Spanish startup develops BIPV systems for tunnel exits, entrances
Spain-based Izpitek has developed an 86 kW building-integrated photovoltaics (BIPV) installation for tunnel entrances and exits that supplies power for lighting, demonstrating how solar energy can be adapted to complex architectural environments.
China’s Hefei BOE Solar Technology claims 27.37% efficiency for perovskite solar cell
The Chinese perovskite solar technology developer said the result is currently under testing by an unspecified third-party authoritative laboratory in China. The achievement is part of the company’s efforts to bring its perovskite cell technology closer to commercial production.
JinkoSolar pushes on perovskite-silicon tandem solar with new partnership
JinkoSolar has signed a strategic cooperation agreement with XtalPi, an “AI for Science” platform company, to pursue high-throughput R&D on perovskite-crystalline-silicon tandem solar cells using an AI platform and quantum-physics-based models.
Localized polysilicon thinning improves TOPCon solar cell performance
UNSW researchers boosted TOPCon solar cell efficiency by locally thinning the rear poly-Si layer, reducing parasitic absorption while preserving wafer integrity. The champion cell built with this approach achieved 25.10% efficiency with improved bifaciality and maintained strong passivation.
Astronergy launches 670 W TOPCon solar module with 24.8% efficiency
China’s Astronergy says its ASTRO N7 Pro module targets utility-scale PV plants and commercial rooftops, offering quarter-cell architecture, bifacial gains, and a 30-year performance guarantee.
French startup offers on-site solar module repair solution
France-based DOTSun has developed an on-site repair solution for solar panels with degraded backsheets, compatible with PA, PVDF, and PET types. The system uses a compact laminator to apply a protective film to the rear side of the module, reportedly restoring insulation and extending the service life of up to 2,000 panels per site.
Thicker alumunium oxide layers can reduce ultraviolet-induced degradation in TOPCon solar cells
UNSW researchers developed an experimentally validated model linking UV-induced degradation in TOPCon solar cells to hydrogen transport, charge trapping, and permanent structural changes in the passivation stack. They show that thicker aluminum oxide layers significantly improve UV resilience by limiting hydrogen migration, offering clear guidance for more robust TOPCon designs.
Semi-transparent photovoltaics cost-competitive only up to 50% transparency
Researchers from Spain found that semi-transparent PV systems are commercially viable only up to about 50% transparency, as higher transparency sharply reduces efficiency and increases system costs. Their analysis shows that declining power density, and not balance-of-system or financing factors, is the main driver of higher LCOE, even in high-irradiation regions.
Rising silver prices drive China’s Longi shift to copper-metallized solar cells
China’s Longi says it will begin mass production of base-metal PV modules in the second quarter of 2026 as rising silver prices intensify pressure to reduce metallization costs.
EPFL researchers enhance perovskite solar cell performance via rubidium
Researchers led by Michael Grätzel at the Ecole Polytechnique Federale de Lausanne in Switzerland have recently led efforts to improve perovskite optoelectronic properties using small-radius rubidium ion chemistry to enable more stable and efficient perovskite solar cells.
