Technology and R&D

The Japan Photovoltaic Energy Association (JPEA) has released a voluntary reference guide to support adoption of vertical bifacial PV in Japan, outlining design, performance, and compliance considerations for projects in snow-prone, high-latitude, and space-constrained conditions.

China-based PV equipment supplier Ideal Energy (Shanghai) Sunflower Semiconductor has completed an AI-enabled pilot line for ultra-thin, flexible heterojunction (HJT) solar cells, targeting lightweight power systems for space and near-space applications.

U.S. scientists used density functional theory to reveal how sodium ions are stored in nanoporous carbon anodes for sodium-ion batteries, identifying dual ionic and metallic storage mechanisms within the pores. Their findings provide practical design guidelines to improve battery voltage, safety, and commercial viability for stationary energy storage.

DEC’s “Dongchu No. 1” prototype completed more than 100 charge-discharge cycles at 65 meters depth in a freshwater lake.

Rising silver prices are pushing PV manufacturers toward copper-based metallization, with DK Electronic Materials targeting 2026 for large-scale deployment of high-copper paste solutions, while Fraunhofer ISE warns efficiency trade-offs remain unacceptable.

Researchers in Spain have tested the erosion resistance of common galvanized coatings using both free-falling sand and forced-air sand-impingement methods. The study found that continuously galvanized steel coatings showed the lowest erosion rates, outperforming HDG and Zn-Al-Mg coatings.

With data center demand rising and residential batteries evolving from backup power to grid assets, Marco Krapels, SVP and chief marketing officer at Enphase Energy, says the industry must shift from “save with solar” to “get Enphase, get paid.”

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.