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Semitransparent organic photovoltaics enabled by transparent p-type inorganic semiconductor and near-infrared acceptor

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Journal of Energy Chemistry 2024年第9期96卷 351-358页

作者： Xue Yan Jiayu Wang Wei He Top Archie Dela Peña Can Zhu Hailin Yu Yingyue Hu Cenqi Yan Shengqiang Ren Xingyu Chen Zhe Wang Jiaying Wu Mingjie Li Jianlong Xia Lei Meng Shirong Lu Dewei Zhao Mikhail Artemyev Yongfang Li Pei Cheng College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065SichuanChina Department of Applied Physics The Hong Kong Polytechnic UniversityKowloonHong Kong 999077China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China College of Materials Science and Engineering&Engineering Research Center of Alternative Energy Materials&Devices Ministry of EducationSichuan UniversityChengdu 610065SichuanChina Department of Material Science and Technology Taizhou UniversityTaizhou 318000ZhejiangChina Advanced Materials Thrust Function HubThe Hong Kong University of Science and Technology(Guangzhou)Guangzhou 511400GuangdongChina State Key Laboratory of Advanced Technology for Materials Science and Processing Center of Smart Materials and DevicesWuhan University of TechnologyWuhan 430070HubeiChina Department of Civil1nd Environmental Engineering The Hong Kong University of Science and TechnologyHong Kong 999077China Research Institute for Physical Chemical Problems Belarusian State UniversityMinsk 220006Belarus

Semitransparent organic photovoltaics(STOPVs)have gained wide attention owing to their promising applications in building-integrated photovoltaics,agrivoltaics,and floating *** semiconductors with high charge carrier mobility usually have planar and conjugated structures,thereby showing strong absorption in visible *** this work,a new concept of incorporating transparent inorganic semiconductors is proposed for high-performance ***(I)thiocyanate(CuSCN)is a visible-transparent inorganic semiconductor with an ionization potential of 5.45 eV and high hole *** transparency of CuSCN benefits high average visible transmittance(AVT)of *** energy levels of CuSCN as donor match those of near-infrared small molecule acceptor BTP-eC9,and the formed heterojunction exhibits an ability of exciton *** mobility of CuSCN contributes to a more favorable charge transport channel and suppresses charge *** control STOPVs based on PM6/BTP-eC9 exhibit an AVT of 19.0%with a power conversion efficiency(PCE)of 12.7%.Partial replacement of PM6 with CuSCN leads to a 63%increase in transmittance,resulting in a higher AVT of 30.9%and a comparable PCE of 10.8%.

关键词： Copper(I)thiocyanate Inorganic semiconductor Semitransparent Organic photovoltaics Charge dissociation

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Prepartition: Load Balancing Approach for Virtual Machine Reservations in a Cloud Data Center

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Journal of Computer Science & technology 2023年第4期38卷 773-792页

作者：田文洪徐敏贤周光耀吴逵须成忠 Rajkumar Buyya School of Information and Software Engineering University of Electronic Science and Technology of China Chengdu 610054China Yangtze Delta Region Institute(Huzhou) University of Electronic Science and Technology of ChinaHuzhou 313001China Institute of Advanced Computing and Digital Engineering Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China Department of Computer Science University of VictoriaVictoriaBCV8W 3P6Canada State Key Laboratory of Internet of Things for Smart City University of MacaoMacao 999078China School of Computing and Information Systems University of MelbourneMelbourne 3010Australia

Load balancing is vital for the efficient and long-term operation of cloud data *** virtualization,post(reactive)migration of virtual machines(VMs)after allocation is the traditional way for load balancing and consoli***,it is not easy for reactive migration to obtain predefined load balance objectives and it may interrupt services and bring ***,we provide a new approach,called Prepartition,for load *** partitions a VM request into a few sub-requests sequentially with start time,end time and capacity demands,and treats each sub-request as a regular VM *** this way,it can proactively set a bound for each VM request on each physical machine and makes the scheduler get ready before VM migration to obtain the predefined load balancing goal,which supports the resource allocation in a fine-grained *** with real-world trace and synthetic data show that our proposed approach with offline version(PrepartitionOff)scheduling has 10%–20%better performance than the existing load balancing baselines under several metrics,including average utilization,imbalance degree,makespan and Capacity_*** also extend Prepartition to online load *** results show that our proposed approach also outperforms state-of-the-art online algorithms.

关键词： cloud computing physical machine(PM) virtual machine(VM) reservation load balancing Prepartition

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Biologically inspired anthraquinone redox centers and biomass graphene for renewable colloidal gels toward ultrahigh-performance flexible micro-supercapacitors

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Journal of Materials Science & technology 2023年第20期151卷 178-189页

作者： Tiansheng Wang Shunyou Hu Yuanyuan Hu Dong Wu Hao Wu Jinxu Huang Hao Wang Weiwei Zhao Wen Yu Mi Wang Jie Xu Jiaheng Zhang School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Key Laboratory of Micro-systems and Micro-structures Manufacturing of Ministry of Education Harbin Institute of TechnologyHarbin 150001China National Innovation Center for Advanced Medical Devices Harbin Institute of TechnologyShenzhen 457001China Research Centre of Printed Flexible Electronics Harbin Institute of TechnologyShenzhen 518055China Sauvage Laboratory for Smart Materials School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)ShenzhenGuangdong 518055China Department of Chemistry University of IdahoMoscowIdaho 83844-2343USA

Biomass carbon and small redox biomolecules are attractive materials for green,sustainable energy storage devices owing to their environmentally friendly,low-cost,scalable,and novel ***,most devices manufactured using these materials have low specific capacitance,poor cycle stability,short lifetime,complexity,and low precision of device ***,we report the directed self-assembly of mononuclear anthraquinone(MAQ)derivatives and porous lignin-based graphene oxide(PLGO)into a renewable colloidal gel through noncovalent *** self-assembled gel electrode materials exhibited high capacitance(484.8 F g^(−1) at a current density of 1 A g^(−1))and could be further printed as flexible micro-supercapacitors(FMSCs)with arbitrary patterns and a relatively high resolution on specific *** FMSCs exhibited excellent areal capacitance(43.6 mF cm^(−2)),energy and power densities(6.1μWh cm^(−2) and 50μW cm^(−2),respectively),and cycle stability(>10,000 cycles).Furthermore,the printed FMSCs and integrated FMSC arrays exhibited remarkable flexibility while maintaining a stable *** proposed approach can be applied to other quinone biomolecules and biomass-based carbon *** study provides a basis for fabricating green and sustainable energy storage device architectures with high capacitance,long-term cycling,high scalability,and high precision.

关键词： Biomass carbon Mononuclear anthraquinone Noncovalent interactions Renewable colloidal gel Flexible micro-supercapacitors

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Zwitterionic polymers-armored amyloid-like protein surface combats thrombosis and biofouling

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Bioactive Materials 2024年第2期32卷 37-51页

作者： Xiaohui Mou Wan Miao Wentai Zhang Wenxuan Wang Qing Ma Zeyu Du Xin Li Nan Huang Zhilu Yang School of Materials Science and Engineering Key Lab of Advanced Technology of Materials of Education MinistrySouthwest Jiaotong UniversityChengdu610031China Dongguan Key Laboratory of Smart Biomaterials and Regenerative Medicine The Tenth Affiliated Hospital of Southern Medical UniversityDongguanGuangdong523000China Department of Cardiology Third People’s Hospital of Chengdu Affiliated to Southwest Jiaotong UniversityChengduSichuan 610072China

Proteins,cells and bacteria adhering to the surface of medical devices can lead to thrombosis and infection,resulting in significant clinical ***,we report a zwitterionic polymers-armored amyloid-like protein surface engineering strategy we called as“armored-tank”strategy for dual functionalization of medical ***“armored-tank”strategy is realized by decoration of partially conformational transformed LZM(PCTL)assembly through oxidant-mediated process,followed by armoring with super-hydrophilic poly-2-methacryloyloxyethyl phosphorylcholine(pMPC).The outer armor of the“armored-tank”shows potent and durable zone defense against fibrinogen,platelet and bacteria adhesion,leading to long-term antithrombogenic properties over 14 days in vivo without ***,the“fired”PCTL from“armored-tank”actively and effectively kills both Gram-positive and Gram-negative bacterial over 30 days as a supplement to the lacking bactericidal functions of passive outer ***,this“armored-tank”surface engineering strategy serves as a promising solution for preventing biofouling and thrombotic occlusion of medical devices.

关键词： Amyloid-like protein Antifouling Antithrombosis Super-Hydrophilicity Zwitterionic polymers

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Effect of Reduced Graphene Oxide / Calcium Carbonate Nanocomposite Reinforcement on the Thermos-Physical Properties of Pdms

SSRN

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SSRN 2024年

作者： Mandal, Swaroop Kumar Kumar, Rahul Rizwee, Mumtaz Kumar, Deepak Advanced Composite and Smart Material Laboratory Department of Mechanical Engineering National Institute of Technology Jamshedpur831014 India

Increasing the thermal stability and thermal conductivity of Polydimethylsiloxane (PDMS) is a crucial issue for thermal applications. This paper focuses on enhancing PDMS's thermal and structural properties by incorporating nanocomposite into the PDMS matrix. An investigation on the impact of rGO-CaCO3 nanocomposite on the thermal and structural properties of PDMS was performed by FESEM, XRD, TGA-DTA, and thermal analyzer test. It is observed that PDMS doped with rGO-CaCO3 nanocomposite shows better thermal stability and thermal conductivity. The enhancement of thermal and structural properties was ascribed to the surface modification of PDMS, which can augment the interfacial qualities of rGO-CaCO3 nanocomposite fillers and PDMS—using nanocomposite results in a substantial enhancement of approximately 2.6-fold in thermal conductivity. In contrast, the thermal diffusivity is enhanced from 0.13 mm2/s to 0.366 mm2/s. © 2024, The Authors. All rights reserved.

关键词： Thermodynamic stability

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Promoting catalysis activity with optimizable self-generated Co-Fe alloy nanoparticles for efficient CO_(2)electrolysis performance upgrade

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Nano Research 2023年第8期16卷 10992-10999页

作者： Kun Zhang Dong Zhang Yao Wang Yihang Li Cong Ren Mingyue Ding Tong Liu Key Laboratory of Hydraulic Machinery Transients(Wuhan University) Ministry of EducationSchool of Power and Mechanical EngineeringThe Institute of Technological SciencesWuhan UniversityWuhan 430072China Key Laboratory of Green Chemical Process of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical TechnologySchool of Chemical Engineering and PharmacyWuhan Institute of TechnologyWuhan 430205China Interdisciplinary Research Center of Smart Sensors Academy of Advanced Interdisciplinary ResearchXidian UniversityXi’an 710071China Department of Applied Chemistry School of Advanced Materials and NanotechnologyXidian UniversityXi’an 710071China

Stable and flexible metal nanoparticles(NPs)with regeneration ability are critical for long-term operation of solid oxide electrolysis cells(SOECs).Herein,a novel perovskite electrode with stoichiometric Pr_(0.4)Sr_(0.6)Co_(0.125)Fe_(0.75)Mo_(0.125)O_(3)−δ(PSFCM)is synthesized and studied,which undergoes multiple redox cycles to validate its structural stability and NPs *** Co-Fe alloy has exsolved from the parent bulk under reducing atmosphere,and is capable of reincorporation into the parent oxide after re-oxidation *** the redox process,we successfully manipulate the size and population density of the exsolved NPs,and find that the average particle size significantly reduces but the population density increases *** electrode polarization resistance of the symmetric cell remains stable for 450 h,and even activates after the redox cycling,which may be attributed to the higher quantity and larger specific surface area of the regenerated Co-Fe alloy ***,the electrochemical performance towards carbon dioxide reduction reaction(CO_(2)RR)is evaluated,and the CO_(2)electrolyzer consisting of CoFe@PSCFM-Ce_(0.8)Sm_(0.2)O_(1.9)(SDC)dual-phase electrode exhibits an excellent current density of 1.42 A·cm^(−2)at 1.6 V,which reaches 1.7 times higher than 0.83 A·cm^(−2)for the pristine PSCFM ***,with this flexible and reversible high-performance SOEC cathode material,new options and perspectives are provided for the efficient and durable CO_(2)electrolysis.

关键词： redox stability in situ exsolution regeneration carbon dioxide reduction reaction perovskite

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Highly robust soft-rigid connections via mechanical interlocking for assembling ultra-stretchable displays

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npj Flexible Electronics 2024年第1期8卷 387-396页

作者： Lixue Tang Huayi Wang Jifeng Ren Xingyu Jiang Beijing Key Laboratory of Fundamental Research on Biomechanics in Clinical Application School of Biomedical EngineeringCapital Medical UniversityNo.10 XitoutiaoYou An Men Wai100069 BeijingChina Shenzhen Key Laboratory of Smart Healthcare Engineering Guangdong Provincial Key Laboratory of Advanced BiomaterialsDepartment of Biomedical EngineeringSouthern University of Science and TechnologyNo.1088Xueyuan Rd.Nanshan District518055 ShenzhenGuangdongP.R.China

Stretchable electronic circuits can seamlessly conform to irregular and dynamic surfaces with high ***,current stretchable configurations typically have limited stretchability due to the lack of robust connections between soft interconnects and rigid ***,we printed highly stretchable metal–polymer conductors on thermoplastic elastomers as *** developed electronic vests with porous surfaces for rigid electronics and introduced polyester hot-melt adhesives to strengthen connections between soft interconnects and rigid *** thermal bonding,the adhesive penetrates the porous surface of electronic vests,creating a mechanical interlock and providing an adhesion force of 8.34 N/cm for the connection(3×higher than conductive adhesives).Thus,rigid electronics of different sizes and different pin counts can form strong connections to soft interconnects,achieving a maximum strain tolerance of~700%(10×higher than conductive adhesives).We achieved highly integrated ultra-stretchable displays that can withstand stretching up to 220%without dead pixels.

关键词： rigid stretching polyester

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Mn single-atoms decorated CNT electrodes for high-performance supercapacitors

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Nano Research 2024年第5期17卷 4039-4046页

作者： Qian Rong Chao Yuwen Yingkai Liu Yuanrong Liu Chunyang Wang Yang Wang Ding Zhang Zhen Wen Yunnan Key Laboratory of Opto-Electronic Information Technology Institute of Physics and Electronic InformationYunnan Normal UniversityKunming 650500China Faculty of Metallurgical and Energy Engineering Kunming University of Science and TechnologyKunming 650093China Department of Physics and Astronomy University of CaliforniaIrvineCA 92697USA School of Materials Science and Engineering National Institute for Advanced MaterialsSmart Sensing Interdisciplinary Science CenterNankai UniversityTianjin 300350China Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices Institute of Functional Nano and Soft Materials(FUNSOM)Soochow UniversitySuzhou 215123China

Developing highly robust and efficient electrode materials is of critical importance to promoting the energy density of current supercapacitors for ***,we report an efficient catalyst with monodispersed Mn single-atoms embedded in carbon nanotubes(Mn-CNTs)for enhancing the electrode performance of supercapacitors.A high specific capacitance(1523.6 F·g^(-1) at 1.0 A·g^(-1))can be achieved,which is about twice as high as the specific capacitance of the electrode material without the introduction of Mn ***,the asymmetric electrochemical capacitor created with Mn-CNT and activated carbon exhibits a high energy density of 180.8 Wh·kg^(-1) at a power density of 1.4 kW·kg^(-1),much higher than most reported *** study shows that the integration of Mn atoms into the CNT can enhance the charge transport capacity and the number of polar active sites of Mn-CNT and then facilitate chemical interactions between Mn-CNT and OH-.This work provides a novel strategy to enable high-energy storage in supercapacitors by introducing single-atoms into carbon nanotubes to improve electrodes’energy density and cycle life.

关键词： carbon nanotube(CNT) supercapacitor single-atoms power density energy density

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Exploiting the donor-acceptor-additive interaction’s morphological effect on the performance of organic solar cells

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Aggregate 2024年第2期5卷 316-327页

作者： Lu Chen Ruijie Ma Jicheng Yi Top Archie Dela Peña Hongxiang Li Qi Wei Cenqi Yan Jiaying Wu Mingjie Li Pei Cheng He Yan Guangye Zhang Gang Li College of New Materials and New Energies Shenzhen Technology UniversityShenzhenChina Department of Chemistry and Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction The Hong Kong University of Science and TechnologyHong KongChina Department of Electrical and Electronic Engineering Research Institute for Smart Energy(RISE)Photonic Research Institute(PRI)The Hong Kong Polytechnic UniversityHong KongChina Department of Applied Physics The Hong Kong Polytechnic UniversityHong KongChina The Hong Kong University of Science and Technology Function HubAdvanced Materials ThrustGuangzhouP.R.China College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengduChina

Organic solar cells(OSCs)have demonstrated over 19%power conversion efficiency(PCE)with the help of material innovation and device ***-working with newly designed materials,traditional solvent additives,1-chloronaphthalene(CN),and 1,8-diodooctane(DIO)are still powerful in morphology modulation towards satisfying ***,we chose recently reported high-performance polymer donors(PM6&D18-Fu)and small molecular acceptors(Y6&L8-BO)as active layer materials and processed them by different conditions(CN or DIO or none).Based on corresponding 12 groups of device results,and their film morphology characterizations(both ex-situ and in-situ ones),the property-performance relationships are revealed case by *** is thereby supposed to be taken as a successful attempt to demonstrate the importance and complexity of donor-acceptoradditive interaction,since the device performance and physics analyses are also tightly combined with morphology ***,ternary blend construction for PCE improvement provides an approaching 19%level and showcases the potential of understanding-guided-optimization(UGO)in the future of OSCs.

关键词： material combinations morphology modulation organic solar cells power conversion efficiency solvent additives

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Atomically dispersed indium and cerium sites for selectively electroreduction of CO_(2)to formate

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Nano Research 2023年第7期16卷 8757-8764页

作者： Zhong Liang Lianpeng Song Mingzi Sun Bolong Huang Yaping Du Tianjin Key Lab for Rare Earth Materials and Applications Center for Rare Earth and Inorganic Functional MaterialsHaihe Laboratory of Sustainable Chemical TransformationsSmart Sensing Interdisciplinary Science CenterSchool of Materials Science and EngineeringNational Institute for Advanced MaterialsNankai UniversityTianjin 300350China Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic UniversityHong Kong 999077China

Currently,single-atom combo catalysts(SACCs)for carbon dioxide reduction reaction(CO_(2)RR)to the formation of HCOOH are still very limited,especially the lanthanide-based *** this work,the novel SACCs with atomically dispersed In and Ce active sites were successfully prepared on the nitrogen-doped carbon matrix(InCe/CN).Both aberration-corrected high-angle annular dark-field scanning transmission electron microscopy(AC-HAADF-STEM)images and the extended X-ray absorption fine structure(EXAFS)spectra proved the well-isolated In and Ce *** as-prepared InCe/CN shows a high Faradaic efficiency(FE)(77%)and current density of HCOOH formation(j_(HCOOH))at-1.35 V *** hydrogen electrode(RHE),much higher than the single atom *** calculations have indicated that the introduced Ce single atom sites not only significantly promote electron transfer but also optimize the In-5p orbitals towards higher selectivity towards the HCOOH *** work innovatively extends the design of SACCs towards the main group and Ln metals for more applications.

关键词： single-atom combo catalysts carbon dioxide reduction formate generation multi-active sites rare earth

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