JA Solar introduces DeepBlue 5.0 n-Type TOPCon module

JA Solar has introduced the DeepBlue 5.0 photovoltaic module, marking a significant advancement in PV technology with improvements in efficiency, reliability and adaptability. Leveraging the cutting-edge Bycium+ 5.0 cell technology, the module integrates a range of innovations, including enhanced electrical architecture, refined materials and structural improvements. These advancements enable the module to achieve a power output of up to 670 W and an efficiency of 24.8 per cent. Designed for superior performance under low light conditions and diverse weather environments, DeepBlue 5.0 ensures consistent energy generation across multiple applications. With the implementation of advanced optical absorption and electrical optimisation techniques, the module reduces the levellised cost of energy (LCOE) by up to 4.3 per cent compared to its predecessor, DeepBlue 4.0 Pro. The company has focused on three key areas of improvement: the wafer, the Bycium+ 5.0 cell, and the overall module structure. The wafer now features improved resistivity uniformity, ultra-low oxygen content (3 ppma) and enhanced minority carrier lifetime. The Bycium+ 5.0 cell features high-efficiency n-type passivated contact technology, optimised light absorption and an ultra-high open-circuit voltage of 749 mV. In addition, the module integrates innovative technologies such as PII, HDP, UTG and CSE to enhance durability and reliability in extreme conditions. The DeepBlue 5.0 module has a first-year degradation rate of ≤1 per cent and an annual linear degradation of ≤0.4 per cent, setting new industry benchmarks. Mass production is scheduled to commence in the fourth quarter of 2025, with initial power ratings of 640-670 W.