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In situ seed layer bandgap engineering leading to the conduction band offset reversion and efficient Sb2Se3 solar cells with high open-circuit voltage

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Journal of Energy Chemistry 2025年第2期101卷 201-212页

作者： Yanting Jiang Weiyu Wang Zhirong Chen Zhenyu Fang Qiqiang Zhu Qiao Zheng Jionghua Wu Hui Deng Weihuang Wang Shuying Cheng Fuzhou University Institute of Micronano Devices & Solar Cells College of Physics & Information Engineering Jiangsu collaborative innovation center for Photovoltaic Science and Engineering

Sb2Se3solar cells have achieved a power conversion efficiency（PCE） of over 10%.However,the serious open-circuit voltage deficit(VOC-deificit),induced by the hard-to-control crystal orientation and heterojunction interface reaction,limits the PCE of vapor transport deposition（VTD） processed Sb2Se3solar *** overcome the VOC-deficit problem of VTD processed Sb2Se3solar cells,herein,an in-situ bandgap regulation strategy is innovatively proposed to prepare a wide band gap Sb2（S,Se）3seed layer（WBSL） at CdS/Sb2Se3heterojunction interface to improve the PCE of Sb2Se3solar *** analysis results show that the introduced Sb2（S,Se）3seed layer can enhance the [001] orientation of Sb2Se3thin films,broaden the band gap of heterojunction interface,and realize a "Spike-like" conduction band alignment withΔEc=0.11 *** addition,thanks to the suppressed CdS/Sb2Se3interface reaction after WBSL application,the depletion region width of Sb2Se3solar cells is widened,and the quality of CdS/Sb2Se3interface and the carrier transporting performance of Sb2Se3solar cells are significantly improved as ***,the harmful Se vacancy defects near the front interface of Sb2Se3solar cells can be greatly diminished by ***,the PCE of Sb2Se3solar cells is improved from 7.0% to 7.6%;meanwhile the VOCis increased to 466 mV which is the highest value for the VTD derived Sb2Se3solar *** work will provide a valuable reference for the interface and orientation regulation of antimony-based chalcogenide solar cells.

关键词： Band gap alignment Carrier transport Crystal orientation Open circuit voltage deficit Seed-layer

A mitochondria targeting Ir(Ⅲ)complex triggers ferroptosis and autophagy for cancer therapy:A case of aggregation enhanced PDT strategy for metal complexes

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Chinese Chemical Letters 2025年第1期36卷 374-380页

作者： Panpan Wang Hongbao Fang Mengmeng Wang Guandong Zhang Na Xu Yan Su Hongke Liu Zhi Su Jiangsu collaborative innovation center of Biomedical Functional Materials College of Chemistry and Materials ScienceNanjing Normal UniversityNanjing 210023China

Metal complexes hold significant promise in tumor diagnosis and ***,their potential applications in photodynamic therapy(PDT)are hindered by issues such as poor photostability,low yield of reactive oxygen species(ROS),and aggregation-induced ROS *** address these challenges,we present a molecular self-assembly strategy utilizing aggregation-induced emission(AIE)conjugates for metal *** a proof of concept,we synthesized a mitochondrial-targeting cyclometalated Ir(Ⅲ)photosensitizer *** approach significantly enhances the photodynamic effect while mitigating the dark toxicity associated with AIE ***-TPE readily self-assembles into nanoaggregates in aqueous solution,leading to a significant production of ROS upon light *** Ir-TPE triggers multiple modes of death by excessively accumulating ROS in the mitochondria,resulting in mitochondrial DNA *** damage can lead to ferroptosis and autophagy,two forms of cell death that are highly cytotoxic to cancer *** aggregation-enhanced photodynamic effect of Ir-TPE significantly enhances the production of ROS,leading to a more pronounced cytotoxic *** vitro and in vivo experiments demonstrate this aggregation-enhanced PDT approach achieves effective in situ tumor *** study not only addresses the limitations of metal complexes in terms of low ROS production due to aggregation but also highlights the potential of this strategy for enhancing ROS production in PDT.

关键词： Metal complex AIEgens Mitochondria targeting Enhanced photodynamic therapy Anticancer agent

Polarization structure transition of C-point singularities upon reflection

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Science China(Physics,Mechanics & Astronomy) 2025年第04期Mechanics & Astronomy) .卷 105-115页

作者： Weiming Zhen Zhi-Cheng Ren Xi-Lin Wang Jianping Ding Hui-Tian Wang National Laboratory of Solid State Microstructures and School of Physics Nanjing University collaborative innovation center of Advanced Microstructures collaborative innovation center of Solid-State Lighting and Energy-Saving Electronics

This paper provides a comprehensive study of the polarization transition of reflected C-point singularities. The reflection of star-and lemon-type C-point paraxial vector beams at an air-dielectric interface is investigated. For small oblique incidences, a topological phase transition is observed exclusively in spin-maintained modes, manifesting as a shift from a vortex phase to a spin phase. Notably, as the incident angle ranges from 0 to 90 degrees, another topological phase transition occurs, the total spin components of the reflected field undergoing an interchange of topological charges(TCs), resulting in a type transition of the C-point from the star(lemon)-type to the lemon(star)-type. Furthermore, the concurrence of the C-point beam throughout the reflection process can be modulated by the incident angle, spanning almost the entire spectrum from 0 to 1. The longitudinal and transverse displacements of each spin component as well as the overall beam shifts of the reflected beam are further analyzed, revealing their dependence on the incident beam's TC combination. These findings offer novel physical insights into polarization singularity-matter interactions, holding promise for advancing research in singular optics and its applications.

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Current status of drug therapy for chronic hepatitis B

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World Journal of Gastroenterology 2025年第2期31卷 1-12页

作者： Chuang Jiang Zhi-Hong Zhang Jia-Xin Li Division of Liver Surgery Department of General Surgery and Laboratory of Liver Surgeryand State Key Laboratory of Biotherapy and Collaborative Innovation Center of BiotherapyWest China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Department of General Surgery Dafang County People's HospitalBijie 551600Guizhou ProvinceChina

In this editorial,we comment on the article by Meng et *** hepatitis B(CHB)is a significant global health problem,particularly in developing *** B virus(HBV)infection is one of the most important risk factors for cirrhosis and hepatocellular *** and treatment of HBV are key measures to reduce *** present,drug therapy can effectively control virus replication and slow disease progression,but completely eliminating the virus remains a ***-HBV treatment is a long-term process,and there are many kinds of antiviral drugs with different mechanisms of action,it is essential to evaluate the safety and efficacy of these drugs to reduce side effects and improve patients’*** will summarize the current status of CHB drug treatment,hoping to provide a reference for the selection of clinical antiviral drugs.

关键词： Chronic hepatitis B Hepatitis B virus Anti virus Drug treatment Therapy

Rapid and scalable preparation of highly quaternized polymer networks to achieve efficient simultaneous adsorption of iodide and pertechnetate

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Science China Chemistry 2025年第1期68卷 337-349页

作者： Meiyun Xu Song Gu Fulong Chen Zhe Zhao Peng Liu Daoben Hua State Key Laboratory of Radiation Medicine and Protection School of Radiological and Interdisciplinary Sciences(RAD-X)Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123China

The efficient separation of fission products,such as TcO_(4)^(-)and I^(-),holds strategic significance for the management of radioactive wastes and environmental *** this study,we propose an ultrafast strategy for scalable preparation of a highly quaternized organic network to facilitate efficient and synchronous separation of iodide and *** network can be prepared within a few minutes at room temperature,using polyethylenimine and 1,2,4,5-tetrakis(bromomethyl)benzene as building *** chlorine replacement,the network,abundantly decorated with quaternary ammonium groups(Cl@QPN),exhibits an ultrahigh positive charge density of 7.6 mmol/*** enables the rapid and efficient enrichment of target anions through strong electrostatic Coulomb *** a result,Cl@QPN exhibits significantly higher adsorption rate constants of 0.830 g/(mg min)for ReO_(4)^(-)(a nonradioactive surrogate of TcO_(4)^(-))and 0.677 g/(mg min)for I-compared to other ***,it possesses high adsorption capacities,reaching 1,681 mg/g for ReO_(4)^(-)and 917.4 mg/g for I-.Cl@QPN also demonstrates good selectivity towards target ions and shows efficient adsorption for^(99)TcO_(4)^(-).Additionally,Cl@QPN exhibits high dynamic processing capacities,handling up to 3,100 and 7,400 kg of simulated streams per kilogram of material for I-and ReO_(4)^(-),respectively.

关键词： quaternized polymer networks adsorption pertechnetate iodide liquid radioactive streams

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Timing of biomarker changes preceding Alzheimer's disease:for diagnosis,treatment or prevention?

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Science China(Life Sciences) 2025年第2期68卷 575-577页

作者： Meina Quan innovation center for Neurological Disorders and Department of Neurology Xuanwu HospitalCapital Medical UniversityBeijing 100053China National Medical center for Neurological Diseases and National Clinical Research center for Geriatric Diseases Beijing 100053China center of Alzheimer’s Disease Beijing Institute of Brain DisordersCollaborative Innovation Center for Brain DisordersBeijing 100053China

The pathophysiological and behavioural features of Alzheimer’s disease(AD)have been extensively investigated in transgenic mouse models,including the temporal sequence of each pathophysiological change and behavioural abnormality,a summary of which was recently presented by our team in this Journal(Li et al.,2023).Nevertheless,studying such features and timings directly in human patients before symptoms occur is challenging.

关键词： prevention Alzheimer diagnosis

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Potential dependence in electrocatalysis:a theoretical perspective

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Science China Chemistry 2025年第1期68卷 21-25页

作者： Leyu Liu Zhaoming Xia Zeyu Wang Yinjuan Chen Hai Xiao Department of Chemistry Tsinghua UniversityBeijing 100084China Fundamental Science center of Rare Earths Ganjiang Innovation AcademyChinese Academy of SciencesGanzhou 341119China Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation CenterChangzhou UniversityChangzhou 213164China

Electrocatalysis is a key technology for the new energy era and sustainable development,serving as the interface for interconversion of electrical and chemical energies,which spans a wide spectrum of applications in sustainable energy and environmental *** reactions including electrochemical CO_(2)reduction reaction(eCO_(2)RR),hydrogen evolution reaction(HER),and oxygen evolution/reduction reactions(OER/ORR),hold essential promise for renewable energy technologies as well as complement the biogeochemical carbon and oxygen cycles.

关键词： spectrum interface Electrocatalysis

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Influence mechanism of the flow of high-skilled talents on technological evolution in emerging countries

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Journal of Geographical Sciences 2025年第02期35卷 409-431页

作者： JIN Wenwan ZHU Shengjun LIN Xiongbin Department of Geography and Spatial Information Technology Zhejiang Collaborative Innovation Center for Land and Marine Spatial Utilization and Governance Research Ningbo University College of Urban and Environmental Sciences Peking University

Globalization has resulted in a notable rise in the flow of high-skilled talent from emerging countries to developed nations. Current research on transnational talent flow mainly focuses on the destination countries, with less attention given to the perspective of the sending countries, particularly lacking a dynamic discussion on its impact on technological evolution in the origin countries. Based on the OECD REGPAT database, this paper aims to explore how talent groups migrating to developed countries facilitate the return of knowledge and technology to emerging countries and achieve breakthroughs in their technological evolution paths, while further discussing the potential mechanisms involved. The findings of this paper are as follows:(1) The technological development of emerging countries is a path-dependent process, where countries often branch into new technologies related to their preexisting knowledge base. Consequently, knowledge feedback from high-skilled talents increases the likelihood of sending countries developing unrelated technologies.(2) The mobility of talents across borders fosters more international collaborations and citations for patents that are unrelated to the local knowledge base, thus enriching the technological paths of sending countries.(3) The mobility of high-skilled talents primarily affects complex technologies, which have significant economic effects that encourage imitation by other ***, the effect on novel technologies is less significant due to their strong geographical stickiness. In general, this paper addresses the gaps in existing research on talent outflow and the technological evolution of origin countries, providing empirical evidence for the positive role of transnational talent mobility in the technological catch-up of emerging ***, it offers recommendations for talent export, import, and innovation policy formulation in these countries.

关键词： emerging countries mechanism research path-breaking talent flow technological evolution

Phase transition thermosensitive photocatalytic hydrogel for enhanced uranium extraction

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Science Bulletin 2025年第1期70卷 4-6页

作者： Jiacheng Zhang Yihui Yuan Ning Wang State Key Laboratory of Marine Resource Utilization in South China Sea Collaborative Innovation Center of Marine Science and TechnologyHainan UniversityHaikou 570228China

As a clean energy source,nuclear energy is crucial for realizing carbon neutralization and the construction of many nuclear plants is underway[1].According to an estimate by the International Atomic Energy Agency,the global nuclear energy production is expected to increase by 56%between 2015 and 2030[2].However,with current consumption rate of uranium resources,terrestrial uranium reserves will be depleted within approximately 80 years[3,4].

关键词： approximate transition hydrogel