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Modulation of Bessel-like vector vortex beam using the resonant magneto-optical effect in rubidium vapor

Chinese Physics B 2025年第2期34卷 274-280页

作者： Yan Ma Xin Yang Hong Chang Ming-Tao Cao Xiao-Fei Zhang Rui-Fang Dong Shou-Gang Zhang Key Laboratory of Time Reference and Applications National Time Service CenterChinese Academy of Sciences(CAS)Xi’an 710600China School of Astronomy and Space Science University of Chinese Academy of SciencesBeijing 100049China Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic DevicesSchool of PhysicsXi’an Jiaotong UniversityXi’an 710049China Department of Physics Shaanxi University of Science and TechnologyXi’an 710021China Hefei National Laboratory Hefei 230088China

The Bessel-like vector vortex beam(BlVVB)has gained increasing significance across numerous ***,its practical application is restricted by manufacturing difficulties and polarization ***,the ability to manipulate its degrees of freedom is highly *** this paper,the full-domain polarization modulation of BlVVB within a hot atomic ensemble has been *** begin with the theoretical analysis of the resonant magneto-optical effect of atoms with a horizontal linear-polarized beam and experimentally demonstrate precise manipulation of the polarization state across the entire domain of the BlVVB,achieving an error margin of less than 3°at various cross-sectional *** study provides a novel approach for the modulation of BlVVB based on atomic media,which holds potential applications in sensitive vector magnetometers,optical communications,and signal processing.

关键词： Bessel-like vector vortex beam resonant magneto-optical effect polarization modulation Rb atomic ensemble

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Design and Analysis of Ln-IZO TFTs For Electrophoretic Display Driving

Design and Analysis of Ln-IZO TFTs For Electrophoretic Displ...

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International Conference on Display technology, 2024

作者： Zhou, Lei Xu, Miao Wu, Wei-Jing Peng, Jun-Biao State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou China Guangzhou New Vision Optoelectronic Co. Ltd Guangzhou China

In this paper, we presented an Electrophoretic display(EPD) based on high mobility Ln-IZO thin film transistor (TFT) panel. The display panel has a 104*212 pixel array with a diagonal size of 2.13inch. We discuss the relationship between charge rate versus TFT mobility, clock feed-though effect versus TFT parasitic capacitance, charge retention versus leakage current. Ln-IZO TFTs have advantages in EPD displays in terms of high mobility, low parasitic capacitance and low leakage current. © 2024 John Wiley and Sons Inc. All rights reserved.

关键词： Thin film transistors

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Site occupation and energy transfer in full color emitting phosphor Ba2Ca(BO3)2:Ce3+(K+),Eu^(2+),Mn2+

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Journal of Rare Earths 2022年第11期40卷 1691-1698,I0002页

作者： Qingsong Hu Zaifa Pan Guijie Liang Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices Hubei University of Arts and ScienceXiangyang 441053China College of Chemical Engineering Zhejiang University of TechnologyHangzhou 310014China

White light-emitting diodes(WLEDs)fabricated by single-phase full color emitting phosphor are an emerging solution for health *** crystallographic site occupation of activators in a proper host lattice is crucial for sophisticated design of such ***,we report a high quality white lightemitting phosphor Ba_(2)Ca(BO_(3))_(2):Ce^(3+)(K^(+)),Eu^(2+),Mn^(2+)with spectral distribution covering whole visible *** light emission originates from Ce3+ions occupying preferentially Ba^(2+)site by controlling synthesis *** and red lights are obtained from Eu^(2+)occupying Ba2+(and Ca)site and Mn2+occupying Casite,*** this triple-doped phosphor,strong red emission with a low concentration of Mn2+is realized by the efficient energy transfer from Ce3+and Euto ***,high quality white light is accomplished by properly tuning the relative doping amount of Ce^(3+)(K^(+))/Eu^(2+)/Mn^(2+)based on efficient simultaneous energy *** results indicate that Ba_(2)Ca(BO_(3))_(2):Ce^(3+)(K^(+)),Eu^(2+),Mn^(2+)is a promising white light-emitting phosphor in WLEDs application.

关键词： Single-phase Full color phosphor Site preference occupation Energy transfer Ba2Ca(BO3)2:Ce3+(K+) Eu^(2+) Mn2+ Rare earths

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High-performance polymer solar cells with efficiency over 18%enabled by asymmetric side chain engineering of non-fullerene acceptors

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Science China Chemistry 2021年第7期64卷 1192-1199页

作者： Shihao Chen Lingwei Feng Tao Jia Jianhua Jing Zhicheng Hu Kai Zhang Fei Huang Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640China

Side-chain engineering has been considered as one of the most promising strategies to optimize non-fullerene small-molecule acceptors(NFSMAs).Previous efforts were focused on the optimization of alkyl-chain length,shape,and branching *** this work,we propose that asymmetric side-chain engineering can effectively tune the properties of NFSMAs and improve the power conversion efficiency(PCE)for binary non-fullerene polymer solar cells(NFPSCs).Specifically,by introducing asymmetric side chains into the central core,both of the absorption spectra and molecule orientation of NFSMAs are efficiently *** blended with polymer donor PM6,NFPSCs with EH-HD-4F(2-ethylhexyl and 2-hexyldecyl side chains)demonstrate a champion PCE of 18.38%with a short-circuit current density(J_(SC))of 27.48 mA cm^(-2),an open circuit voltage(V_(OC))of 0.84 V,and a fill factor(FF)of *** studies manifest that the proper asymmetric side chains in NFSMAs could induce more favorable face-on molecule orientation,enhance carrier mobilities,balance charge transport,and reduce recombination losses.

关键词： polymer solar cells small-molecular acceptors asymmetric side-chains

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Enhanced potassium storage of carbon nanofibers as binderfree anodes enabled by coupling ultra-small amorphous Sb_(2)O_(3),graphene modification and sulfur doping

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Rare Metals 2024年第1期43卷 51-64页

作者： Zhao Huang Yu-Kang Lou Lin Peng Yuan Peng Meng-Meng Wang Ming Zhang College of Railway Transportation Hunan University of TechnologyZhuzhou 412007China College of Semiconductors(College of Integrated Circuits) Changsha Semiconductor Technology and Application Innovation Research InstituteHunan UniversityChangsha 410082China Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education College of Semiconductors(College of Integrated Circuits)Hunan UniversityChangsha 410082China

Considering the intrinsic advantages of natural copiousness and cost-effectiveness of potassium resource,potassium-ion batteries(KIBs) are booming as prospective alternatives to lithium-ion batteries(LIBs) in large-scale energy storage scenarios. Nevertheless, lacking desirable electrodes for reversibly hosting the bulky K+hinders the widespread application of KIBs, and it needs to be urgently solved. Hereon, the porous S-doped Sb_(2)O_(3)-graphene-carbon(SAGC) nanofibers are manufactured through an adjustable and facile approach, which involves electrospinning, in situ etching and sulfuration. The synthesized SAGC is featured by the ultra-small amorphous Sb_(2)O_(3) homogeneously wrapped inside the carbon matrix, as well as the co-incorporation of graphene and sulfur. Tentatively,the SAGC nanofiber sheets are applied as binder-free anodes for KIBs, exhibiting a prominent cycling life(256.72 m Ah·g^(-1) over 150 cycles at 100 m A·g^(-1)) and rate·g^(-1) over 100 cycles at 1 A·g^(-1)). The positive synergy among all the active components accounts for the distinguished performances of the SAGC. By reinforcing the tolerability to the swelling stress, producing the valid electrochemical active sites, and promoting the charge transferring for reversible K+uptake, the SAGC finally renders the excellent cyclability, capacity, and rate capability. Moreover, the extrinsic electrochemical pseudocapacitance characteristics induced by the porous carbon substrate elevate the K-storage capacity of the SAGC as well. It is hoped that the conclusions drawn may offer new insights into a direction for the high-performance binderfree KIB anodes.

关键词： S-doped Sb_(2)O_(3)-graphene-carbon Nanofibers Binder-free Anodes Potassium-ion batteries

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A Near-infrared Non-fullerene Acceptor with Thienopyrrole-expanded Benzo[1,2-b:4,5-b′]dithiophene Core for Polymer Solar Cells

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Chinese Journal of Polymer Science 2021年第1期39卷 35-42,I0005页

作者： Zhen Chen Shan-Shan Ma Kai Zhang Zhi-Cheng Hu Qing-Wu Yin Fei Huang Yong Cao Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640China

A near-infrared non-fullerene acceptor(NFA) BDTIC, based on thienopyrrole-expanded benzo[1,2-b:4,5-b′]dithiophene unit(heptacyclic S,N-heteroacene) as core, is designed and synthesized. The aromatic pyrrole ring with strong electron-donating ability in the core enhances the intramolecular charge transfer effect, finely tunes the optical bandgap and absorption profile of BDTIC, and thus results in a narrowed optical bandgap(E_(g)^(opt)) of 1.38 eV and a near-infrared absorption to 900 nm. When BDTIC is paired with donor polymer PBDB-T to fabricate organic solar cells, the optimized device achieves a best power conversion efficiency of 12.1% with a short-circuit current density of 20.0 mA·cm^(-2) and an open-circuit voltage of 0.88 V. The photovoltaic performance benefits from the broad absorption, weak bimolecular recombination, efficient charge separation and collection, and favorable blend morphology. This work demonstrates that thienopyrroleexpanded benzo[1,2-b:4,5-b′]dithiophene unit(heptacyclic S,N-heteroacene) is a promising building unit to construct high-performance NFAs by enhancing the intramolecular charge transfer effect, broadening absorption as well as maintaining good intermolecular stacking property.

关键词： Organic solar cells(OSCs) Non-fullerene acceptors(NFAs) Heptacyclic S,N-heteroacene

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Improving the Accuracy of Complex Solution detection in Wedge Sample Pool Based on Machine Learning 23

Improving the Accuracy of Complex Solution Detection in Wedg...

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9th International Conference on Computing and Artificial Intelligence, ICCAI 2023

作者： Zhao, Zhe Zhu, Ruina Yang, Yuyan Wang, Huiquan Wang, Jinhai Han, Guang School of Electronics and Information Engineering TianGong University Tianjin300387 China Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems Tianjin300387 China School of Life Sciences TianGong University Tianjin300387 China Tianjin Key Laboratory of Quality Control and Evaluation Technology for Medical Devices Tianjin300387 China

ISBN: (纸本)9781450399029

In order to effectively increase the information content of multidimensional spectral images of complex solutions and improve the accuracy of complex solution component analysis, this article proposes a method of using a wedge-shaped model (DILA-WSM) at different incident angles to improve the detection accuracy of complex solutions. In this study, Monte Carlo method was used to simulate photon propagation in wedge-shaped models at different incident angles, and multi-dimensional spectral images were obtained under different optical parameters. A regression model of 26 multi-dimensional spectral images collected under DILA-WSM and different optical parameters was established using partial least squares regression (PLSR). Compared with the traditional flat model, the introduction of DILA-WSM increased the average correlation coefficient (Rp) of the prediction set by 0.5862 and reduced the root mean square error of the prediction set (RMSEP) by 0.0392. The results show that the introduction of DILA-WSM can effectively increase the information content of multi-dimensional spectral images of complex solutions, thereby improving the accuracy of complex solution component analysis. © 2023 Copyright held by the owner/author(s).

关键词： Machine learning

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Improving photovoltaic parameters of all-polymer solar cells through integrating two polymeric donors

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Science China Chemistry 2021年第11期64卷 2010-2016页

作者： Kang An Feng Peng Wenkai Zhong Wanyuan Deng Difei Zhang Lei Ying Hongbin Wu Fei Huang Yong Cao Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou510640China

The incorporation of an additional component into the bulk-heterojunction light-harvesting layer of polymer solar cells has been considered as an effective strategy to enhance photovoltaic *** we demonstrated that the photovoltaic parameters of all-polymer solar cells could be enhanced upon replacing a certain ratio of electron-donating polymer PTz BI-o F with a widely used wide-bandgap polymer donor *** photoluminescent characterizations confirmed the F?rster resonance energy transfer from incorporated PM6 to PTz BI-o ***,the combination of Fourier-transform photocurrent spectroscopy and electroluminescence external quantum efficiencies measurements demonstrated reduced non-radiative recombination energy loss upon the incorporation of PM6,resulting in a slightly enhanced open-circuit voltage of 0.88 V of the ternary cell regarding the binary PTz BI-o F:PFA1 *** optimized ternary blend devices comprising of PTz BI-o F:PM6:PFA1 presented an impressively high power conversion efficiency of 16.3%,and the efficiency remains 15%on a device with an enlarged effective area of 1 cm^(2),demonstrating the great potential of these all-PSCs for potential applications.

关键词： all-polymer solar cells ternary blend high performance large area device

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Generation,bonding and reactivity of transient zinc-substituted silylenes

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Science China Chemistry 2024年第4期67卷 1256-1262页

作者： Cheng Xu Thayalan Rajeshkumar Laurent Maron Xuebing Leng Yaofeng Chen State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032China Spin-X Institute School of Chemistry and Chemical EngineeringState Key Laboratory of Luminescent Materials and DevicesGuangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsSouth China University of TechnologyGuangzhou 510641China LPCNO CNRS&INSAUniversitéPaul SabatierToulous 31077France

The metal-substituted silylenes are of high interest,as the theoretical studies indicated that the silylenes with electropositive substituents have a small ΔE_(S-T)(singlet-triplet energy gap)or even the ground-state ***,such compounds are highly unstable,and only two transient alkali metal-substituted silylenes M(^(t)Bu_(3)Si)Si:(M=Li,K)were generated by photoextrusion of the alkali metal-substituted silacyclopropenes and merely studied by spectroscopic method(EPR)at low temperature(14 to 50 K).Herein,we report the generation of transient zinc-substituted silylenes from zinc silacyclopropanyl complexes under very mild and convenient *** generated transient zinc-substituted silylenes are highly reactive and undergo intermolecular cycloaddition with alkenes for the synthesis of zinc-substituted Si-heterocyclic *** there is no substrate,the zinc-substituted silylenes attack the C-C bonds of the β-diketiminato ligands and break the C-C *** studies further highlight the silylene nature of the zinc-substituted silylene and a very small ΔE_(S-T)(4.4 kcal/mol).

关键词： zinc complex silylene C-C bond cleavage cycloaddition DFT calculations

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Localization effect in single crystal of RuAs_(2)

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Chinese Physics B 2024年第4期33卷 195-200页

作者：易哲铠刘琪光双魁徐升岳小宇梁慧李娜周颖吴丹丹孙燕李秋菊程鹏夏天龙孙学峰王义炎 Anhui Key Laboratory of Magnetic Functional Materials and Devices Institute of Physical Science and Information TechnologyAnhui UniversityHefei 230601China Department of Physics and Key Laboratory of Strongly-Coupled Quantum Matter Physics University of Science and Technology of ChinaHefei 230026China Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials&Micro-nano Devices Renmin University of ChinaBeijing 100872China School of Optical and Electronic Information Suzhou City UniversitySuzhou 215104China School of Physics and Optoelectronic Engineering Anhui UniversityHefei 230601China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China

We report the magnetotransport and thermal properties of RuAs_(2) single ***_(2) exhibits semiconductor behavior and localization *** crossover from normal state to diffusive transport in the weak localization(WL)state and then to variable range hopping(VRH)transport in the strong localization state has been *** transitions can be reflected in the measurement of resistivity and Seebeck *** magnetoresistance(NMR)emerges with the appearance of localization effect and is gradually suppressed in high magnetic *** temperature dependent phase coherence length extracted from the fittings of NMR also indicates the transition from WL to *** measurement of Hall effect reveals an anomaly of temperature dependent carrier concentration caused by localization *** findings show that RuAs_(2) is a suitable platform to study the localized state.

关键词： weak localization variable range hopping RuAs_(2) single crystal

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