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Characteristics of GaN-based p-i-n photodetector at low temperature and performances of MCT/GaN-based infrared/ultraviolet dual-colour detector

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Journal of Physics: Conference Series 2011年第1期276卷

作者： Fuhao Liu Jintong Xu Ping Wang Chao Li Dahan Qian Nili Wang Xiangyang Li State Key Laboratories of Transducer Technology Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China Key Laboratory of Infrared Imaging Materials and Detectors Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China

The performances of GaN-based p-i-n photodiode at low temperature are studied. The current-voltage characteristics at different temperatures were measured. The turn-on voltage of GaN-based p-i-n detector decreases from 3.7 V to 3.0 V as temperature increases from 91 K to 286 K. The series resistance and ideality factor of the GaN-based detector is calculated. Values of series resistance are 1508 Ω, 453 Ω, 353 Ω and 295 Ω, at 91 K, 174 K, 224 K and 286 K, respectively .The values of ideality factors are 43.7, 15.4, 12.6 and 11.9, respectively. The spectral response of GaN p-i-n photodiode was measured at different temperature .The results show that with the temperature decreasing, the peak response wavelength gets shorter, and the responsibility gets smaller. The structure of ultraviolet/infrared MCT (mercury cadmium tellurium)/ GaN-based dual-colour detector is designed. MCT medium wave photovoltage photodetector is employed in dual-colour detector. The responsivities of GaN-based detector and MCT-based detector were measured. The dual-colour device can realize the detection of the light between 240 nm and 330 nm, and light between 3.2 μm and 5.8 μm.

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BCB Bonding technology of Back-Side Illuminated COMS Device

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Journal of Physics: Conference Series 2018年第1期986卷

作者： Y Wu G Q Jiang S X Jia Y M Shi Nanjing Electronic Device Institute China Electronics Technology Group Nanjing Jiangsu Province China Key Laboratory of Infrared Imaging Materials and Detectors Shanghai Institute of Technical Physics of the Chinese Academy of Sciences Shanghai China

Back-side illuminated CMOS(BSI) sensor is a key device in spaceborne hyperspectral imaging technology. Compared with traditional devices, the path of incident light is simplified and the spectral response is planarized by BSI sensors, which meets the requirements of quantitative hyperspectral imaging applications. Wafer bonding is the basic technology and key process of the fabrication of BSI sensors. 6 inch bonding of CMOS wafer and glass wafer was fabricated based on the low bonding temperature and high stability of BCB. The influence of different thickness of BCB on bonding strength was studied. Wafer bonding with high strength, high stability and no bubbles was fabricated by changing bonding conditions.

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White-Light Emission and Red Scintillation from Mn2+ Ions Single-Doped Aluminum-Silicate Glasses

SSRN

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SSRN 2022年

作者： Tang, Gao Hua, Zhehao Wei, Qinhua Qin, Laishun Huang, Youqiang Cai, Peiqing Bai, Gongxun Zhou, Zhenzhen Zhou, Gang Ren, Jing Sui, Zexuan Qian, Sen Wang, Zhigang College of Materials and Chemistry China Jiliang University Zhejiang Province Hangzhou310018 China College of Optical and Electronic technology China Jiliang University Zhejiang Province Hangzhou310018 China Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai201899 China Ningbo Sunny Infrared technologies Co. Ltd. Ningbo315400 China College of Physics and Optoelectronic Engineering Harbin Engineering University Harbin150001 China Institute of High Energy Physics Chinese Academy of Sciences Beijing100049 China State Key Laboratory of Particle Detection and Electronics Beijing100049 China

A series of Mn2+ single-doped 20Gd2O3-20Al2O3-60SiO2 (GAS: xMn2+) glasses with Si3N4 as reducing agent were prepared. The presence of [SiO4-x] defects and Mn2+ ions was determined from the absorption and excitation spectra of the glasses. With the increase of Mn2+ concentration, the intensity of blue emission decreases, while the intensity of red emission increases. The color coordinate of GAS: 6Mn2+ glass is (0.264, 0.226). The lifetime of the glasses was tested. Under the monitoring of 440 nm, the fast components (τf) are between 17-85 μs and the slow components (τs) are between 200-650 μs. The former belongs to [SiO4-x] defects, and the latter is [4E(G), 4A1(G)]→6A1(S) transition of Mn2+ ions. Under the monitoring at 630 nm, the τf are between 110-300 μs, and the τs are between 680-1220 μs, which are due to 4T1(G)→6A1(S) transition of Mn2+ ions and Mn2+ pairs, respectively. The energy transfer mechanism of [SiO4-x] defect→Mn2+ ions are explained. And the energy transfer efficiency is over 85%. The maximum photoluminescence quantum yield (PL QY) of the glasses can reach 15.87%. The thermal activation energy of the glasses was calculated. In addition, X-ray excited red luminescence spectra and the mechanism of the glasses were investigated. © 2022, The Authors. All rights reserved.

关键词： Energy transfer

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High-speed InAs/GaSb mid-wave infrared interband cascade photodetector at room temperature

arXiv

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arXiv 2020年

作者： Xie, Zhiyang Huang, Jian Chai, Xuliang Deng, Zhuo Chen, Yaojiang Lu, Qi Xu, Zhicheng Chen, Jianxin Zhou, Yi Chen, Baile School of Information Science and Technology ShanghaiTech University Shanghai201210 China Key Laboratory of Infrared Imaging Materials and Detector Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai200083 China Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences No.1 Sub-Lane Xiangshan Xihu District Hangzhou310024 China Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai200050 China University of Chinese Academy of Sciences Beijing100049 China Physics Department Lancaster University LancasterLA1 4YB United Kingdom

High speed mid-wave infrared (MWIR) photodetectors have important applications in the emerging areas such high-precision frequency comb spectroscopy and light detection and ranging (LIDAR). In this work, we report a high-speed room-temperature mid-wave infrared interband cascade photodetector (ICIP) based on a type-II InAs/GaSb superlattice. The devices show an optical cut-off wavelength around 5µm and a 3-dB bandwidth up to 7.04 GHz. The relatively low dark current density around 9.39 × 10−2 A/cm2 under −0.1 V is also demonstrated at 300K. These results validate the advantages of ICIPs to achieve both high-frequency operation and low noise at room temperature. Limitations on the high-speed performance of the detector are also discussed based on the S-parameter analysis and other RF performance measurement. Copyright © 2020, The Authors. All rights reserved.

关键词： infrared radiation

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Yolk-Shell Nanostructure: An Ideal Architecture to Achieve Harmonious Integration of Magnetic-Plasmonic Hybrid Theranostic Platform

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Advanced materials (Deerfield Beach, Fla.) 2017年第21期29卷 2017 Jun;29(21)页

作者： Li-Sen Lin Xiangyu Yang Zijian Zhou Zhen Yang Orit Jacobson Yijing Liu Angela Yang Gang Niu Jibin Song Huang-Hao Yang Xiaoyuan Chen The Key Lab of Analysis and Detection Technology for Food Safety of the MOE College of Chemistry Fuzhou University Fuzhou 350108 China. Laboratory of Molecular Imaging and Nanomedicine (LOMIN) National Institute of Biomedical Imaging and Bioengineering (NIBIB) National Institutes of Health (NIH) Bethesda MD 20892 USA.

Magnetic-plasmonic hybrid nanoparticles (MPHNs) have attracted great interest in cancer theranostics. However, the relaxivity of the magnetic component is typically reduced by the plasmonic component in conventional core-shell structured MPHNs, due to the presence of a water-impenetrable coating which severely restricts the proximity of protons to the magnetic portion. To circumvent this issue, yolk-shell structured MPHNs comprising a Fe O core within a hollow cavity encircled by a porous Au outer shell are designed. As expected, the introduction of hollow cavity between the magnetic and plasmonic portions significantly prevents the decline in relaxivity of the Fe O core caused by the Au layer. Moreover, in addition to conferring high near-infrared absorption to plasmonic component, the hollow cavity and the pores in the outer shell can also provide a large storage space and release channels for anticancer drugs. Furthermore, the multicomponent nanoparticles (NPs) still have a compact size of less than 100 nm to ensure efficient tumor accumulation. Taken together, the yolk-shell Fe O @Au NPs can be regarded as an ideal magnetic-plasmonic theranostic platform for magnetic resonance/photoacoustic/positron emission tomography multimodal imaging and light-activated chemothermal synergistic therapy.

关键词： harmonious integration magnetic-plasmonic platforms multimodal imaging synergistic therapy yolk-shell nanostructures

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Photoelectric Devices: A Laser and Electric Pulse Modulated Nonvolatile Photoelectric Response in Nanoscale Copper Dusted Metal-Oxide-Semiconductor Structures (Adv. Electron. Mater. 11/2018)

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Advanced Electronic Materials 2018年第11期4卷

作者： Zhikai Gan Peiqi Zhou Anhua Dong Diyuan Zheng Hui Wang State Key Laboratory of Advanced Optical Communication Systems and Networks School of Physics and Astronomy Key Laboratory for Thin Film and Microfabrication Technology of the Ministry of Education Shanghai Jiao Tong University 800 Dongchuan Rd. Shanghai 200240 China Key Laboratory of Infrared Imaging Materials and Detectors Shanghai Institute of Technical Physics Chinese Academy of Sciences 500 Yutian Rd. Shanghai 200083 China

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Dynamic generation or removal of a scalar hair

arXiv

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arXiv 2022年

作者： Liu, Yunqi Zhang, Cheng-Yong Qian, Wei-Liang Lin, Kai Wang, Bin Center for Gravitation and Cosmology College of Physical Science and Technology Yangzhou University Yangzhou225009 China School of Aeronautics and Astronautics Shanghai Jiao Tong University Shanghai200240 China Department of Physics Siyuan Laboratory Jinan University Guangzhou510632 China Escola de Engenharia de Lorena Universidade de São Paulo SP Lorena12602-810 Brazil Faculdade de Engenharia de Guaratinguetá Universidade Estadual Paulista SP Guaratinguetá12516-410 Brazil Hubei Subsurface Multi-scale Imaging Key Laboratory Institute of Geophysics and Geomatics China University of Geosciences Hubei Wuhan430074 China Shanghai Frontier Science Center for Gravitational Wave Detection Shanghai Jiao Tong University Shanghai200240 China

We study dynamic processes through which the scalar hair of black holes is generated or detached in a theory with a scalar field non-minimally coupled to Gauss-Bonnet and Ricci scalar invariants. We concentrate on the nonlinear temporal evolution of a far-from-equilibrium gravitational system. In our simulations, we choose the initial spacetime to be either a bald Schwarzschild or a scalarized spherically symmetric black hole. Succeeding continuous accretion of the scalar field onto the original black hole, the final fate of the system displays intriguing features, which depend on the initial configurations, strengths of the perturbation, and specific metric parameters. In addition to the scalarization process through which the bald black hole addresses scalar hair, we observe the dynamical descalarization, which removes scalar hair from an original hairy hole after continuous scalar field accretion. We examine the temporal evolution of the scalar field, the metrics, and the Misner-Sharp mass of the spacetime and exhibit rich phase structures through nonlinear dynamical processes. Copyright © 2022, The Authors. All rights reserved.

关键词： Black holes

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Cover Picture: Enhanced Peroxidase-Like Properties of Graphene–Hemin-Composite Decorated with Au Nanoflowers as Electrochemical Aptamer Biosensor for the detection of K562 Leukemia Cancer Cells (Chem. Eur. J. 50/2016)

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Chemistry – A European Journal 2016年第50期22卷 17869-17869页

作者： Dr. Jing Liu Meirong Cui Dr. Li Niu Dr. Hong Zhou Prof. Dr. Shusheng Zhang Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers College of Chemistry and Chemical Engineering Linyi University Linyi 276005 P.R. China Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong Shandong Normal University Jinan 250014 P.R. China

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Correction: High-performance alkaline hydrogen evolution electrocatalyzed by a Ni3N–CeO2 nanohybrid

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Inorganic Chemistry Frontiers 2019年第2期6卷 631-631页

作者： Zhaomei Sun Jiayu Zhang Junfeng Xie Xiangjiang Zheng Min Wang Xuemei Li Bo Tang College of Chemistry Chemical Engineering and Materials Science Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong Key Laboratory of Molecular and Nano Probes Ministry of Education Institute of Molecular and Nano Science Shandong Normal University Jinan 250014 Shandong China Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers School of Chemistry and Chemical Engineering Linyi University Linyi 276005 Shandong China

Correction for ‘High-performance alkaline hydrogen evolution electrocatalyzed by a Ni3N–CeO2 nanohybrid’ by Zhaomei Sun et al., Inorg. Chem. Front., 2018, 5, 3042–3045.

Correction for ‘High-performance alkaline hydrogen evolution electrocatalyzed by a Ni₃N–CeO₂ nanohybrid’ by Zhaomei Sun et al., Inorg. Chem. Front., 2018, 5, 3042–3045.

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Polyphenol-Inspired Facile Construction of Smart Assemblies for ATP- and pH-Responsive Tumor MR/Optical imaging and Photothermal Therapy

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Small (Weinheim an der Bergstrasse, Germany) 2017年第20期13卷 2017 May;13(20)页

作者： Xiao-Rong Song Shi-Hua Li Jiayong Dai Liang Song Guoming Huang Ruhui Lin Juan Li Gang Liu Huang-Hao Yang The Key Lab of Analysis and Detection Technology for Food Safety of the MOE State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry Fuzhou University Fuzhou 350108 China. Academy of Intergrative Medicine Biomedical Research Center Fujian University of Tranditional Chinese Medicine Fuzhou 350122 China. State Key Laboratory of Molecular Vaccinology and Molecular Diagnostic Center for Molecular Imaging and Translational Medicine School of Public Health Xiamen University Xiamen 361005 China.

Smart assemblies have attracted increased interest in various areas, especially in developing novel stimuli-responsive theranostics. Herein, commercially available, natural tannic acid (TA) and iron oxide nanoparticles (Fe O NPs) are utilized as models to construct smart magnetic assemblies based on polyphenol-inspired NPs-phenolic self-assembly between NPs and TA. Interestingly, the magnetic assemblies can be specially disassembled by adenosine triphosphate, which shows a stronger affinity to Fe O NPs than that of TA and partly replaces the surface coordinated TA. The disassembly can further be facilitated by the acidic environment hence causing the remarkable change of the transverse relaxivity and potent "turn-on" of fluorescence (FL) signals. Therefore, the assemblies for specific and sensitive tumor magnetic resonance and FL dual-modal imaging and photothermal therapy after intravenous injection of the assemblies are successfully employed. This work not only provides understandings on the self-assembly between NPs and polyphenols, but also will open new insights for facilely constructing versatile assemblies and extending their biomedical applications.

关键词： fluorescence magnetic properties photothermal therapy self-assembly stimuli-responsive

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