On April 26, the State Key Laboratory of Photovoltaic Science and Technology of Trina Solar made a major announcement that its independently developed novel THBC (Hybrid Passivated Back Contact) solar cell has achieved a maximum conversion efficiency of 28%, following authoritative certification by the Institute for Solar Energy Research Hamelin (ISFH) in Germany.
It is reported that this newly introduced THBC cell utilizes a high- and low-temperature hybrid passivation technology. It powerfully combines the exceptional passivated contact of TOPCon with the highly efficient passivation capability of HJT. By further integrating a back-contact electrode structure design, it ultimately realizes a conversion efficiency of 28%.
It is worth mentioning that, unlike traditional TBC (Tunnel Oxide Passivated Contact Back Contact) cells, the THBC is equally suitable for the mass production of thin silicon wafers (110-130 micrometers) and is highly compatible with current mainstream TOPCon production lines.
Currently, Trina Solar is leveraging its established THBC pilot line to accelerate and lead the industrialization of THBC modules. It is projected that the power output of industry-standard medium-format modules (2382mm * 1134mm) could exceed 700W. Reportedly, Trina Solar’s new generation of products based on THBC technology will be released in the near future.
Gao Jifan, Chairman of Trina Solar, stated that in the future, Trina Solar will forge a new paradigm of product technology leadership driven by the "TOPCon + THBC" dual-engine, with both technologies mutually supporting one another.
On the one hand, the company will deeply tap into the potential of TOPCon across more than 85% of global bifacial power generation scenarios, driving the continuous upgrade to high-efficiency 3.0 or even 4.0 versions, thereby fully utilizing its comprehensive front-and-back power generation advantages. On the other hand, the company will rapidly advance the full-scale industrialization of THBC in monofacial power generation scenarios, leveraging its performance advantage of higher front-side power output to create enhanced value for customers.
Source：EnergyTrend