Researchers in China have developed a dipolar passivation method that reduces defects and improves charge transport in solar cells based on narrow-bandgap tin lead perovskite, enabling the fabrication of all-perovskite tandem solar cells with efficiencies of around 30% and enhanced stability. The dipolar passivation strategy strengthens the ohmic contact, promotes efficient hole injection into the hole transport layer, and repels electrons from the perovskite interface, reducing non-radiative recombination and carrier transport losses. The cell achieved a power conversion efficiency of 24.9% and retained around 87% of its initial efficiency after 1,025 hours, showing promising long-term stability. The researchers aim to further improve the dipolar passivation method for enhanced stability in tandem devices, contributing to the ongoing efforts to develop more efficient and sustainable solar energy solutions.
Tag: China
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Renewables giant China nears peak emissions, Beijingers see mountain peaks for first time in decades
The Global Carbon Project's annual Global Carbon Budget reveals a slight rise in carbon emissions in 2025, putting the world on track to hit the 1.5°C warming limit within four years. China, the world's biggest polluter, is showing signs of reaching peak emissions or plateauing, driven by a unique mix of motivating factors including economic and business advantages from clean energy. The importance of reducing emissions and supporting renewable energy technologies to combat global warming is emphasized, with China's success in decarbonization positioning itself as a global leader in clean energy production. The article warns against downplaying the importance of climate action based on a country's proportionate contribution to global emissions and highlights Australia's transition to renewable energy as an economic opportunity. The overall message is to learn from China's example and take advantage of cheap opportunities for zero emissions energy.
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Crocodile Economics Comes to Africa: Trade, Solar, and the New Energy Map
The global economy is showing signs of decoupling economic growth from emissions, with many countries experiencing a decrease in emissions while GDP rises. China is on the verge of shifting to absolute decoupling, with African countries importing solar hardware on an unprecedented scale. Chinese companies are investing in onshore capacity for solar panels and battery packs in Africa, following the model of industrial migration seen in East Asia. The development of grid-detached microgrids using Chinese solar panels and batteries is accelerating in sub-Saharan Africa, alongside plans for a high-voltage direct-current super-grid to meet the region's growing electricity demand with interconnected renewable grids. Overall, clean-energy investment and the African Continental Free Trade Area are building markets that reward predictability, transparency, and stability, positioning Africa as a more unified major economy on the global stage.
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Musk proposes PV-powered AI satellite network to fight global warming
Space-based solar power developers are advancing technology to capture solar energy in orbit and transmit it to Earth, with several demonstration projects planned for the near future. Elon Musk believes that AI satellite constellation could make small adjustments to prevent global warming or cooling, but there are concerns about the risks and potential consequences of using such technology to control solar radiation. Countries like South Korea and China are already planning large-scale space solar projects to deliver renewable energy worldwide, highlighting the growing interest in innovative solutions to combat climate change.
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Mutirão in action at C40 World Mayors Summit as cities lead the way to COP30
City leaders from around the world are showcasing real solutions for climate action at the C40 World Mayors Summit in Rio de Janeiro ahead of COP30. The theme of the summit is "Mutirão in Motion: Cities Leading the Way to COP30" and highlights Brazil's tradition of community collaboration to build solutions. Initiatives such as the Global Methane Hub and the Urban Planning Accelerator are being launched to support cities in cutting methane emissions and integrating climate and equity into city master plans. Mayors are calling for increased funding for urban climate finance and are pushing for the 'Baku-to-Belém Roadmap to $1.3 trillion' to mobilize public and private investment in cities, states, and regions, especially in the Global South. Investment in electric bus fleets in Brazil, Chile, Colombia, and Mexico has surged to US$4.3 billion, with a partnership aiming to drive port decarbonization through a $1 billion Global Port Sustainability-Linked Loan initiative. Mayor Sadiq Khan emphasizes the importance of cities in addressing climate change and building a sustainable future, while Mayor Eduardo Paes highlights the role of C40 cities in reducing emissions and creating green jobs. Mark Watts, Executive Director of C40, discusses China's "irreversible" green transition and growing global ambition, with efforts in transitioning to a more sustainable economy seen as a positive development in the fight against climate change, influencing other nations to follow suit. This shift towards sustainability is crucial in addressing the climate crisis and creating a more environmentally friendly future.
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Golden Week Goes Electric: China’s Holiday Travel Becomes a Showcase for the Clean Economy
During China's Golden Week holiday, gasoline demand fell 9% year over year while the number of electric or hybrid vehicle trips rose sharply, with one in five car journeys made in electrified vehicles. The shift towards electrified transportation is evident in the country's infrastructure and cultural practices, with rail travel hitting record levels and the number of charging ports doubling. China's 15th Five-Year Plan outlines a "green transformation" of the economy with goals of peak carbon emissions before 2030 and carbon neutrality by 2060, emphasizing grid flexibility and storage integration. The plan also highlights the importance of clean electricity and grid support, with a focus on self-reliance in critical minerals to support the electrified economy. Overall, the direction of travel towards a more sustainable energy system is clear, with Golden Week travel patterns reflecting the progress of China's energy transition.
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As Renewables In China Surge, Some Questions Are Raised
China is leading the world in renewable energy, with President Xi Jinping committing to reducing greenhouse gas emissions and expanding renewable energy sixfold. The country has developed a massive renewable energy development in Tibet, including the Talatan Solar Park providing 16,930 megawatts of power. China is rapidly expanding its clean energy infrastructure, utilizing smart ideas to address excess renewable energy and reducing air pollution by 41 percent since 2014. Despite concerns about the impact of ultra-high-voltage power lines on nearby residents, the benefits of breathing cleaner air from renewable energy sources far outweigh the drawbacks. Renewable energy advocates should emphasize these benefits more strongly in discussions about their impact on homes and the economy.
https://cleantechnica.com/2025/10/11/as-renewables-in-china-surge-some-questions-are-raised/