Core 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 development of flexible silicon-perovskite tandem solar cells is expected to facilitate commercial applications in lightweight, high-power photovoltaic scenarios such as space and automotive solar energy [1][2] Group 1: Technological Advancements - The research team has successfully reduced the thickness of silicon wafers to 60 micrometers, allowing for flexibility without breaking at a bending radius of less than 2 centimeters [2] - An innovative "loose and dense" dual-layer buffer structure has been developed to address the challenges of mechanical stress and efficient charge transfer, enhancing the performance of the tandem cells [2] - Laboratory tests have shown that the small-area devices of the ultra-thin silicon-perovskite tandem solar cells have achieved an efficiency of 33.4%, certified by the National Renewable Energy Laboratory (NREL) [2] Group 2: Market Implications - The achievement of 30% efficiency is seen as a critical point for the large-scale commercialization of automotive solar energy, potentially transforming vehicles from energy consumers to mobile power stations [3] - Automotive companies like BYD and Changan are actively promoting solar energy integration in vehicles, with BYD's solar roof technology achieving a conversion efficiency of 23.18% and Changan's transparent solar body technology providing daily energy replenishment [4] - The collaboration between Longi Green Energy and academic institutions is expected to accelerate the commercialization of vehicle-mounted solar energy, with projections for widespread applications in logistics, cold chain, and emergency power supply [5]

本报记者 殷高峰 近日，《证券日报》记者从隆基绿能科技股份有限公司（以下简称"隆基绿能"）获悉，该公司联合苏州大学、西安交通大 学等研究团队在硅基叠层电池研究方向有了重要进展，其研发的商业尺寸硅片级柔性晶硅—钙钛矿叠层电池效率达29.8%。该 电池效率获德国弗劳恩霍夫太阳能研究所认证，成为全球首个获权威认证的该类型电池效率世界纪录。这一成果近日在线发表 在权威学术期刊《Nature》上。 据《证券日报》记者了解，车企也在积极推动车载光伏的发展。比亚迪股份有限公司（以下简称"比亚迪"）推出的智能太 阳能车顶技术已经应用在2025款汉DM-i与秦PLUS DM-i车型上。该项技术的核心是比亚迪自研的异质结电池（HJT）方案，通 过纳米级蚀刻工艺，将光电转换效率提升至23.18%，在理想光照条件下，车辆静置八小时即可补能50公里至70公里。 为此，研究团队创新构建了"疏松加致密"的双层缓冲层结构，其中疏松层能像弹簧床垫一样吸收机械应力，致密层则确保 高效的电荷传输。这一设计有效化解了应力缓冲与高效传输的矛盾。 基于该技术，研究团队研制出厚度仅60微米的超薄全硅片柔性叠层器件。该器件不仅实现了近30%的转换效率，还可 ...