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Super‑elastic Scintillating fibers and Fabrics for Efficient and Visual Radiation Detection

Advanced fiber Materials 2023年第4期5卷 1493-1504页

作者： Minghui Du Jin Wang Sijia Xu Hongwei Li Zhihao Zhang Yankun Qi Shichao Lv Jianrong Qiu Yurong Yan Shifeng Zhou State key laboratory of Luminescent Materials and devices School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510641China Institute of photonics Technology Jinan UniversityGuangzhou 510632China National Engineering Research Center of Novel Equipment for Polymer Processing School of Mechanical and Automotive EngineeringSouth China University of TechnologyGuangzhou 510641China key Lab Guangdong High Property&Functional Polymer Materials School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510641China Guangdong Provincial key laboratory of fiber Laser Materials and Applied Techniques Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and DevicesGuangzhou 510641China College of Optical Science and Engineering State Key Laboratory of Modern Optical InstrumentationZhejiang UniversityHangzhou 310027China

The fabrication of advanced radiation detectors is an important subject due to the wide use of radiation sources in scientific instruments,medical services,security check,non-destructive inspection,and nuclear ***,the manufacture of flexible and stretchable radiation detectors remains a ***,we report the scalable fabrication of super-elastic scintillating fibers and fabrics for visual radiation detection by thermal drawing and melt-spinning methods using styrene-b-(ethylene-co-butylene)-b-styrene,and scintillating Gd_(2)O_(2)S:Tb(GOS).Microstructure evolution,rheological properties,and radiation-composite interaction are studied to reveal the excellent processability,elasticity,and radiation detection ability of the fabricated *** from the physical crosslinking structural features of the polymer matrix and the excellent radiation absorption capacities of GOS,the resulting fiber can sustain high strains of 765%with a high content of GOS dopants(2 wt.%)and has excellent X-ray detection performance with the limit down to 53 nGy_(air)s^(-1).Furthermore,stretchable fabrics are constructed,and their applications in various fields,such as radiation warning,and X-ray imaging,are *** work not only provides a new type of super-elastic scintillating fibers and fabrics for smart textiles but also demonstrates their potential applications in the nuclear field.

关键词： Elastic fiber Radiation detection Optical materials X-ray imaging

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Nonparaxial propagation of radially polarized chirped Airy beams in uniaxial crystal orthogonal to the optical axis

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Chinese Physics B 2021年第1期30卷 248-255页

作者： Yaohui Chen Lixun Wu Zhixiong Mo Lican Wu Dongmei Deng Guangdong Provincial key laboratory of Nanophotonic Functional Materials and devices South China Normal UniversityGuangzhou 510631China

The nonparaxial propagation of radially polarized chirped Airy beams(RPCAiBs) in uniaxial crystal orthogonal to the optical axis is analytically studied. The effects of the first and the second order chirp factors, and the ratio of the extraordinary refractive index to the ordinary refractive index on the nonparaxial evolution of RPCAi Bs in different observation planes are investigated in detail. The results show that when one parameter changes, different components behave differently, and even the same component has various behavior in different directions. The initial slope of RPCAi Bs in the x-direction varies more with the first order chirp factor than that in the y-direction. Meanwhile, with the second order chirp factor becoming larger, the depth of the focus of the y-component in the x-direction decreases while that in the y-direction has no difference. In addition, the different ratios of the extraordinary refractive index to the ordinary refractive index change the difference of the depth of the focus between the x-and the y-components.

关键词： radial polarization nonparaxial propagation Airy beam uniaxial crystal chirp

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Tailoring microstructure and electrical transportation through tensile stress in Bi_(2)Te_(3) thermoelectric fibers

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Journal of Materiomics 2020年第3期6卷 467-475页

作者： Min Sun Guowu Tang Bowen Huang Zhongjia Chen Yu-Jun Zhao Hanfu Wang Ziwen Zhao Dongdan Chen Qi Qian Zhongmin Yang School of Physics and Optoelectronics South China University of TechnologyGuangzhou510640China State key laboratory of Luminescent Materials and devices Institute of Optical Communication MaterialsGuangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and DevicesGuangdong Provincial Key Laboratory of Fiber Laser Material and Applied TechniquesSouth China University of TechnologyGuangzhou510640China CAS key laboratory of Nanosystem and Hierarchical Fabrication National Center for Nanoscience and Technology of ChinaBeijing100190China key laboratory of specialty fiber Optics and Optical Access Networks Shanghai Institute for Advanced Communication and Data ScienceSchool of Communication and Information EngineeringShanghai UniversityShanghai200072China

Bismuth telluride(Bi_(2)Te_(3))has attracted much attention in the field of thermoelectrics since it is one kind of commercial room-temperature thermoelectric *** three kinds of Bi_(2)Te_(3) thermoelectric fibers with internal tensile stress are fabricated utilizing an optical fiber template *** effects of internal stress on the microstructure and the electrical transportation of Bi_(2)Te_(3) thermoelectric fibers are *** Bi_(2)Te_(3) cores in the fibers are highly crystalline and possess a tensile nanosheet structure with preferential orientation as evidenced by X-ray diffraction and Raman *** stress can enhance electrical properties of the *** a paper cup generator covered with 20 pieces of optimized fibers provides a μW-level output *** is inferred that tensile stress tuning can be an effective tool for the material optimization of thermoelectric performance.

关键词： Bi_(2)Te_(3) Thermoelectric fiber Tensile stress Electrical transportation

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Annealed Treatment Effect in Poly（3-hexylthiophene）：Methanofullerene Solar Cells

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Chinese Physics Letters 2008年第4期25卷 1411-1414页

作者：於黄忠彭俊彪 Institute of Polymer Optoelectronic Materials and devices Key Lab of Special Functional Materials South China University of Technology Guangzhou 510640 School of Physics South China University of Technology Guangzhou 510640

Polymer photovoltaic devices based on poly（3-hexylthiophene）（P3HT）： [6,6]-phenyl-C61-butyricacid methyl ester （PCBM） 1：1 weight-ratio blend are reported. The effects of various annealing treatments on the device performance are investigated. Thermal annealing shows significant improvement of the device performances. For devices at 130℃ annealing, maximum power conversion efficiency （PCE） of 3.3% and All factor up to 60.3% is achieved under air mass 1.5, 100 m W/cm^2 illumination. We discuss the effect of thermal annealing by the results of ultraviolet-visible absorption spectroscopy （UV-vis）, dark current-voltage curve, atomic force microscopy （AFM）.

关键词： HETEROJUNCTION PHOTOVOLTAIC devices CONJUGATED POLYMERS CHARGE-TRANSPORT HOLE TRANSPORT POLY(3-ALKYLTHIOPHENES) TEMPERATURE ACCEPTOR DONOR

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Inkjet printing for electroluminescent devices： emissive materials, film formation, and display prototypes

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Frontiers of Optoelectronics 2017年第4期10卷 329-352页

作者： Luhua LAN Jianhua ZOU Congbiao JIANG Benchang LIU Lei WANG Junbiao PENG Institute of Polymer Optoelectronic Materials and devices State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 510640 China

Inkjet priming （IJP） is a versatile technique for realizing high-accuracy patterns in a cost-effective manner. It is considered to be one of the most promising candidates to replace the expensive thermal evaporation technique, which is hindered by the difficulty of fabricating low-cost, large electroluminescent devices, such as organic light- emitting diodes （OLEDs） and quantum dot light-emitting diodes （QLEDs）. In this invited review, we first introduce the recent progress of some printable emissive materials, including polymers, small molecules, and inorganic colloidal quantum dot emitters in OLEDs and QLEDs. Subsequently, we focus on the key factors that influence film formation. By exploring stable ink formulation, selecting print parameters, and implementing droplet deposition control, a uniform film can be obtained, which in turn improves the device performance. Finally, a series of impressive inkjet-printed OLEDs and QLEDs prototype display panels are summarized, suggesting a promising future for IJP in the fabrication of large and high-resolution flat panel displays.

关键词： inkjet printing (IJP) inks system film forma-tion organic lightemitting diodes (OLEDs) quantum dotlight-emitting diodes (QLEDs)

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Stability study of saturated red polymer light-emitting diodes

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Chinese Science Bulletin 2007年第12期52卷 1612-1615页

作者： XU Wei PENG JunBiao XU YunHua WANG Jian HUANG Zhe NIU QiaoLi CAO Yong Institute of Polymer Optoelectronic Materials and devices Key Laboratory of Special Functional Materials and Advanced Manufacturing Technology South China University of Technology Guangzhou 510640 China

Saturated red polymer light-emitting diodes have been fabricated with a single emitting polymer blend layer of poly[2-(2-ethylhexyloxy)-5-methoxy-1,4-phenylenevinylene] (MEH-PPV) and poly[9,9-dioc- tylfluorene-co-4,7-di-2-thienyl-2,1,3-benzothiadiazole] (PFO-DBT15). Saturated red emission with the Commission Internationale de l’Eclairage (CIE) coordinates of (0.67, 0.33) was obtained. The device stability was investigated. The results showed that energy transfer occurred from MEH-PPV to PFO-DBT15, and MEH-PPV improved the hole injection and transportation.

关键词：红色有机发光二极管稳定性半导体空子注射

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Pressureless crystallization of glass toward scintillating composite with high crystallinity for radiation detection

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Journal of Materials Science & Technology 2022年第34期129卷 173-180页

作者： Junzhou Tang Shichao Lv Ziyu Lin Guanxin Du Manyun Tang Xu Feng Junpeng Guo Xiang Li Junfeng Chen Lei Wei Jianrong Qiu Shifeng Zhou State key laboratory of Luminescent Materials and devices School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640China Guangdong Provincial key laboratory of fiber Laser Materials and Applied Techniques Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and DevicesGuangzhou 510640China Shanghai Hapstar M&E Equipment Co. Ltd.Shanghai 201109China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 201800China School of Electrical and Electronic Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore College of Optical Science and Engineering State Key Laboratory of Modern Optical InstrumentationZhejiang UniversityHangzhou 310027China

The construction of scintillating ceramics is of great technological importance for various fundamental applications, including medical diagnostic, security inspection, resource exploration and particle physics. The chief challenge is the facile and scalable synthesis of scintillating ceramics with the desirable combination of pore-free, reliable mechanical properties and excellent scintillating performance. Here we present a pressureless glass crystallization strategy for the construction of scintillating composite with high crystallinity. The fabricated scintillating composites are featured by small optical turbidity, excellent mechanical properties, and efficient scintillating luminescence with the scintillating light yield of 15,000 pH/MeV and about 2.46 times higher than that of the commercial BGO single crystal. Moreover, the scintillating composite derived radiation detector device is successfully elaborated. The practical application for monitoring gamma ray is demonstrated and the precision of the device is less than that of the tolerable deviation of 30%. Our results suggest an innovative approach for expanding the category of scintillating material candidates, pointing to practical application in the field of radiation detection.

关键词： Glass Glass crystallization Optical materials Composite Luminescence

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Light field information transmission through scattering media with high fidelity

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Chinese Optics Letters 2023年第12期21卷 70-75页

作者：叶建伟潘土强郑龛培罗智超徐毅付松年王云才秦玉文 Guangdong Provincial key laboratory of Information photonics Technology Institute of Advanced Photonics TechnologySchool of Information EngineeringGuangdong University of TechnologyGuangzhou 510006China Department of Electronic Engineering College of Information Science and TechnologyJinan UniversityGuangzhou 510632China Guangdong Provincial key laboratory of Nanophotonic Functional Materials and devices and guangzhou key laboratory for special fiber photonic devices and Applications South China Normal UniversityGuangzhou 510006China Synergy Innovation Institute of GDUT Heyuan 517000China

Realizing high-fidelity optical information transmission through a scattering medium is of vital importance in both science and applications,such as short-range fiber communication and optical ***,an input wavefront can be reconstructed by inverting the transmission matrix of the scattering ***,this deterministic method for retrieving light field information encoded in the wavefront has not yet been experimentally ***,we demonstrate light field information transmission through different scattering media with near-unity ***-dimensional optical information can be delivered through either a multimode fiber or a ground glass without relying on any averaging or approximation,where their Pearson correlation coefficients can be up to 99%.

关键词： light field information transmission transmission matrix

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Cooperative Rate Splitting Transmit Design for Full-Duplex-Enabled Multiple Multicast Communication Systems

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工程与科学中的计算机建模(英文) 2024年第1期138卷 619-638页

作者： Siyi Duan Mingsheng Wei Shidang Li Weiqiang Tan Bencheng Yu School of Physics and Electronic Engineering Jiangsu Normal UniversityXuzhou221116China School of Computer Science and Cyber Engineering Guangzhou UniversityGuangzhou510006China School of Information Engineering Xuzhou Vocational College of Industrial TechnologyXuzhou221140China

This paper examines the performance of Full-Duplex Cooperative Rate Splitting(FD-CRS)with Simultaneous Wireless Information and Power Transfer(SWIPT)support in Multiple Input Single Output(MISO)*** a Rate Splitting Multiple Access(RSMA)multicast system with two local users and one remote user,the common data stream contains the needs of all users,and all users can decode the common data ***,each user can receive some information that other users need,and local users with better channel conditions can use this information to further enhance the reception reliability and data rate of users with poor channel *** using Cell-Center-Users(CCUs)as a cooperative relay to assist the transmission of common data can improve the average system *** maximize the minimum achievable rate,we optimize the beamforming vector of Base Station(BS),the common streamsplitting vector,the cooperative distributed beamvector and the strong user transmission power under the power budget constraints of BS and relay devices and the service quality requirements constraints of *** the whole problem is not convex,we cannot solve it ***,we propose a low complexity algorithm based on Successive Convex Approximation(SCA)technology to find the optimal solution to the problemunder *** simulation results show that FD C-RSMA has better gain andmore powerful than FD C-NOMA,HD C-RSMA,RSMA and NOMA.

关键词： Full-duplex cooperative rate segmentation SWIPT RSMA power control

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Ultra-long room temperature phosphorescence of indium-based organic inorganic metal halides for naked-eye-visible afterglow

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中国科学:化学英文版 2023年第9期66卷 2576-2582页

作者： Heng Yu Hao Gong Zhaorui Hua Yang Zhang Wenming Sun Shuyan Gong Ganglong Cui Yang Tian Hongbing Fu Beijing key laboratory for Optical Materials and photonic devices Department of ChemistryCapital Normal UniversityBeijing 100048China key laboratory of Theoretical and Computational Photochemistry Ministry of EducationCollege of ChemistryBeijing Normal UniversityBeijing 100875China

Solid-state molecules based on room-temperature phosphorescent(RTP)emission have received extensive attention due to their special optical properties of triplet ***,there are still few solid molecular systems with naked-eye-visible afterglow ***,we introduce 4-phenylbenzylamine(namely PBA)with a long conjugated system into common non-toxic In^(3+)to form an indium-based organic inorganic halide,whose chemical formula is PBA_(3)[InCl_6]·H_(2)***,this hybrid halide generates a RTP emission at 617 nm with a lifetime decay as long as 290.4 ms,expressing a naked-eye-visible afterglow for more than 7 *** mechanism study shows that the long lifetime RTP originated from the specific lamellar stacking of organic molecules and metal halide units,facilitating the interaction between the inorganic layers and organic ***,the material can be potentially used in emergency lighting,information security,and other ***,this work provides a reference for the design and implementation of a more efficient organic-inorganic hybrid system with the ultralong RTP emission.

关键词： phosphorescence indium 4-phenylbenzylamine halide afterglow

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