hand.

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UK High Court orders nation to revise net zero strategy

The UK High Court has sided with environmental groups in a judgment that will require the government to re-evaluate its climate strategy for the 2030s and make up for an apparent shortfall that would see it miss the target of lowering carbon emissions by 78% from 1990 levels by 2035.

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Applying perovskite solar cells onto BIPV steel products

Swansea University will collaborate with Indian multinational Tata Steel to investigate perovskite solar cell materials that could be applied directly onto coated steel to make building-integrated PV components. The partnership will add to an “active buildings” project that the Welsh university has been running for several years.

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Eco-friendly solvent for a 16.7% perovskite solar cell

Scientists in Germany looked to eliminate the use of toxic solvents in the production of perovskite solar cells, replacing them with a more environmentally material called dimethyl sulfoxide (DMSO) which has so far proved difficult to integrate into processes suitable for large-scale production. The group demonstrated a scalable blade coating process using DMSO as the only solvent, and reached cell efficiencies close to those achieved using more toxic substances.

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