It was reported that China-based Risen Energy, a company primarily focused on grid-connected PV power generation systems, announced its new achievement in the research and development of perovskite and HJT tandem solar cells. A power conversion efficiency of 30.99% was reportedly achieved by Risen Energy’s R&D institution, and the result was confirmed by the China National Center of Supervision and Inspection on Solar Photovoltaic Products Quality (CPVT).
As a leading solar module manufacturer in China, Risen Energy believes that HJT solar cells with unique structure and features are promising products among p-type and n-type single junction solar cells. HJT’s advantages are significant in perovskite and silicon tandem solar cells, making it naturally suitable as a base for tandem cells. HJT is seen as one of the best bottom cells for crystalline silicon and perovskite tandem cells. Other types of crystalline silicon cells, due to the lack of ITO film, require redesign of the structure prior to tandem processing, which increases cost and complexity.
Dr. Yang Bochuan, Director of Risen Energy Research Institute, said that the R&D team will continue to focus on innovative HJT technology to promote the mass production of solar products with high cost-effectiveness and ultra-low carbon content. The perovskite tandem solar cells with a power of 850W or more are planned to be delivered in 2027.
In addition, Risen Energy plans to promote the HJT module power to 740W and the cell power conversion efficiency to 26.8% in 2025, then the next target is 760W.
