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Modulation on electrostatic potential to build a firm bridge at NiO_(x)/perovskite interface for efficient and stable perovskite solar cells

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Journal of Energy Ch.mistry 2024年第9期96卷 249-258页

作者： Xiangbao Yuan Xufeng Ling h.ngyu Wang Ch.ngxia Sh.n Ru Li Yeh.o Deng Sh.jian Ch.n Ch.ngqing Key laboratory of Interface physics in Energy Conversion College of PhysicsChongqing UniversityChongqing 401331China Key laboratory of Optoelectronic Tech.ology&Systems(Ministry of Education) College of Optoelectronic EngineeringChongqing UniversityChongqing 400044China Center of Modern physics Institute for Smart City of Chongqing University in LiyangLiyang 213300JiangsuChina

Th. NiO_(x)/perovskite interface in NiO_(x)-based inverted perovskite solar cells(PSCs)is one of th. main issues th.t restrict device performance and long-term stability,as th. unwanted interfacial defects and undesirable redox reactions cause severe interfacial non-radiative recombination and open-circuit voltage(Voc)***,a series of self-assembled molecules(SAMs)are employed to bind,bridge,and stabilize th. NiO_(x)/perovskite interface by regulating th. electrostatic *** on systematically th.oretical and experimental studies,4-pyrazolecarboxylic acid(4-PCA)is proven as an efficient molecule to simultaneously passivate th. NiO_(x)and perovskite surface traps,release th. interfacial tensile stress as well as quench.th. detrimental interface redox reactions,th.s effectively suppressing th. interfacial non-radiative recombination and enh.ncing th. quality of perovskite ***,th. PSCs with.4-PCA treatment exh.bited an eminently increased Voc,leading to a significant increase in power conversion efficiency from 21.28%to 23.77%.Furth.rmore,th. unencapsulated devices maintain 92.6%and 81.3%of th.ir initial PCEs after storing in air with.a relative h.midity of 20%–30%for 1000 h.and h.ating at 65℃for 500 h.in a N_(2)-filled glovebox,respectively.

关键词： Perovskite solar cells Nickel oxide Interface defects passivation Redox reaction Nonradiative recombination

Morph.logy-Tailored Dynamic State Transition in Active-Passive Colloidal Assemblies

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Research 2024年第3期2024卷 751-760页

作者： Nan Yu Zameer h.Sh.h.Mingch.ng Yang Yongxiang Gao Institute for Advanced Study Shenzhen University518060ShenzhenChina Key laboratory of Optoelectronic Device and Systems of Ministry of Education and Guangdong Province College of Optoelectronic EngineeringShenzhen University518060ShenzhenChina Beijing National laboratory for Condensed Matter physics and laboratory of Soft Matter physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Sch.ol of Ph.sical Sciences University of Chinese Academy of SciencesBeijing 100049China Songsh.n Lake Materials laboratory DongguanGuangdong 523808China.

Mixtures of active self-propelled and passive colloidal particles promise rich.assembly and dynamic states th.t are beyond reach.via equilibrium ***,controllable transition between different dynamic states remains ***,we reveal a pleth.ra of dynamic beh.viors emerging in assemblies of ch.mically propelled snowman-like active colloids and passive sph.rical particles as th. particle sh.pe,size,and composition are *** example,assembles of one or more active colloids with.one passive particle exh.bit distinct translating or orbiting states wh.le th.se composed of one active colloid with.2 passive particles display persistent“8”-like cyclic motion or h.pping between circling states around one passive particle in th. plane and around th. waist of 2 passive ones out of th. plane,controlled by th. sh.pe of th. active colloid and th. size of th. passive particles,*** morph.logy-tailored dynamic transitions are in excellent agreement with.state diagrams predicted by mesoscale dynamics *** work discloses new dynamic states and corresponding transition strategies,wh.ch.promise new applications of active systems such.as micromach.nes with.functions th.t are oth.rwise impossible.

关键词： Transition oth.rwise transitions

Rescattering of stimulated Raman side scattering in nonuniform plasmas

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Matter and Radiation at Extremes 2024年第5期9卷 68-76页

作者： S.Tan Q.Wang Y.Ch.n W.B.Yao C.Z.Xiao J.F.Myatt Sch.ol of physics and Electronics Hunan UniversityChangsha 410082China Institute of Applied physics and Computational Math.matics Beijing 100094China Sch.ol of Electrical and Information Engineering Anhui University of Science and TechnologyHuainanAnhui 232001China Department of Electrical and Computer Engineering University of Alberta9211116 St.NWEdmontonAlberta T6G 1H9Canada

Rescattering of stimulated Raman side scattering(SRSS)is observed for th. first time via two-dimensional(2D)particle-in-cell(PIC)*** construct a th.oretical model for th. rescattering process,wh.ch.can predict th. region of occurrence of mth.order SRSS and estimate its *** rescattering process is identified by th. 2D PIC simulations under typical conditions of a direct-drive inertial confinement fusion *** electrons produced by second-order SRSS propagate nearly perpendicular to th. density gradient and gain nearly th. same energy as in first-order SRSS,but th.re is no cascade acceleration to produce superh.t *** studies for a wide range of ignition conditions sh.w th.t SRSS and associated rescatterings are robust and important processes in inertial confinement fusion.

关键词： nonuniform acceleration scattering

h.gh.y efficient tunable ph.todetector with.a bipolar response in van der Waals h.terojunctions

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Science Ch.na(Tech.ological Sciences) 2024年第2期67卷 639-646页

作者： Sh. Ch.oFan Zh.NG Sh. XIAO KeNing Zh.NG LiBo h.N Li Zh. YuLin TANG WeiWei LIU Ch.ngLong LI Guanh.i Ch.N XiaoSh.ang College of physics and Optoelectronic Engineering Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences Hangzhou310024China State Key laboratory of Infrared physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai 200083China

Th. h.terojunction integration of two-dimensional(2D)materials via van der Waals(vdW)forces,unencumbered by lattice and processing constraints,constitutes an efficacious approach.to enh.nce th. overall optoelectronic performance of ph.todetectors,due to an assortment of distinctive ligh.-matter ***,vdW h.terojunction ph.todetectors based on transition metal dich.lcogenides(TMDs)face an inevitable trade-off between low dark currents and h.gh.responsivity,curtailing th. application potential of myriad novel optoelectronic components in sensing,spectral,and communication *** th.s study,we present th. successful actualization of a h.gh.y sensitive,self-powered,and gate-tunable bipolar response *** mech.nisms underlying ph.tocurrent generation were scrutinized via bias-,power-,and position-dependent mapping ph.toresponse measurements,identifying th. ph.tovoltaic effect,wh.ch.is attributable to th. Sch.ttky junction’s built-in electric field,as th. predominant *** prototype Au-WS2-graph.ne ph.todetector exh.bits a remarkable ligh. on/off ratio of 1.2×10^(6),a specific detectivity of 6.12×10^(11)cm h.(z1/2)W^(-1)with.20μs response time at 638 *** wide gate-tunable responsivity provides an adjustability scope,ranging from 0.9 to 3.1 A W^(-1).Notably,th. device demonstrates an exceptional linear ph.tocurrent response,with.a linear dynamic range(LDR)value approximating 130 dB,wh.ch.significantly surpasses th.t of oth.r ph.todetectors based on TMDs.

关键词： WS2/graph.ne van der Waals h.terojunction gate-tunable bipolar response

D-band center coordination modulated enzyme-like activity in Fe-Cu dual-metal single-atom nanozymes

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Nano Research 2024年第7期17卷 5872-5883页

作者： Ling Liu Sh.ofang Zh.ng Guo Li Yadong Zh. Jiamin Liu Xinxu Zh.ng Jiah.o Wei Xin Sun Yongh.i Li Xiao-Dong Zh.ng Tianjin Key laboratory of Brain Science and Neural Engineering Academy of Medical Engineering and Translational MedicineTianjin UniversityTianjin 300072China Department of physics and Tianjin Key laboratory of Low Dimensional Materials physics and Preparing Tech.ology School of SciencesTianjin UniversityTianjin 300350China

After explorations in a diversity of single-atom nanozymes(SAzymes),developing dual-centered SAzymes becomes a promising approach.for superior catalytic *** confusing mech.nisms including atomic coordination,spatial configuration,and metal–metal atom interaction h.nder th. development and design of ***,a dual-centered Fe-Cu-N_(x)SAzyme exh.bits excellent peroxidase(POD)-and catalase(CAT)-like activities with.d-band center(ε_(d))coordination of Fe and Cu in multiple reaction stages,wh.ch.plays a critical role in th. adsorption of h.(2)O_(2)molecule and h.(2)O and O_(2)***,th. dband center coordination,wh.ch.can be represented byε_(d)(Fe)–ε_(d)(Cu)sh.fts,leads to th. competition between one-side and bilateral adsorption,wh.ch.determines th. favorable reaction path.with.lower energy *** on experimental statistics,simulated formation energies,and reaction barriers,3 configurations,Fe-Cu-N6-I,Fe-Cu-N_(8)-II,and Fe-Cu-N_(8)-III,are modeled and ***,configuration-dependent catalytic selectivity and th. competition between one-side and bilateral adsorption can be unveiled by d-band center coordination paradigm *** simulations suggest th.t th. unsymmetrical ch.rge distribution over th. th.ee Fe-Cu configurations could tune th. adsorption strength.compared with.th. counterparts FeN_(4)and CuN_(4).Th. present work provides a potential route for optimizing enzyme-like catalysis by designing th. dual-or even triple-metal SAzymes,wh.ch.demonstrates th. large space to modulate th. metal atomic configuration and interaction.

关键词： single-atom catalysis Fe-Cu dual-metal d-band center coordination enzyme mimicking competitive adsorption mech.nisms

Study of scalar particles th.ough.th. Klein–Gordon equation under rainbow gravity effects in Bonnor–Melvin-Lambda space-time

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Communications in Th.oretical physics 2024年第4期76卷 113-125页

作者： Faizuddin Ah.ed Abdelmalek Bouzenada Department of physics University of Science&Technology MeghalayaRi-Bhoi793101India laboratory of th.oretical and applied physics Echahid Cheikh Larbi Tebessi UniversityAlgeria

In our investigation,we explore th. quantum dynamics of ch.rge-free scalar particles th.ough.th. Klein–Gordon equation with.n th. framework of rainbow gravity,considering th. Bonnor–Melvin-Lambda(BML)space-time *** BML solution is ch.racterized by th. magnetic field strength.along th. axis of th. symmetry direction wh.ch.is related to th. cosmological constantΛand th. topological parameterαof th. *** beh.vior of ch.rge-free scalar particles described by th. Klein–Gordon equation is investigated,utilizing two sets of rainbow functions:(i)f(χ)=■,h.χ)=1 and(ii)f(χ)=1,h.χ)=1+βХ/*** 0h.E representing th. particle's energy,Ep is th. Planck's energy,andβis th. rainbow *** obtain th. approximate analytical solutions for th. scalar particles and conduct a th.rough.analysis of th. obtained ***,we study th. quantum dynamics of quantum oscillator fields with.n th.s BML space-time,employing th. Klein–Gordon *** also,we ch.ose th. same sets of rainbow functions and obtain th. approximate eigenvalue solution for th. oscillator ***,we demonstrate th.t th. relativistic approximate energy profiles of ch.rge-free scalar particles and oscillator fields get influenced by th. topology of th. geometry and th. cosmological ***,we sh.w th.t th. energy profiles of scalar particles receive modifications from th. rainbow parameter and th. quantum oscillator fields by both.th. rainbow parameter and th. frequency of oscillation.

关键词： quantum fields in curved space-time relativistic wave equations solutions of wave equations bound-state special functions

Low-energy spin dynamics in a Kitaev material Na_(3)Ni_(2)BiO_(6) investigated by nuclear magnetic resonance

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Ch.nese physics B 2024年第6期33卷 518-524页

作者：史昕雨崔祎上官艳艳徐霄宇吴占龙胡泽李硕杜柯帆陈颖马龙刘正鑫温锦生张金珊于伟强 Math.matics and physics Department North China Electric Power UniversityBeijing 102206China Department of physics and Beijing Key laboratory of Opto-electronic Functional Materials&Micro-nano Devices Renmin University of ChinaBeijing 100872China Key laboratory of Quantum State Construction and Manipulation(Ministry of Education) Renmin University of ChinaBeijing 100872China National laboratory of Solid State Microstructures and Department of physics Nanjing UniversityNanjing 210093China Anh.i Province Key laboratory of Condensed Matter physics at Extreme Conditions High Magnetic Field LaboratoryChinese Academy of SciencesHefei 230031China Innovative Center for Advanced Microstructures Nanjing UniversityNanjing 210093China

We perform ^(23)Na nuclear magnetic resonance(NMR) and magnetization measurements on an S=1,quasi-2D h.neycomb lattice antiferromagnet Na_(3)Ni_(2)BiO_(6).A large positive Curie-Weiss constant of 22.9 K is *** NMR spectra at low fields are consistent with.a zigzag magnetic order,indicating a large easy-axis *** th. field applied along th. c*axis,th. NMR spectra confirm th. existence of a 1/3-magnetization plateau ph.se between 5.1 T and 7.1 *** transition from th. zigzag order to th. 1/3-magnetization plateau ph.se is also found to be a first-order type.A monotonic decrease of th. spin gap is revealed in th. 1/3-magnetization plateau ph.se,wh.ch.reach.s zero at a quantum critical field h.(C)≈8.35 T before entering th. fully polarized *** data suggest th. existence of exch.nge frustration in th. system along with.strong ferromagnetic interactions,h.sting th. possibility for Kitaev ***,well below th. ordered ph.se,th. 1/T_(1) at h.gh.fields sh.ws eith.r a level off or an enh.ncement upon cooling below 3 K,wh.ch.suggests th. existence of low-energy fluctuations.

关键词： one–th.rd magnetization plateau ph.se nuclear magnetic resonance h.neycomb-lattice antiferromagnet Kitaev interaction

Robustness of th. octupole collectivity in 144Ba with.n th. cranking covariant density functional th.ory in 3D lattice

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Nuclear Science and Tech.iques 2024年第8期35卷 124-131页

作者： Ze‑Kai Li Yuan‑Yuan Wang Math.matics and physics Department North China Electric Power UniversityBeijing 102206China h.bei Key laboratory of physics and Energy Tech.ology North China Electric Power UniversityBaoding 071000China

Th. octupole deformation and collectivity in octupole double-magic nucleus 144Ba are investigated using th. Cranking covariant density functional th.ory in a th.ee-dimensional lattice *** reduced B(E3)transition probability is implemented for th. first time in semiclassical approximation based on th. microscopically calculated electric octupole *** available data,including th. I-ωrelation and electric transitional probabilities B(E2)and B(E3)are well ***,it is sh.wn th.t th. ground state of 144Ba exh.bits axial octupole and quadrupole deformations th.t persist up to h.gh.spins(I≈24h..

关键词： Octupole collectivity Cranking covariant density functional th.ory Rotational spectrum Electric transitional probabilities

Role of self-assembled molecules’anch.ring groups for surface defect passivation and dipole modulation in inverted perovskite solar cells

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Ch.nese physics B 2024年第10期33卷 108-115页

作者： Xiaoyu Wang Muh.mmad Faizan Kun Zh.u Xinjiang Wang Yuh.o Fu Lijun Zh.ng Key laboratory of Superh.rd Materials College of PhysicsJilin UniversityChangchun 130012China State Key laboratory of Integrated Optoelectronics Key Laboratory of Automobile Materials of MOECollege of Materials Science and EngineeringJilin UniversityChangchun 130012China

Inverted perovskite solar cells h.ve gained prominence in industrial advancement due to th.ir easy fabrication,low h.steresis effects,and h.gh.*** th.se advantages,th.ir efficiency is currently limited by excessive defects and poor carrier transport at th. perovskite-electrode interface,particularly at th. buried interface between th. perovskite and transparent conductive oxide(TCO).Recent efforts in th. perovskite community h.ve focused on designing novel self-assembled molecules(SAMs)to improve th. quality of th. buried ***,a notable gap remains in understanding th. regulation of atomic-scale interfacial properties of SAMs between th. perovskite and TCO *** understanding is crucial,particularly in terms of identifying ch.mically active anch.ring *** th.s study,we used th. star SAM([2-(9h.carbazol-9-yl)eth.l]ph.sph.nic acid)as th. base structure to investigate th. defect passivation effects of eigh. common anch.ring groups at th. perovskite-TCO *** findings indicate th.t th. ph.sph.nic and boric acid groups exh.bit notable *** groups fulfill th.ee key criteria:th.y provide th. greatest potential for defect passivation,exh.bit stable adsorption with.defects,and exert significant regulatory effects on interface *** anch.ring groups exh.bit enh.nced passivation capabilities for defect energy levels due to th.ir superior Lewis base properties,wh.ch.effectively neutralize local ch.rges near *** various defect types,iodine vacancies are th. easiest to passivate,wh.reas iodine-substituted lead defects are th. most ch.llenging to *** study provides compreh.nsive th.oretical insigh.s and inspiration for th. design of anch.ring groups in SAMs,contributing to th. ongoing development of more efficient inverted perovskite solar cells.

关键词： inverted perovskite solar cell defect passivation self-assembled molecule interface engineering first-principles calculation