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Science China Chemistry 2024年第6期67卷 1922-1928页

作者： shasha zhang Wei Yao Anqi Lv Kun Liu Yusheng zhang Chifeng Zhou Huili Ma Huifang Shi Zhongfu An Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Nanjing Tech UniversityNanjing211816China

High-efficiency long-wavelength phosphorescence emissions of large singlet-triplet energy gap(ΔE_(ST))materials are essential for applications in biology and ***,few long-wavelength phosphorescence emissions of largeΔE_(ST)materials have been reported due to the weak spin-orbit coupling(SOC)and strong non-radiative ***,we develop a strategy to achieve highly efficient long-wavelength room temperature phosphorescence(RTP)emission of largeΔE_(ST)materials,which display bright red RTP emission with above 400μs lifetime and 6.5%phosphorescent quantum *** experiments and theoretical calculations reveal that the fishbone-like packing and the zig-zag interactions provide favorable conditions for suppressing the non-radiative transitions of triplet state excitons,and heavy atoms effectively promote the intersystem crossing(ISC)process for highly efficient long-wavelength phosphorescence *** universality of the method for highly efficient long-wavelength RTP emission of largeΔE_(ST)materials was further investigated in various ***,these materials with largeΔE_(ST)manifest the advantages of large color contrast on the display and utilization potentiality in information *** strategy paves the way for the high contrast display and development of information encryption with RTP emission.

关键词： room temperature phosphorescence singlet-triplet energy gap host-guest doping heavy atom effect red phosphorescence

Structure-regulated fluorine-containing additives to improve the performance of perovskite solar cells

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Nano Research 2024年第7期17卷 6080-6086页

作者： Peiya Chen Xiaoman Bi Hao Yan Yingjie Zhao Yihao Liu Zhuo Huang Qian Xiao Yongpeng Yang shasha zhang Yiqiang zhang Yanlin Song Henan Institute of Advanced Technology College of ChemistrySchool of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China Key Laboratory of Green Printing CAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences(ICCAS)Beijing Engineering Research Center of Nanomaterials for Green Printing TechnologyNational Laboratory for Molecular Sciences(BNLMS)Beijing 100190China

Perovskite solar cells(PSCs)have seen remarkable progress in recent years,largely attributed to various additives that enhance both efficiency and *** these,fluorine-containing additives have garnered significant interest because of their unique hydrophobic properties,effective defect passivation,and regulation capability on the crystallization ***,a targeted structural approach to design such additives is necessary to further enhance the performance of ***,fluoroalkyl ethylene with different fluoroalkyl chain lengths(CH_(2)CH(CF_(2))nCF_(3),n=3,5,and 7)as liquid additives is used to investigate influences of fluoroalkyl chain lengths on crystallization regulation and defect *** findings indicate that optimizing the quantity of F groups plays a crucial role in regulating the electron cloud distribution within the additive *** optimization fosters strong hydrogen bonds and coordination effects with FA+and uncoordinated Pb^(2+),ultimately enhancing crystal quality and device ***,1H,1H,2H-perfluoro-1-hexene(PF_(3))with the optimal number of F presents the most effective modulation effect.A PSC utilizing PF_(3)achieves an efficiency of 24.05%,and exhibits exceptional stability against humidity and thermal *** work sheds light on the importance of tailored structure designs in additives for achieving high-performance PSCs.

关键词： perovskite solar cells fluorine number additive structure crystallization regulation defect passivation

THE GREEN PLEDGE A forest guardian's Spring Festival vigil in the cold front

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Beijing Review 2024年第9期67卷 12-14页

作者： zhang shasha 不详

Chinese New Year is traditionally a time for family *** excitement leading up to the celebration focuses on taking a break from work to enjoy good times and good food with loved *** year,however,duty requires many to forego rest,relaxation and family reunion to keep the nation running during the *** essential workers staff hospitals,supermarkets,train stations and many other places to benefit holiday travelers and their *** Review pays tribute to three of them in the following pages.

关键词： traditionally guard union

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Milestones in Motion

Beijing Review 2024年第20期67卷 40-41页

作者： zhang shasha 不详

The 2024 Beijing International Automotive Exhibition,or Auto China 2024,a 10-day event that kicked off on April 25 after a fouryear hiatus,made a resounding *** social media by storm,its resurgence catapulted autorela... 详细信息

关键词： Miles lists storm

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Sustainable Synergy

Beijing Review 2024年第7期67卷 30-31页

作者： zhang shasha 不详

Green to Green,Green to Grow,Green to Great-these are the core tenets driving the sustainable development of JA Solar,a global photovoltaic(PV)power generation solution provider based in ***"3Gs"embody the company's commitment to promoting the circular economy,fostering green development and paving the way for a sustainable future.

关键词： Sustainable China. driving

The Power of Proactive Proposals

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Beijing Review 2024年第33期67卷 36-37页

作者： zhang shasha 不详

Returned overseas Chinese entrepreneur shares private economy ***1999,ShiQianpingfoundedJHF Technology Group ***.,a hi-tech industrial *** the 1990s,with limited technological support,Chinese brands predominantly occu... 详细信息

关键词： printer occupied overseas

Sowing,Imagination In the Sands

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Beijing Review 2024年第23期67卷 36-38页

作者： zhang shasha 不详

0n an early summer morning,amid the shimmering green ripples and lush reeds of a pond in Alaer,Xinjiang Uygur Autonomous Region,"Crayfish Commander"Ma Chunhua was busy harvesting her crayfish to sell for the day.

关键词： Commander harvesting Xinjiang

QUANTIFYING QUALITY--China's Q1 economic surge anchored in an increase in quality

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Beijing Review 2024年第17期67卷 12-16页

作者： zhang shasha 不详

Since the beginning of the year,China has seen economic progress both in terms of quantity and *** from the National Bureau of Statistics(NBS)showed on April 16 that China's GDP recorded a year-on-year growth of 5.3 percent in the first quarter(Q1)of *** national economy got off to a good start,with accumulating positive factors laying a solid foundation for full-year growth target[of around 5 percent],NBS Deputy Commissioner Sheng Laiyun told a press conference on the same day in Beijing.

关键词： economic surge quarter

A High-Flyer in the Making China's low-altitude economy is ready for takeoff

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Beijing Review 2024年第2期67卷 32-33页

作者： zhang shasha 不详

In Shenzhen,Guangdong Province,a city known for its tech innovation,residents have recently adopted helicopters as“air taxis"alongside buses,cabs and the *** board these air taxis,passengers are treated to panoramic ... 详细信息

关键词： residents altitude landscape

VOICES OF INFLUENCE At the Boao forum,participants seek opportunity amid uncertainty

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Beijing Review 2024年第28期67卷 12-15页

作者： zhang shasha 不详

Imagine that on a remote island,half of the residents are fishermen,while the other half are fruit *** these two groups choose not to trade with each other,the situation becomes precarious:The fish will quickly spoil,... 详细信息

关键词： residents island opportunity