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Unraveling post-growth mechanisms of monolayer CsPbBr3 nanocubes:Laser-enhanced transformations and cathodoluminescence-electron microscopy correlations

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Journal of Energy Chemistry 2025年第1期100卷 146-156页

作者： Mingxing Li Xiaoge Wang Xiaofan Cao Zhiqun He Chunjun Liang Mingxing Chen Jing Ju Fangtian You key laboratory of Luminescence and Optical information Ministry of Education Institute of Optoelectronic Technology Beijing Jiaotong University Beijing National laboratory for Molecular Sciences (BNLMS) College of Chemistry and Molecular Engineering Peking University

Lead-halide perovskite nanoparticles（LHP NPs） are highly promising materials for next-generation displays and solid-state lighting due to their exceptional optical properties. However, their inherent instability presents a significant challenge. Recent advances have demonstrated that optoelectronic devices based on monolayer nanoparticle films exhibit both high luminescence efficiency and long-term *** research demonstrates that mobility limitations and anisotropic alignments in CsPbBr3nanocube monolayer films are key to their stabilization, hindering spontaneous growth through face-to-face fusion and resulting in the formation of connecting necks in a diagonal direction. Introducing laser irradiation confirmed this by significantly accelerating nanocubes growth, increasing mobility, and enhancing local structural ordering, leading to larger and more regularly shaped nanosheets. Fourier transform infrared spectroscopy and energy dispersive spectroscopy line-scan analyses indicated that laser irradiation did not disrupt the ligand structure. Transmission electron microscopy and correlative cathodoluminescence electron microscopy revealed the effects of post-growth and heterogeneous structures, including enhanced luminescence and inhomogeneous intensity in the nanosheets. These findings deepen the understanding of the post-growth mechanism of monolayer nanoparticles and the structure-emission correlation and highlight the unique role of laser irradiation in directing the formation of well-defined and regular nanostructures.

关键词： Post-growth mechanism Heterogeneous structure Single-particle spectroscopy Laser irradiation

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Thermoelectric properties of Sr_(0.9)La_(0.1)TiO_3 and Sr_(2.7)La_(0.3)Ti_2O_7 with 15% Ag addition

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Journal of Rare Earths 2014年第4期32卷 314-319页

作者：李翰博郑赣鸿戴振翔袁振亨王海秋马永青 anhui key laboratory of information materials and devices School of Physics and Material ScienceAnhui University

15%Ag-added cubic perovskites Sr0.9La0.1TiO3 and Ruddlesden-Popper （RP） phases Sr2.7La0.3Ti2O7 were fabricated via hydrothermal synthesis, cold pressing and high-temperature sintering. The structure and thermoelectric properties were also investi-gated for all samples. The results indicated that Ag precipitated as a second phase. Ag addition made electrical conductivity and ab-solute Seebeck coefficient enhanced, as a result, the ZT values were enhanced both for two series. Compared with cubic perovskite, RP phase was subjected to smaller impact by Ag addition. The reasons for enhancing ZT value and the different impact for two series by Ag addition were also discussed.

关键词： ceramics crystal structure Ag-added thermal conductivity electrical properties rare earths

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YVO_4: Eu^(3+) photoluminescence films with Bi doping

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Rare Metals 2014年第6期33卷 723-726页

作者： Zhen-Xiang Dai Yu-Qin Dong Gan-Hong Zheng Shi-Bing Qian Qian Ma Guang Li anhui key laboratory of information materials and devices School of Physics and Material Science Anhui University

Y0.95-xEu0.05VO4：x Bi3＋（x = 0, 0.02, 0.04,0.06, 0.08, and 0.10 mol） six photoluminescence films were deposited on glass substrates by sol–gel spin-coating method. Their morphology and optical property were investigated. The micrographs for the six samples have no change with Bi3→doping. The emission spectra result shows that a dominant red emission peak at 620 nm, which is due to the Eu3＋electric dipole transition of5D0→7F2,is observed under excitation wavelengths 254 nm. Furthermore, with the content of Bi3→increasing from 0 to0.08 mol, the emission intensity of samples strengthens and reaches a maximum at x = 0.08 mol, then decreases with the doping content to 0.10 mol.

关键词： Photoluminescence film Bi3+content Emission intensity

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Quantum Teleportation of Tripartite Arbitrary State via W State

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Communications in Theoretical Physics 2005年第6X期44卷 1021-1024页

作者： XUE Zheng-Yuan YI You-Min CAO Zhuo-Liang anhui key laboratory of information material & devices School of Physics & Material Science Anhui University Hefei 230039 China

A scheme of teleportation of a tripartite state via W state is suggested. The W state serves as quantum channels. Standard Bell-state measurements and Von Neumann measurements are performed. After the sender operates the measurements and informs the receiver her results, he can reconstruct the original state by the corresponding unitary transformation. The probability of the successful teleportation is also obtained.

关键词： teleportation entanglement W state unitary transformation

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Teleportation of Multipartite State via W State

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Communications in Theoretical Physics 2006年第3期45卷 433-436页

作者： XUE Zheng-Yuan YI You-Min CAO Zhuo-Liang anhui key laboratory of information material ＆ devices School of Physics ＆ Material Science Anhui University Hcfci230039 China

A scheme of teleporting a multi-particle state via W state is presented. The W class states serve as quantum channels. After the sender operates both Von Neumann measurements and Bell-state measurements and then inform the receiver her results, the receiver can reconstruct the original state by corresponding unitary transformation. The probability of successful teleportation is also obtained. Special example of four-particle state is discussed in detail.

关键词： teleportation multipartite state W state Bell-state measurement

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An Unprecedented Efficiency with Approaching 21%Enabled by Additive‑Assisted Layer‑by‑Layer Processing in Organic Solar Cells

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Nano-Micro Letters 2025年第2期17卷 372-375页

作者： Shuai Xu Youdi Zhang Yanna Sun Pei Cheng Zhaoyang Yao Ning Li Long Ye Lijian Zuo Ke Gao key laboratory of Advanced Green Functional materials College of ChemistryChangchun Normal UniversityChangchun 130032People’s Republic of China Shandong Provincial key laboratory for Science of material Creation and Energy Conversion School of Chemistry and Chemical EngineeringShandong UniversityQingdao 266237People’s Republic of China College of Polymer Science and Engineering Sichuan UniversityChengdu 610065People’s Republic of China State key laboratory and Institute of Elemento‑Organic Chemistry Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071People’s Republic of China Institute of Polymer Optoelectronic materials and devices State key laboratory of Luminescent materials and devices South China University of TechnologyGuangzhou 510640People’s Republic of China Tianjin key laboratory of Molecular Optoelectronic Sciences School of Materials Science and EngineeringTianjin UniversityTianjin 300350People’s Republic of China State key laboratory of Silicon materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China

Recently published in Joule,Feng Liu and colleagues from Shanghai Jiaotong University reported a record-breaking 20.8%power conversion efficiency in organic solar cells(OSCs)with an interpenetrating fibril network active layer morphology,featuring a bulk p-in structure and proper vertical segregation achieved through additive-assisted layer-by-layer *** optimized hierarchical gradient fibrillar morphology and optical management synergistically facilitates exciton diffusion,reduces recombination losses,and enhances light capture *** approach not only offers a solution to achieving high-efficiency devices but also demonstrates the potential for commercial applications of OSCs.

关键词： Organic solar cells Additive-assisted layer-by-layer processing Three-dimensional fibril morphology Bulk p-i-n structure Optical management

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Janus MXene film with gradient structure for highly efficient terahertz and infrared electromagnetic absorption

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Nano Research 2025年第1期18卷 434-442页

作者： Shaodian Yang Weiqiang Huang Zhiqiang Lin Zibo Chen Rongliang Yang Yi Jia Xuebin Liu Rui Wang Zhiping Zeng Yougen Hu Huanjun Chen Xuchun Gui11 State key laboratory of Optoelectronic materials and Technologies School of Electronics and Information TechnologySun Yat-sen UniversityGuangzhou 510275China National key laboratory of materials for Integrated Circuits Shenzhen Institute of Advanced Electronic MaterialsShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China China Academy of Aerospace Science and Innovation Beijing 100176China Guangdong Province key laboratory of Display material and Technology Guangzhou 510275China School of materials Science and Engineering Sun Yat-sen UniversityGuangzhou 510275China

Electromagnetic interference (EMI) shielding inhigh-frequency range, especially the rapidly growing terahertz(THz) frequency range, attracts increasing attention due tothe potential application of terahertz in 6G wirelesscommunication, and security inspection. However, traditionalconductive EMI films typically achieve high shieldingeffectiveness through strong reflection, which may causesecondary pollution to other devices. Here, a gradientstructure strategy was proposed to constructTi_(3)C_(2)Tx/hydroxypropyl methyl cellulose (HPMC) film, in whichthe content of Ti_(3)C_(2)Tx gradually increases along the thicknessdirection, resulting in different conductivity of the two surfaces(surface-M and surface-H) for the film. The obtained gradientfilmexhibits an EMI shielding efficiency of over 48.5 dB in theTHz range (0.2-1.6 THz) at a thickness of 40 μm. Especially,as the THz waves incident from the surface-H to the film, the absorption effectiveness reaches 48.2 dB (average absorbedpower loss up to 91.4%), and the reflection effectiveness is only 0.3 dB. In additions, the gradient-film also demonstrates ahigh absorption rate of 95.5% in the infrared band (2.5-16.7 μm). Moreover, the gradient-film exhibits an excellent tensilestress and Young’s modulus value of 173.1 MPa and 2.8 GPa, respectively. Therefore, the gradient-film proposed in thiswork, with excellent electromagnetic absorption in both THz and infrared band, provides a promising candidate for the nextgenerationEMI shielding applications.

关键词： electromagnetic interference shielding Janus film terahertz MXene

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Implementing ancilla-free phase covariant quantum cloning with atoms trapped in cavities

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Science China(Physics,Mechanics & Astronomy) 2011年第2期54卷 262-267页

作者： YE Liu XIONG Wei LI AiXia GUO GuangCan anhui key laboratory of information material & devices School of Physics & Material Science Anhui University Hefei 230039 China laboratory of Quantum information University of Science and Technology of China Hefei 230026 China

We propose a scheme to implement ancilla-free 1 to 2 optimal phase covariant quantum cloning with atoms trapped in *** the scheme the W-class state of three atoms,which are individually trapped in three spatially separated cavities,is deterministically *** by the use of this W-class state and detection of the atomic state,an optimal ancilla-free 1 to 2 phase-covariant quantum cloning between two spatially separated trapped atoms can be *** scheme is robust for atomic spontaneous decay,cavity decay and photon leakage out of the *** principle,an M+1-atom W-class state can be generated by using such an *** this scheme also can be generalized to implement 1 to M ancilla-free phase-covariant quantum cloning.

关键词： ancilla-free 1 to 2 optimal phase covariant quantum cloning atoms trapped in cavities

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Distributed fiber optic sensing system for vibration monitoring of 3D printed bridges

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Optoelectronics Letters 2025年第1期21卷 28-34页

作者： ZHAO Shuai ZHOU Ran LUO Mingming LIU Jianfei LIU Xiongfei ZHOU Tao School of Electronic information Engineering Hebei University of Technology Tianjin key laboratory of Electronic materials and devices School of Civil Engineering and Transportation Hebei University of Technology Tianjin Jinhang Institute of Technical Physics

The fiber optic sensing technology provides data support in structural health monitoring of the macro facilities, including design, construction, and maintenance of bridges, tunnels, ports and other infrastructures. In this paper, a distributed vibration sensing system is proved to be responsive to a single touch over a 1.8-m-long equivalent fiber segment, covering a vibration frequency from 5 Hz to 25 kHz. The sensing fiber was arranged as an S type layout on the bridge to recognize the standing state, windblown disturbance, and walking vibration. Moreover, the knocking and climbing events are recognized fiber laying spinning lines and hanging on the fences, respectively. The demonstration shows an accurate positioning and sensitive vibration monitoring applied on the automated three-dimensional(3D) printed bridge, which is applicable to all kinds of 3D printed facilities as intelligent sensory neuro-networks.

关键词： Spinning (fibers)

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Core–Shell Structure and Luminescence of SrMoO_4:Eu^(3+)(10%) Phosphors

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Journal of materials Science & Technology 2016年第12期32卷 1361-1371页

作者： Yanan Zhu Ganhong Zheng Zhenxiang Dai Lingyun Zhang Jingjing Mu anhui key laboratory of information materials and devices School of Physics and Materials ScienceAnhui University

SrMoO4：Eu^3＋（10%） phosphors were produced via hydrothermal synthesis and *** systematically analyzed how the morphology and luminescence properties of the phosphors were affected by the synthesis conditions,including the p H of the precursor solution,stirring speed,and postsintering *** samples synthesized at p H = 8 and 9 were spindle-like rods with a core-shell *** the stirring speed increased to Vs = 150 r/min,the core-shell structure *** measurements indicated that the Sr Mo O4：Eu^3＋samples under ultraviolet radiation produced strong red emission centered at 616 *** luminescence properties were greatly affected by the p H,stirring during hydrothermal reaction,and use of *** related mechansim is discussed.

关键词： SrMoO4 Core-sheIlstructure Eu^3+-doped Luminescence

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