Recently, a research team led by Professor Yan Hui from the College of Materials Science and Engineering at Beijing University of Technology, in collaboration with Dr. Zhang Jinyan's team from Jinshi Energy Co., Ltd. in Fujian Province, has achieved a remarkable breakthrough in the field of high-efficiency crystalline silicon solar photovoltaic cells. Their groundbreaking research, titled "Maximizing carrier extraction in hybrid back-contact silicon solar cells," was published in the prestigious international academic journal Nature (Vol. 652, pp. 650-654).

Through innovative processes and theoretical advancements, the team successfully developed high-efficiency crystalline silicon cells suitable for mass production, achieving a certified efficiency of up to 27.62%. This accomplishment integrates the technological strengths of Tunnel Oxide Passivated Contact (TOPCon) cells and Silicon Heterojunction (SHJ) cells into an Interdigitated Back Contact (IBC) solar cell architecture. By refining the cell structure and optimizing the dynamics of photo-generated carriers, the team has significantly minimized optical losses and carrier surface recombination. This provides a novel technological approach and theoretical foundation for overcoming the current efficiency limitations of crystalline silicon cells.