Aiko Solar launches its first dual-glass module with copper instead of silver.
In a photovoltaic industry increasingly focused on efficiency, sustainability, and durability, AIKO once again takes the lead with a key innovation: its patented copper interconnection system. Integrated into its modules with ABC (All Back Contact) technology, this breakthrough redefines the performance and reliability of solar panels, especially in demanding applications.
Beyond silver: a strategic bet on copper
For decades, silver has been the standard material used in solar cell metallization. However, its intensive use—solar energy already consumes nearly 20% of the global supply—poses challenges in terms of cost, sustainability, and long-term availability.
In response, AIKO has developed a more efficient, cost-effective, and environmentally friendly solution: copper interconnection, a breakthrough that enhances both the electrical performance and mechanical strength of the module.
Key technical advantages of copper
Copper doesn’t just replace silver—it improves on it technically:
Superior conductivity: Pure copper has a resistivity of only 1.7 μΩ·cm, compared to ~5 μΩ·cm in conventional silver pastes.
Higher thermal efficiency: The low electrical resistance improves current collection, especially under high irradiation and heat.
Low-temperature process: Electroplating technology eliminates the need for high-temperature sintering, reducing thermal stress on the cell and increasing its lifespan.
Optimized mechanical strength: Copper joints—between fingers and ribbons—withstand over 5 N of tensile force, enhancing resistance to microcracks, vibrations, and impacts.
Engineered for real-world reliability
In comparative tests, AIKO’s ABC modules with copper interconnection showed significantly lower power loss compared to TOPCon modules under equivalent mechanical impacts. This makes them a highly reliable choice for installations exposed to harsh conditions, from industrial rooftops to floating PV systems.
A standout example is the AIKO Stellar ABC, a dual-glass module specifically designed for floating applications. This model combines copper interconnection, high tensile strength, and enhanced durability in aggressive environments.
Tangible benefits for installers, EPCs, and system owners
This innovation is not just a technical achievement—it’s a direct improvement in the profitability of solar projects:
- Higher sustained energy yield over time
- Less degradation from microcracks and partial shading
- Reduced thermal risk and increased safety
- Lower corrective and preventive maintenance needs
- Higher return on investment (ROI) due to operational stability
All aligned with the new goals of decarbonization and circular economy in the supply chain.
Innovation with a forward-looking vision
AIKO’s copper interconnection is not just a manufacturing innovation. It is a strategic decision that reflects the brand’s commitment to efficiency, sustainability, and real-world performance.