Zheng Quan Ri Bao Wang·2025-11-26 11:28Core Insights - Longi Green Energy has achieved a significant breakthrough in silicon-based tandem solar cell technology, with a certified efficiency of 29.8%, marking the first authoritative record for this type of cell globally [1][2] - The research team's innovation addresses the challenges of flexibility and stability in commercializing tandem solar cells, paving the way for applications in lightweight, high-power photovoltaic scenarios such as space and automotive [2][3] Group 1: Technological Advancements - The silicon-perovskite tandem solar cell technology combines two semiconductor materials, significantly enhancing theoretical efficiency, but has faced challenges in balancing flexibility and stability [2] - The research team successfully reduced the silicon wafer thickness to 60 micrometers, allowing for flexibility with a bending radius of less than 2 centimeters without breaking [2] - A dual-layer buffer structure was developed to absorb mechanical stress while ensuring efficient charge transfer, resolving the conflict between stress buffering and high-efficiency transmission [2] Group 2: Commercialization Potential - The breakthrough in efficiency is seen as a critical point for the large-scale commercialization of automotive photovoltaic systems, potentially transforming vehicles from energy consumers to mobile power stations [3][5] - Automotive companies like BYD and Changan are actively promoting solar technology in vehicles, with BYD's solar roof technology achieving a conversion efficiency of 23.18% and enabling energy replenishment of 50 to 70 kilometers in ideal conditions [4] - The collaboration between Longi Green Energy and academic institutions is expected to accelerate the commercialization of automotive photovoltaics, with projections for broader applications in logistics, cold chain, and emergency power supply [5]