Wedoany.com Report-Jun 13, Chinese solar module manufacturer Longi introduced a new solar module at the SNEC 2025 trade show in Shanghai, showcasing advancements in high-efficiency photovoltaic technology. The product features Longi’s proprietary hybrid interdigitated back contact (HIBC) crystalline silicon solar cell, which in April reached a world-record power conversion efficiency of 27.81%.

The newly released module measures 2,382 mm by 1,134 mm and offers a conversion efficiency of 25.9% with a maximum power output of 700 W. This translates to a power density of 259 W/m². It also features a low temperature coefficient of -0.24% per degree Celsius, which helps maintain performance under elevated temperatures.

According to the company, the HIBC solar cells are produced using a dual passivation technique, combining low- and high-temperature processes on the front side. Longi further noted that the cell design includes an advanced moisture barrier created with a densely cross-linked polymer matrix to enhance durability and environmental resistance.

Longi Chairman Zhong Baoshen said: “The Tairay wafer uses a one-line welding structure with improved any-cracking performance,” though he did not elaborate on specific technical details during the event.

The record-setting HIBC cell was developed independently by Longi’s Central Research Institute. A company spokesperson said in April: “By redesigning both the cell architecture and material systems, we achieved simultaneous breakthroughs in optical management and carrier transport efficiency. This opens a new frontier for enhancing module power density and sets a benchmark for the next generation of photovoltaic performance.”

Back-contact (BC) solar cell technology, including interdigitated back contact (IBC) designs, has long been associated with high-efficiency performance. Since 2007, when SunPower achieved a 20.3% efficiency using IBC technology, back-contact cells have frequently led global efficiency rankings. Longi’s HIBC design continues this trend, marking the eighth consecutive time BC cells have set new world records.

Longi’s latest innovation aligns with ongoing global efforts to improve solar power efficiency and reduce levelized cost of electricity (LCOE). With higher energy yield and improved durability, the new module is positioned for both utility-scale and high-performance distributed generation applications.

This product launch reinforces Longi’s role in driving solar technology development and contributes to advancing photovoltaic system performance worldwide. The company’s continued investment in research and development reflects its commitment to enhancing the value and competitiveness of solar energy in global markets.