Emiliano Bellini
DAS Solar, UNSW build tunnel back-contact solar cell with 27% efficiency, lower silver content
Researchers from UNSW and DAS Solar developed a zero-busbar metal grid optimization approach for tunnel oxide passivated back-contact (TBC) silicon solar cells, enabling more efficient current collection at the rear surface while reducing silver consumption by 3–4 mg/W. The first TBC cells produced in mass manufacturing using this technique have demonstrated efficiencies exceeding 27%.
Bluetti launches new storage systems for balcony PV
Bluetti has launched the Balco 260 and Balco 500, two integrated balcony PV storage systems combining MPPT, inverter, battery storage and smart control in a plug-and-play architecture for urban households.
Japanese scientists achieve world record 25.14% efficiency for perovskite-CIGS tandem solar cell
The result was certified by Japan’s National Institute of Advanced Industrial Science and Technology (AIST).
The impact of rain on PV module antisoiling coating lifetime
Researchers in India developed a predictive framework combining degradation experiments, weather data, and environmental stress models to assess how rain affects anti-soiling solar coatings. They found that coating lifetime strongly depends on local climate, installation tilt, and rainwater pH.
Glass frit chemistry explains EVA-driven degradation mechanisms in TOPCon solar cells
Researchers from University of New South Wales and Jolywood found that corrosion-induced degradation in TOPCon solar cells is primarily governed by glass frit chemistry in low-aluminum silver metallization. Their findings show that barium-zinc-modified frits significantly improve resistance to acetic-acid and damp-heat stress, enabling more stable silver-silicon interfaces and reduced module-level power loss.
EU ban on Chinese inverters sparks strong response from Beijing
China strongly criticized the EU’s ban on Chinese inverters in EU-funded solar projects, warning it could damage trade relations, supply chains, and Europe’s energy transition.
Anker Solix launches 7 kWh modular battery with 5 kW bidirectional inverter
The system features AI-driven energy management, 10,000-cycle battery life, and scalable expansion up to 126 kWh.
Longi announces world record efficiency of 28.13% for silicon solar cell
Longi claims to have achieved the world’s highest efficiency for a silicon solar cell. The result was confirmed by Germany’s Institute for Solar Energy Research Hamelin (ISFH).
Japanese scientists build all-perovskite tandem solar cell with 30.2% efficiency
The four-terminal tandem device relies on FAPbI₃ nanoparticles and a spectral splitting design, combining a 24.4% wide-bandgap top cell and a 21.5% narrow-bandgap bottom cell to reach 30.2% efficiency. The system improves light utilization by directing different wavelengths to optimized subcells.
Rethinking silver paste design for TOPCon, LECO solar cells
Researchers in China have developed an evaluation framework to better assess fine-line silver pastes for TOPCon and LECO solar cells. The approach links laboratory characterization directly with production-line performance, addressing the limitations of conventional evaluation methods.
