Core Insights - Fudan University's research team led by Liang Jia has developed a tin-based perovskite solar cell that achieves a world record in photoelectric conversion efficiency while being environmentally friendly throughout its lifecycle [1][2] - This innovation addresses critical challenges in lead-free and sustainable green photovoltaic technology, marking a significant breakthrough in clean energy materials in China [1] Group 1: Technological Advancements - The research team focused on defect regulation, interface optimization, and charge carrier extraction over the past five years, establishing a comprehensive technical system from material growth to energy band regulation and interface engineering [2] - The newly developed tin-based perovskite solar cell has achieved a photoelectric conversion efficiency of 17.7%, surpassing the previous record of approximately 16.5% [2] Group 2: Practical Applications - The team is conducting research on large-area cell fabrication and scalability, aiming to transition the technology from laboratory settings to practical applications [2] - High-quality tin-based perovskite films have been successfully produced at the square centimeter level, achieving record-level efficiency in large-area devices [2]

Core Viewpoint - Fudan University has developed the world's most efficient perovskite solar cell with a conversion efficiency of 17.7%, which is non-toxic and environmentally friendly, marking a significant milestone in green energy [1] Group 1: Technology and Innovation - The new perovskite solar cell demonstrates a conversion efficiency of 17.7%, which is a notable achievement in solar technology [1] - The research findings have been published in the journal "Nature," indicating a high level of scientific validation and potential for further development [1] Group 2: Market Applications - The solar cell is expected to be widely used in building photovoltaics and wearable devices, expanding its market applications [1] - This innovation signifies a new milestone in the green energy sector, potentially influencing future energy solutions [1]

Core Viewpoint - The development of lead-free tin-based perovskite solar cells by a research team at Fudan University marks a significant breakthrough in sustainable photovoltaic technology, addressing environmental and health concerns associated with lead-based solar cells [1][2]. Group 1: Research and Development - The research team has successfully developed a tin-based perovskite solar cell with a power conversion efficiency of 17.7%, overcoming challenges related to oxidation, structural stability, and interface defects that have historically hindered performance [2]. - The team established a comprehensive technical system covering material growth, energy band regulation, and interface engineering, enabling the production of high-quality tin-based perovskite films on a larger scale [2]. Group 2: Economic and Technical Advantages - Tin-based solar cells are projected to have significantly lower theoretical costs compared to silicon-based cells and are compatible with flexible substrates and roll-to-roll manufacturing processes [2]. - The bandgap of the tin-based system is closer to the ideal value for photovoltaic materials, facilitating high power conversion efficiency and cost-effective large-area production [2]. Group 3: Future Directions - The research team aims to collaborate with industry partners to advance the commercialization of tin-based perovskite solar cells, targeting applications in building-integrated photovoltaics, wearable energy devices, automotive rooftops, and off-grid clean energy systems [3].

Group 1 - The world's first sub-angstrom snapshot spectral imaging chip "Yuheng" has been developed by a team led by Professor Fang Lu from Tsinghua University, marking a significant advancement in intelligent photonics technology for high-precision imaging and measurement [2] - The RoboChallenge, the first large-scale, multi-task benchmark test for real robots operating in real physical environments, has been launched, providing reliable and comparable evaluation standards for visual language action models in robotics [2] Group 2 - A new type of artificial muscle developed by a research team from Ulsan National Institute of Science and Technology can switch between "soft and flexible" and "hard and powerful" states, capable of lifting objects weighing 4,000 times its own weight, which may advance soft robotics, wearable devices, and medical assistive technologies [4][5] - Fudan University has developed a tin-based perovskite solar cell that achieves a world record light-to-electricity conversion efficiency of 17.7% while being environmentally friendly throughout its lifecycle [5] - The "Linglong No. 1" modular small reactor has successfully completed its cold test, laying a solid foundation for subsequent fuel loading and commercial operation, with an expected annual power generation of 1 billion kWh, sufficient to meet the electricity needs of 526,000 households in Hainan and reduce carbon emissions by approximately 880,000 tons [5]