Trinasolar sets another TOPCon solar cell efficiency record
Trinasolar announced that its industrial larger-area 210 ×182 mm² n-type bifacial i-TOPCon cell has achieved an efficiency of 25.9%, setting a new record for large-area industrial TOPCon solar cell. This is confirmed by the famous 3rd party calibration center in the Institute for Solar Energy Research in Hamelin (ISFH CalTeC) in Germany.
Solar cell/module efficiency gains are always incrementally inching up. This marks the 27th time that Trinasolar has set and broken the world record in cell/module conversion efficiency or output power.
“We are delighted to announce the wonderful achievement by our research team. It not only sets a new record for large-area TOPCon cells but also breaks the world record for n-type TOPCon cells created and maintained by Fraunhofer ISE since 2017”, said Dr. Chen Yifeng, vice president at Trinasolar.
Trinasolar cell details
The record-breaking solar cell uses Trinasolar’s rectangle wafer design that the company first deployed with the golden dimension of 210 ×182 mm². The substrate is an n-type phosphorus-doped Cz silicon wafer with a high minority carrier lifetime.
By integrating with tunnel oxide passivating contact, advanced boron-doped emitter, advanced light trapping and very fine line printing technologies, the front side efficiency of this industrial size bifacial n-type i-TOPCon cell can now reach 25.9%.
TOPCon history
TOPCon is now the dominate technology in PV industry, due to its high level of industrialization, higher customer value and lower cost.
TOPCon stands for “Tunnel Oxide Passivated Contact,” a revolutionary approach that reduces electron recombination, increasing the solar cell’s overall energy conversion efficiency. The tunnel oxide layer acts as an effective barrier, preventing electron loss and enhancing the particle’s movement across the cell. The architecture allows for higher charge carrier mobility, ensuring more efficient electron transport and significantly reducing recombination losses.
This means that compared to traditional outshining p-type cells, n-type TOPCon cells demonstrate superior performance in efficiency, temperature coefficient, and potential-induced degradation (PID) resistance.
As an early mover of n-type technology, Trinasolar began the research and development of TOPCon in 2015 and leads the way in the industrial application of i-TOPCon technology. Trinasolar remains steadfast in developing TOPCon advanced technology and continues to upgrade new technologies, showcasing its resilience and technological leadership in the TOPCon field. The company holds more than 500 patents on TOPCon technology by July, ranking among the top in the TOPCon field.
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