Technology and R&D

China-based metallization paste supplier DK Electronic Materials says a major unnamed customer has adopted its high-copper metallization paste for gigawatt-scale solar cell production, combining copper paste with a seed-layer silver paste compatible with n-type and tunnel oxide passivated contact (TOPCon) 3.0 processes.

France-based IT services provider Cyllene has developed the RC-DC4/5G “Cyllene Box,” a network device for PV power plants that manages multiple internet connections, encrypts data, and supports compliance with the European Union Network and Information Security Directive (NIS 2).

Researchers have used multivalent amidinium ligands to boost perovskite solar cell efficiency to 25.4%, achieving over 95% stability after 1,100 hours at 85  C. The proposed approach enables controlled low-dimensional passivation layers, offering a practical route for durable, large-area perovskite devices.

A research group from the European Commission Joint Research Centre has developed a new PV climatic classification, the first to address annual yield and performance ratio. Their work resulted in 10 globally applicable clusters. “It challenges the assumption that many more classes are needed to capture PV-relevant climate,” the researchers said.

The Australian scientists designed the cell with a sodium sulfide additive to achieve uniform sulfur and selenium distribution, improving charge transport.
This controlled elemental layering reduces energy barriers and defects, enabling a certified efficiency of 10.7%.

US-based Copeland has launched its Sensi Hydro sanitary water heat pump designed to provide energy-efficient hot water for hotels, commercial buildings, and public facilities. The units feature ZW scroll compressors, independent refrigerant circuits, and backup mode to ensure reliable hot water supply.

China’s PV manufacturing sector is operating at full capacity ahead of an April 1 export tax change, contributing to module price increases of 20% to 30% in parts of the supply chain and raising risks for price-sensitive European commercial and utility-scale projects in early 2026.

United Arab Emirates software specialist Planno has launched software to automate prospecting for roof surface sites with potential for solar PV generation.

Researchers in China developed a novel two dimensional (2D) seeding agent to regulate crystallization in a 1.80-eV wide-bandgap perovskite film. A perovskite-silicon tandem device made with the resulting optimized subcell achieved an efficiency of 31.13%, outperforming a control device.

With lithium prices reaching a two-year high in early 2026, sodium-ion batteries are once again in the spotlight, as innovators on both sides of the Atlantic announce major milestones.