AIKO introduced its 4th generation Infinite Ultra module based on BC cell technology at Intersolar
Cell-level improvements contribute approximately 5 W of additional module power
The residential Z Series offers an all-black design and 40-year product and performance warranties
At the recently held Intersolar Europe 2026, leading solar manufacturer AIKO introduced what it calls 4th generation back-contact (BC) solar modules. In an interview with TaiyangNews, Christian Peter, Managing Director of AIKO’s Solar Lab Europe, spoke about the cell- and module-level developments in this generation of modules.
The latest product is based on AIKO’s existing BC technology, which it calls ABC. Peter said the company has implemented several improvements at the cell level, such as improved passivation, an anti-reflective area, and an aluminum oxide (AlOx) layout enhancement, which together resulted in a 5 W power increase.
At the module level, the company says it has reduced the creepage distance – the distance between the cells and the edge of the glass. This distance prevents electrical leakage or breakdown and provides moisture protection. According to Peter, the company achieved this by using a new sealing material with a breakdown strength of 12 kV/mm, compared with 9 kV/mm for conventional materials.
The 4th-generation modules eliminate the bluish border around the cells, giving the cell edges a completely black appearance, says Peter. He adds that this improves the module’s aesthetics, which is particularly important for residential applications.
AIKO introduced its 4th-generation G4 Infinite Ultra module for C&I and utility-scale applications. The module is rated at 690 W with an efficiency of 25.6%. It measures 2,382 × 1,134 × 30 mm and weighs 32.2 kg.
For residential applications, the company presented its ABC Z Series module, which uses the same ABC cells but features an all-black appearance. The module has a rated output of 500 W and an efficiency of 25.0%, measures under 2 m², and weighs less than 25 kg. According to Peter, it retains AIKO’s advantages in power density, partial-shading performance, and hotspot resistance. It comes with 40-year product and performance warranties.
The company offers residential modules in both glass-glass and glass-backsheet configurations. Peter said glass-glass modules are preferred in markets such as Germany, while glass-backsheet products are more popular in parts of Southern Europe. The white backsheet configuration provides a small efficiency advantage but has a visibly different appearance, with white areas between the cell strings.
AIKO plans to allocate an additional 10 GW of products to the European market. Peter also referred to a new 20 GW factory in Jinan, which is expected to become operational in 2027. He added that the company also has a factory designed to operate without wastewater discharge.
