High-Purity Spherical Aluminum Powder Empowers the Photovoltaic Indu
Amid accelerating global energy transition, the photovoltaic (PV) industry continues its robust growth. In crystalline silicon solar cells, Aluminum Powder serves as a critical raw material for rear-side electrode formation.Hunan Ningxiang JiWeiXin Metal Powder Co., Ltd.(“JiWeiXin”), with over two decades of expertise in metal powder R&D and manufacturing, is now supplying high-performance, highly consistent high-purity Spherical Aluminum powder to support the PV supply chain in achieving higher cell efficiency and production reliability.
In mainstream Al-BSF (Aluminum Back Surface Field) and PERC (Passivated Emitter and Rear Cell) solar cell technologies, aluminum paste—formulated with Fine Aluminum Powder—is screen-printed onto the rear of silicon wafers and fired at high temperatures to form a p⁺-doped layer. This layer reduces carrier recombination, enhances light reflection, and improves electrical conductivity.
The process demands stringent control over the aluminum powder’s purity, particle size distribution, sphericity, and oxygen content. JiWeiXin’s gas-atomized spherical aluminum powder meets these requirements through precise process control.
Aluminum purity ≥99.7%
Oxygen content <0.5%
Particle size: 1–6 μm
The product has been successfully integrated into aluminum pastes used by multiple domestic and international PV materials manufacturers, demonstrating stable sintering behavior, low wafer warpage, and excellent batch-to-batch consistency—key attributes for high-volume, high-efficiency solar cell production.
Certified under ISO 9001:2015 and ISO 14001:2015, JiWeiXin adheres to the principle of “Precision in Materials, Accuracy in Service,” continuously delivering reliable metal powder solutions to advanced industries including renewable energy, additive manufacturing, and electronics.