Image: Vincent Shaw, PV Magazine
The Chinese solar module manufacturer Longi unveiled a new solar module this week at the SNEC 2025 -fair in Shanghai. The product uses its own hybrid by the company with interconnected back contact (HIBC) crystalline silicon solar cell based on a full-size silicon wafer, which achieved a world record power conversion efficiency of 27.81% in mid-April.
The company said that the 2,382 mm x 1.134 mm module offers 25.9% efficiency and 700 W output output, with a power density of 259 W/m². The temperature coefficient is -0.24%/C.
Longi said the cells are manufactured using both passivation with low and high temperature on the front. It added that the cell design has an “advanced” moisture barrier with a densely cut polymer matrix.
“The Tairay-Wafer uses a welding structure with one line with improved performance of cracking,” said Longi chairman Zhong Baoshen, without providing further details.
In April the company said that its Central Research Institute has independently developed the record setting HIBC cell.
“By re -designing both cell architecture and the material systems, we have reached simultaneous breakthroughs in optical management and transport efficiency of the carrier,” a spokesperson said PV -Magazine At that time. “This opens a new limit for improving module power density and sets a benchmark for the next generation of photovoltaic performance.”
Solar cells with return contact, known for high efficiency and compatibility, have led efficiency side list since the record of 20.3% of Sunpower in 2007 with the help of Interdigitated Back Contact (IBC) technology. BC Technology has reached eight consecutive world records i
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