该研究拓展了外围基团的功能特性，并为解决有机光伏的效率瓶颈-非辐射能量损失过高提供参考。 近期，相关研究成果发表在《能源与环境科学》(Energy&Environmental Science)上。研究工作得到国家 自然科学基金委员会、中国科学院等的支持。 为明确描述分子外围强电子效应的功能特性，该团队引入具有强电负性的苯并三氮唑(BTz)进行外围功 能调控，并基于一锅法得到两类苯并三氮唑异构体。研究证实了，外围基团对分子堆积、给受体相互作 用及共混形貌的多重影响，并揭示了外围缺电子基团通过分子内相互作用诱导主骨架电子云分布重排， 进而调控异质结能量景貌及非辐射能量损失的作用机制。研究发现，由于非辐射能量损失的差异，两类 外悬异构化的受体分子YBTz-1和YBTz-2表现出明显不同的光伏性能，分别达14.7%和19.1%。同时， YBTz-2受体的低非辐射能损特性使其在多组分器件中具有良好应用。研究表明，将YBTz-2进行掺杂 后，YBTz-2可在保持开路电压基本不变的前提下，改善三组分异质结的纳米形貌，并提高器件短路电 流密度和填充因子，实现19.9%的高转换效率。 进一步，研究揭示，外围功能基团介导的受体结 ...

Core Insights - China's "New Three Samples" (electric vehicles, lithium-ion batteries, solar cells) have shown strong export momentum despite external trade pressures, indicating resilience and international competitiveness [1][2] - The export figures for the first four months of 2023 reveal significant growth in electric vehicles and lithium-ion batteries, while solar cell exports saw a decline in value but an increase in quantity [2][3] Export Performance - From January to April 2023, the export values for electric vehicles, lithium-ion batteries, and solar cells reached 125.47 billion yuan, 155.40 billion yuan, and 62.24 billion yuan, reflecting year-on-year growth rates of 10.8%, 25.1%, and -26.5% respectively [2] - In April alone, the export volumes for electric vehicles, lithium-ion batteries, and solar cells were 308,087 units, 36.09 million units, and 83.79 million units, with year-on-year growth rates of 37.8%, 25.8%, and 66.6% respectively [2] Factors Driving Growth - The growth of the "New Three Samples" is attributed to continuous technological innovation, a complete industrial chain, and supportive government policies [3] - Local governments are also reporting strong export performance, with Hunan Province's exports of these products growing by 69.2% in the first four months of 2023 [3] Global Expansion Strategies - Companies are shifting from simple product exports to more comprehensive global strategies, including overseas manufacturing and establishing technology partnerships [4][5] - The hydrogen energy sector is emerging as a new force in exports, with significant investments in projects like a hydrogen energy headquarters in Saudi Arabia [4][5] Future Market Potential - The global demand for renewable energy and environmentally friendly products is expected to drive continued growth in the "New Three Samples" sector [7] - Local governments are actively supporting export initiatives, with plans to double exports of these products by 2024 in regions like Shanxi Province [7] Competitive Advantages - Chinese companies benefit from a complete supply chain in the electric vehicle sector, leading to competitive pricing and technological advancements [8] - Innovations in battery technology and electric vehicle systems position Chinese firms at the forefront of the global market [8]

Core Viewpoint - The article discusses the population growth trends in provincial capital cities in China, highlighting that while these cities are experiencing population increases, the overall national population is declining. This phenomenon is attributed to various factors including economic opportunities, public services, and living costs in provincial capitals [1][5][10]. Summary by Sections Population Growth in Provincial Capitals - As of May 12, 2025, 24 out of 27 provincial capitals have released their 2024 population data, with 23 showing an increase. Among these, 6 cities had a population increase exceeding 100,000, with Guiyang leading at 199,600 [1][5]. - The overall national population decreased by 139,000 in 2024, contrasting with the growth in provincial capitals [5]. Factors Influencing Population Influx - Provincial capitals attract population due to their role as industrial, technological, and financial hubs, offering high-value job opportunities [1][10]. - The concentration of quality public services, including education and healthcare, also plays a significant role in attracting residents [1][10]. - The relatively moderate cost of living in many provincial capitals makes them appealing to young graduates seeking employment [1][10]. Case Studies of Population Growth - Xi'an, recognized as the northern city with the highest population growth in 2024, saw an increase of 89,400 residents, marking a 55% growth over 14 years [7][8]. - Guiyang's population growth is attributed to its robust industrial development, with a GDP of 577.74 billion yuan in 2024, reflecting a 6% increase [12][13]. Future Trends and Challenges - The article suggests that the trend of population growth in provincial capitals may not continue indefinitely, as urban management capabilities will be increasingly tested [2][16]. - There is a notable disparity in population growth among different provincial capitals, with some experiencing minimal increases or even negative growth [15][16].

Core Viewpoint - A new fully organic solar cell developed by Kanazawa University and Queen's University has achieved a record power conversion efficiency of 8.7%, more than doubling the previous record, paving the way for the practical application of environmentally friendly solar cells [1][2] Group 1: Technology and Innovation - Traditional silicon-based solar cells have high efficiency but pose environmental burdens due to harmful substances, while perovskite solar cells raise concerns due to lead compounds [1] - Fully organic solar cells, made entirely from carbon-based materials, can be safely disposed of after use, significantly reducing environmental costs [1] - Previous efficiency of fully organic solar cells was only 4%, far below silicon (27%) and perovskite (26%) solar cells, primarily due to two technical bottlenecks: the need for strong acids, bases, or high-temperature annealing in the preparation of conductive organic electrodes, and damage to lower layer structures during multi-layer stacking processes [1] Group 2: Breakthroughs and Future Prospects - The research team employed a "gentle process" to overcome these challenges, developing a transparent electrode based on the conductive polymer PEDOT:PSS, which can be prepared at 80°C without acids or bases [2] - They also introduced a carbon nanotube electrode lamination technique, forming electrodes on the solar cell barrier film and attaching them to the device, preventing damage to the underlying organic films during electrode manufacturing [2] - This combination of innovations has led to a significant increase in the efficiency of fully organic solar cells to 8.7%, marking a crucial step towards the practical application of high-performance fully organic solar cells [2] - Future applications for fully organic solar cells are expected in environmentally sensitive areas such as farmland and wearable devices, leveraging their lightweight and flexible characteristics [2]

Group 1 - The core objective of the tariff war initiated by Trump was to suppress China, but it backfired, damaging the U.S. industries instead [10] - The U.S. reliance on Chinese critical minerals for its clean energy sector was highlighted, showing that tariffs on these minerals harmed American industries [3][5] - The Biden administration's approach to tariffs was more targeted and effective compared to Trump's broad measures, which inadvertently hurt U.S. industries [5][7] Group 2 - The international response to U.S. tariff policies has been one of resistance, with calls for unity against U.S. trade bullying, emphasizing the need to maintain a multilateral trade system [1] - Trump's declining approval ratings and public dissatisfaction with his policies indicate a lack of support for his tariff strategies, which have created uncertainty in global trade [9][10] - The European economy is facing significant threats due to U.S. tariff policies, with officials expressing a desire for negotiations to resolve trade issues [10]

"我们看中了民企在陕西战略性新兴产业发展中的机遇。"陕西中天禹辰航空智能科技有限公司董事 长兼总经理徐祥勇说。该公司落户商洛市，正在打造集无人机研发、生产、培训和算力服务于一体的综 合性基地，填补陕南地区高端无人机规模化生产空白。 民间投资"步调"持续加快，民企撑起"半边天"，吴刚认为主要得益于政策叠加效应释放、营商环境 优化以及民企发展信心提振。 民企深度融入产业链群建设，增厚陕西产业"家底"，加速陕西产业格局重构。"全省装备制造业、 高技术制造业占比提升，民间投资、工业投资快速增长，升级类消费需求旺盛，产业结构转型升级进一 步加快。"省统计局副局长、新闻发言人胡清升说。（记者 杨晓梅） "十四五"以来，陕西落实国家政策、出台多项举措、开展"三个年"活动，从科创培育、投资促进、 金融赋能、助企纾困等维度发力，鼓励、支持民间资本参与重大基础设施和优势产业项目建设，激发民 企活力，壮大民营经济，推进高质量发展。 "航空、军工等高技术产业对民企开放，产业升级需求为民企发展提供了沃土。2020年至2023年， 我们的营收复合增长率达到59.28%。"西安三角防务股份有限公司副总经理王海鹏总结公司发展原因时 说。该公 ...

Core Insights - Jiangsu Province has showcased significant technological advancements in the new energy and electric vehicle sectors during the "14th Five-Year Plan" major scientific achievement release and award ceremony, highlighting the province's innovation breakthroughs in these fields [1][7] Group 1: Solar Energy Innovations - Nanjing University has developed a world-record efficiency perovskite tandem solar cell, significantly enhancing battery efficiency through innovative strategies, with results published in top academic journals [3] - Yangzhou University has achieved a maximum efficiency of 27.3% for back-contact crystalline silicon solar cells, marking the first time crystalline silicon solar cell efficiency has surpassed 27% [3] Group 2: Biomass Energy Conversion - Southeast University has developed key technologies for the flexible production of biochar and hydrogen fertilizer from multi-source biomass, with over 80 patents and 200 SCI papers published, achieving industrial applications in multiple locations in Jiangsu and promoting in eight countries including Spain [3] - Nanjing University of Science and Technology has innovated strategies for efficient conversion of straw into fuel ethanol, overcoming traditional technological bottlenecks, with results published in high-level journals and the establishment of a company with financing of several million yuan [3] Group 3: Electric Vehicle Technologies - China University of Mining and Technology has tackled key technologies for high-efficiency and reliable switched reluctance drive motor systems for electric vehicles, leading the development of rare-earth-free electric vehicle drive systems [5] - Nanjing University of Posts and Telecommunications has proposed key technologies for the safe and efficient integrated operation of electric vehicles and charging facilities, significantly reducing failure rates and operational costs while improving charging efficiency and safety monitoring accuracy [5] - Jiangsu University has developed an intelligent energy management controller and digital twin testing platform for hybrid vehicles, enhancing fuel economy and controller development efficiency [5] Group 4: Energy Utilization and Recycling - Hohai University has created the River Wind Intelligent Source platform, breaking through key technologies for micro-scale airflow and optimization design in large wind farms, improving planning and design efficiency [6] - Nanjing University of Information Science and Technology has developed efficient stripping and regeneration technology for retired lithium iron phosphate battery cathode materials, achieving an annual production capacity of 3,000 tons and a production value of 100 million yuan, promoting the industrialization of battery recycling [6] Group 5: Industry Collaboration and Development - The "High-Quality Development of New Energy and Electric Vehicle Industry" event in Yancheng serves as a platform for dialogue between education and industry, aiming to enhance collaboration between universities and the new energy sector, fostering innovation and technological advancements [7]

4月28日，仕净科技发布了2025年一季报。报告显示，今年一季度仕净科技实现营业收入7.35亿元，归 母净利润0.53亿元，单季实现扭亏为盈。去年光伏电池供需严重失衡已经得到了初步缓解，今年一季度 出现海内外需求走强的情况，新增装机大幅上升。仕净科技在TOPCon光伏电池的布局或可以迎来转 机，收获坚守的回报。 国内抢装潮+国外新兴市场高景气，一季度业绩显著提升 仕净科技主营向光伏、消费电子、汽车制造、钢铁冶金、水泥建材等众多行业提供环境污染防治领域经 济有效的整体解决方案，其中光伏板块是最重要的下游产业。同时仕净科技资建设了24GW高效太阳能 电池片及其产业配套生产基地，一期年产18GW TOPCon高效太阳能电池片项目已于2023年12月28日投 产。 2025年一季度国内光伏新增装机59.71GW，同比+30.5%，其中3月新增20.24GW，同比+124.06%， 受"430"、"531"光伏装机新政节点临近的影响，市场有抢装的需求。同时3月份电池组件出口 30.01GW，同比+11%，环比+53%，巴基斯坦、巴西、沙特等新兴市场维持高景气。 受到近期光伏市场需求增加的影响，仕净科技光伏废气治理业务以 ...

价格仍然疲软，结构性问题仍然存在。 一季度GDP平减指数-0.8%，仍在负值区间，3月份消费者物价指 数（CPI）同比-0.1%，生产者物价指数（PPI）同比-2.5%，价格仍然疲软，反映国内需求仍需提振。一季 度产能利用率74.1%，仍在季节性偏低位运行，供需缺口仍待弥合。3月规模以上发电量同比仅1.8%，显 著低于工业增速，反映地产及高耗能行业弹性仍然不足。除此之外，地产新开工面积同比-18.1%，施工面 积持续收缩，房企资金到位同比-3.9%，投资端"磨底"状态未改。 Q： 请问重阳投资， 如何解读2025年一季度经济数据 ？ A： 4月16日，国家统计局发布2025年一季度经济数据。2025年一季度实际GDP同比增长5.4%，超 市场预期，中国经济迎来开门红。 经济超预期回升，政策和出口韧性形成支撑。 一季度经济数据超市场预期，主要受工业、基建投资和消 费拉动。3月份工业增加值上升至7.7%，新能源汽车、金属切削机床和太阳能电池等新动能产量同比均超 15%，或主要受到一季度海外客户抢出口影响，这与3月出口交货值7.7%的高增速两相印证。3月广义基建 投资增速同比上升至12.6%，财政资金逐步落地，基建 ...