In mid-June, the 18th SNEC PV Power & ES Expo (2025) was held at the National Exhibition and Convention Center in Shanghai, bringing together global PV industry leaders and experts to explore cutting-edge technologies and chart industry development. Maxwell showcased its comprehensive solar cell manufacturing solutions, including:
? Perovskite /HJT Tandem Solar Cell Manufacturing Solution
? HJT Solar Cell Manufacturing Solution
? HJT Direct Copper Plating Technology Solution
Perovskite/HJT Tandem Solar Cell Manufacturing Solution — Pioneering a New Era of High-Efficiency Energy
HJT and perovskite solar cells exhibit exceptional compatibility, with their structurally complementary designs synergistically enhancing efficiency. Perovskite/crystalline silicon tandem solar cells achieve a theoretical efficiency limit of up to 43%, promising vast application prospects.
Maxwell embarked on R&D of perovskite/HJT tandem solar cell in 2019 and advanced to mass production equipment development in 2023. By 2024, Maxwell's laboratory achieved critical milestones in perovskite process equipment, including prototype machines for large-area inkjet printer, evaporation equipment, and atomic layer deposition (ALD) equipment — accelerating the progress of perovskite tandem solar cell toward 100 MW-level pilot production.
From 2024 to early 2025, Maxwell’s full-textured perovskite/silicon tandem solar cell obtained 31.50% efficiency certification from Fraunhofer Institute for Solar Energy Systems (ISE) and 34.02% efficiency certification from the National Photovoltaic Industry Metrology and Testing Center of China (NPVM).
Leveraging deep expertise in HJT and tandem technologies, Maxwell has developed a full integrated production line solution for perovskite/HJT tandem solar cells. This breakthrough enables:
? 200MW annual production capacity per line
? 29% cell conversion efficiency (with anti-reflective coating)
? 100% proprietary equipment- all core and automated systems independently developed
HJT Direct Copper Plating Technology Solution — Accelerating Breakthroughs in Cost Reduction and Efficiency Improvement
Compared to screen printing, Maxwell’s direct copper plating technology solution for HJT cells reduces metallization costs by over 30% with its core technology of N-side seedless copper plating, while boosting cell conversion efficiency by over 0.3%. When combined with low-silver pastes, cost advantages are further amplified.
This integrated solution covers patterning and metallization processes, featuring Maxwell-developed core equipment with high throughput, exceptional process stability and superior production yield, making it suitable for mass production.
Building on its tandem solar cell solutions, Maxwell will empower customers to continuously optimize large-area fabrication processes, enhance product stability, reduce manufacturing costs, and accelerate the industrial-scale adoption. This will drive the evolution of the PV industry and support the global transition to green energy.