Longi’s HIBC Silicon Solar Cell Hits 28.29% Efficiency, Certified by ISFH

The significance here is less the headline number than the certification path: an independent German institute validating a Chinese manufacturer's cell architecture gives the result external credibility in a segment where efficiency claims are routinely contested. HIBC's hybrid passivation approach matters because it targets the loss mechanisms that cap conventional back-contact designs, which is where the next round of cost-per-watt gains has to come from. Whether this moves from a European launch showcase to pilot or mass production is the open question — and how competitor architectures respond.