Articles written by Emiliano Bellini

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Research & Development
Mild oxalic acid process enables efficient indium recovery from heterojunction solar cells A mild oxalic-acid-based hydrometallurgical process enables efficient indium recovery from indium tin oxide in solar cell waste while simultaneously releasing silver grids. The approach achieves high-purity indium oxide production through selective leaching, precipitation, and calcination under optimized conditions.
Emiliano Bellini
Jul 03, 2026
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Research & Development
Chinese scientists build 27.3%-efficient inverted perovskite solar cell based on dual-molecule interface Researchers in China developed a dual-molecule interfacial layer for inverted perovskite solar cells that locks molecular ordering, suppresses defects and stress, and improves charge extraction and interfacial stability. The optimized devices reach 27.3% efficiency and maintained strong operational stability under long-term light soaking and outdoor testing.
Emiliano Bellini
Jul 03, 2026
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Research & Development
New research shows ground-mounted PV needs enhanced earthing systems to safely manage lightning-induced step voltages Large ground-mounted PV plants face significant lightning-induced transient voltages that can increase step-voltage hazards, especially in open, high-exposure terrains, requiring carefully designed earthing and bonding systems. Researchers from Austria used frequency-resolved electromagnetic simulations to show that equipotential bonding reduces risks, but effectiveness depends strongly on soil resistivity and is not guaranteed by standard grounding resistance limits alone.
Emiliano Bellini
Jul 02, 2026
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Research & Development
Glass frit optimization in silver paste leads to measurable gains in solar cell efficiency Researchers in China found that fine tuning the lead(II) oxide (PbO) and silicon dioxide (SiO₂) molar ratio in silver paste glass frits affects silver-silicon contact resistance in crystalline silicon solar cells. They found that an intermediate ratio optimizes interfacial structure, lowering contact resistance and improving efficiency by 1 percentage point.
Emiliano Bellini
Jul 02, 2026
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Research & Development
German researchers achieve world record 25.5% efficiency for perovskite-CIGS tandem solar cell The result was confirmed by the European Solar Test Installation (ESTI).
Emiliano Bellini
Jul 01, 2026
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Research & Development
Vertical agrivoltaics for oats Researchers in Sweden studied oat production under a vertical agrivoltaic system during the 2024 growing season, comparing it with ground-mounted and open-field conditions. Results showed that crop performance was generally higher under agrivoltaic systems, highlighting their potential for productive dual land use.
Emiliano Bellini
Jul 01, 2026
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Markets & Policy
Maxeon, Qcells settle patent dispute Maxeon Solar Technologies and Qcells have settled their global patent dispute, ending all litigation over TOPCon solar cell technology and related claims.
Emiliano Bellini
Jul 01, 2026
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Technology & Products
Biwatt launches modular sodium-ion residential storage system The new PowerNest R5 Series features a wire-free, stackable architecture utilizing NFPP sodium-ion chemistry. It is available as a standalone battery pack or as an all-in-one system with an integrated single-phase hybrid inverter.
Emiliano Bellini
Jul 01, 2026
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Technology & Products
Daikin unveils residential heat pump combining air-to-air and hydronic heating The X Series heat pump integraes cooling, hydronic heating, and domestic hot water via one outdoor unit with inverter-based load sharing. It uses R-32 refrigerant, supports 180–230 L hot water storage, and connects to HEMS via Onecta for centralized, PV-optimized energy management.
Emiliano Bellini
Jul 01, 2026