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surface plasmon decorated InGaO deep-UV photodetector array for image sensing and water quality monitoring via highly effective hot electron excitation and interfacial injection

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Science China(Technological Sciences) 2024年第8期67卷 2449-2460页

作者： SHU LinCong SHA ShuLin XI ZhaoYing LI Lei YAO SuHao ZHANG JiaHan JI XueQiang ZHANG ShaoHui BIAN Ang JIANG MingMing GUO YuFeng TANG WeiHua LIU Zeng Innovation Center of Gallium Oxide Semiconductor(IC-GAO) College of Integrated Circuit Science and EngineeringNanjing University of Posts and TelecommunicationsNanjing 210023China School of Electronic Information Engineering Inner Mongolia UniversityHohhot 010021China College of Science MIIT Key Laboratory of Aerospace Information Materials and PhysicsNanjing University of Aeronautics and AstronauticsNanjing 211106China Collaborative Innovation Center of Advanced Microstructures School of Electronic Science and EngineeringNanjing UniversityNanjing 210093China Institute of Biological and Medical Engineering Guangdong Academy of SciencesGuangzhou 510316China School of Science Jiangsu University of Science and TechnologyZhenjiang 212100China School of Integrated Circuits Beijing University of Posts and TelecommunicationsBeijing 100876China

In addition to the plasmon-mediated resonant coupling mechanism,the excitation of hot electron induced by plasmon presents a promising path for developing high-performance optoelectronic devices tailored for various *** study introduces a sophisticated design for a solar-blind ultraviolet(UV)detector array using linear In-doped Ga_(2)O_(3) (InGaO)modulated by platinum(Pt)nanoparticles(PtNPs).The construction of this array involves depositing a thin film of Ga_(2)O_(3) through the plasmonenhanced chemical vapor deposition(PECVD)***,PtNPs were synthesized via radio-frequency magnetron sputtering and annealing *** performance of these highly uniform arrays is significantly enhanced owing to the generation of high-energy hot *** process is facilitated by non-radiative decay processes induced by ***,the array achieves maximum responsivity(R)of 353 mA/W,external quantum efficiency(EQE)of 173%,detectivity(D*)of approximately 10~(13)Jones,and photoconductive gain of *** addition,the standard deviation for photocurrent stays below17%for more than 80%of the array units within the ***,the application of this array extends to photon detection in the deep-UV(DUV)*** includes critical areas such as imaging sensing and water quality *** leveraging surface plasmon coupling,the array achieves high-performance DUV photon *** approach enables a broad spectrum of practical applications,underscoring the significant potential of this technology for the advancement of DUV detectors.

关键词： InGaO PECVD surface plasmon solar-blind UV photodetector array optoelectronic applications

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surface plasmon wave propagation along single metal wire

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Chinese Physics B 2012年第11期21卷 393-401页

作者：钟任斌刘维浩周俊刘盛纲 Terahertz Science and Technology Research Centre University of Electronic Science and Technology of China

Recently, the single metal wire （SW） has become attractive for its potential applications in the terahertz and higher frequency range. However, as the most simple and typical surface plasmon polariton （SPP） transmission line, its study seems far from enough. Many important transmission behaviours have not been explained satisfactorily from the viewpoint of physics. In this paper, making use of the modified Drude model （MDM） based on the Sommerfeld theory, the transmission behaviours of SPPs along SW are systemically investigated theoretically. Some important physical phenomena such as the mode transformation, the lifetime of the radiative mode and the resonance frequency are revealed, and their mechanisms are explored. The results obtained in the paper will facilitate a general understanding of the features and the physical essence of the SPP transmission, not only for SW itself but also for other SPP transmission lines.

关键词： surface plasmon single metal wire wave propagation

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surface plasmon polaritons in plasma-dielectric-magnetic plasma structure

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Plasma Science and Technology 2020年第10期22卷 45-51页

作者： Baojun WANG Shunshun ZHU Bin GUO Department of Physics Wuhan University of TechnologyWuhan 430070People's Republic of China

The properties of surface plasmon polaritons(SPPs) excited in the plasma-dielectric-magnetic plasma structure are investigated theoretically. Both the normal and the absorbing dispersion relations of SPPs are derived and presented for transverse-magnetic polarization. The influences of the external magnetic field, collision frequency of plasma, background material dielectric constant,and thickness on the characteristics of SPPs are explored and discussed. Results show that these factors greatly alter the properties of SPPs. The results imply that the locations and propagation length of SPPs can be tuned. In addition, the results also show that a one-way dispersion relation of SPPs can be realized in the low-frequency regions when the external magnetic field is introduced.

关键词： surface plasmon magnetic plasma dispersion relations propagation length

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surface plasmon resonance transmission filters at 1053 nm based on metallic grating with narrow slit

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Chinese Physics B 2009年第3期18卷 1029-1032页

作者：麻健勇许程刘世杰张大伟晋云霞范正修邵建达 Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Graduate school of Chinese Academy of Sciences

Metallic gratings with narrow slits can lead to special optical properties such as strongly enhancing the trans- mission and considerably strengthening the polarized effect. A narrow-band filter suitable for application in optical communication is designed by sandwiching a metallic grating between two identical dielectric films. The maximum transmission can reach 96% after optimizing the parameters of films and grating at a central wavelength of 1053 nm. It is the first time, to our knowledge, that such high transmission has been reported since the discovery of the extraordinarily high transmission through periodic holes or slits; moreover, the extremely polarized effect is also found in P mode of this symmetric grating.

关键词： metallic grating surface plasmon extraordinary transmission

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surface plasmon excitation in semitransparent inverted polymer photovoltaic devices and their applications as label-free optical sensors

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Light(Science & Applications) 2014年第1期3卷 5-12页

作者： Byoungchoo Park Soo Hong Yun Chan Youn Cho Young Chan Kim Jung Chul Shin Hong Goo Jeon Yoon Ho Huh Inchan Hwang Ku Youn Baik Young In Lee Han Sup Uhm Guang Sup Cho Eun Ha Choi Department of Electrical and Biological Physics Kwangwoon UniversitySeoul 139-701Republic of Korea Department of Electronic Materials Engineering Kwangwoon UniversitySeoul 139-701Republic of Korea

Herein,we report on surface plasmon(SP)-sensitive semitransparent inverted polymer photovoltaic(PV)devices that are based on multilayered material systems consisting of poly(3-hexylthiophene):fullerene-derivative bulk-heterojunction PV layers and thin gold or silver *** demonstrate that these PV devices allow the simultaneous generation of both electrical power and SPs on their anodes for photoexcitation just above the optical absorption edge of the PV layers,resulting not only in attenuated total reflection,but also in attenuated photocurrent generation(APG)under the SP resonance(SPR)***,we also confirm that the biomolecular interaction of biotin–streptavidin on the PV devices can be precisely detected via apparent SPR angle shifts in the APG spectra,even without the need for complex attenuated total reflection *** highlight our view that APG measurements made using these PV devices show great potential for the development of future generations of compact and highly sensitive SPR-based optical sensors.

关键词： attenuated total reflection optical sensors photocurrent generation polymer photovoltaic devices surface plasmon

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surface plasmon resonance scattering and absorption of biofunctionalized gold nanoparticles for targeted cancer imaging and laser therapy

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Science China(Technological Sciences) 2011年第9期54卷 2358-2362页

作者： GE Yun KANG Bin School of Electronics Science and Engineering Naniing University Naniing 210093 China College of Materials Science and Technology Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

The localized surface plasmon resonance of gold nanoparticles enables them to be excellent light scattering sensing reagents and efficient lignt-heat convertors for potential diagnostics and *** this work,gold nanoparticles of 15 nm in size were synthesized and conjugated with a kind of arginine-glycine-aspartic acid peptide(RGD)to target the cancer *** a conventional dark field microscope,the scattering images from normal and cancer cells are very *** a few of gold nanoparticles bind to the membrane of normal cells due to nonspecific *** for cancer cells,the concentration of gold nanoparticles inside cancer cells is much higher than that inside normal cells,showing a strong light scattering *** exposing these cells to an external laser irradiation,cancer cells were selectively destructed because of the heat conversion of gold nanoparticles inside them,but normal cells still kept alive due to the absence of gold nanoparticles in *** results incidated that gold nanoparticles might be potential contrast reagents for targeted cancer imaging and laser therapy.

关键词： surface plasmon gold nanoparticles cancer imaing laser therapy

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Position-dependent property of resonant dipole-dipole interaction mediated by localized surface plasmon of an Ag nanosphere

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Chinese Physics B 2015年第2期24卷 158-164页

作者：许丹王小云黄勇刚欧阳仕粮何海龙何浩 College of Physics Mechanical and Electrical EngineeringJishou University

We use the photon Green-function method to study the quantum resonant dipole-dipole interaction（RDDI） induced by an Ag nanosphere（ANP）.As the distance between the two dipoles increases,the RDDI becomes weaker,which is accompanied by the influence of the higher-order mode of the ANP on RDDI declining more quickly than that of the dipole *** a broad frequency range（above 0.05 eV）,the transfer rate of the RDDI is nearly constant since the two dipoles are fixed at the proper *** addition,this phenomenon still exists for slightly different radius of the *** find that the frequency corresponding to the maximum transfer rate of RDDI exhibits a monotonic decrease by moving away one dipole as the other dipole and the ANP are kept *** addition,the radius of ANP has little effect on *** the two dipoles are far from the ANP,the maximum transfer rate of the RDDI takes place at the frequency of the dipole *** contrast,when the two dipoles are close to the ANP,the higher-order modes come into effect and they will play a leading role in the RDDI if they match the transition frequency of the *** results may be used in a biological detector and have a certain guiding significance for further application.

关键词： quantum resonant dipole-dipole interaction photonic Green function surface plasmon

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Effect of surface plasmon coupling with radiating dipole on the polarization characteristics of AlGaN-based light-emitting diodes

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Chinese Physics B 2022年第7期31卷 573-578页

作者： Yi Li Mei Ge Meiyu Wang Youhua Zhu Xinglong Guo School of Information Science and Technology&Tongke School of Microelectronics Nantong UniversityNantong 226019China

The optical polarization characteristics of surface plasmon(SP)coupled Al Ga N-based light emitting diodes(LEDs)are investigated theoretically by analyzing the radiation recombination process and scattering process *** the Al_(0.5)Ga_(0.5)N/Al/Al_(2)O_(3)slab structure,the relative intensity of TE-polarized and TM-polarized spontaneous emission(SE)rate into the SP mode obviously depends on the thickness of the Al *** calculation results show that TM dominated emission will be transformed into TE dominated emission with the decrease of the Al thickness,while the emission intensities of both TE/TM polarizations will decrease *** addition,compared with TM polarized emission,TE polarized emission is easier to be extracted by SP *** the Al_(0.5)Ga_(0.5)N/Al nano-particle structure,the ratio of transmittance for TE/TM polarized emission can reach~3.06,while for the Al free structure,it is only ***,the degree of polarization of SP coupled LED can be improved by the reasonable structural design.

关键词： surface plasmon AlGaN-based light emitting diodes FDTD K-P method

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Terahertz radiation from interaction between an electron beam and a planar surface plasmon structure

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Chinese Physics B 2009年第9期18卷 3877-3882页

作者：胡旻张雅鑫鄢扬钟任斌刘盛纲 Terahertz Research Centre School of Physical ElectronicsUniversity of Electronic Science and Technology of China

The possibility of an electron beam exciting surface plasmons in conducting metal is discussed in this paper. A planar perfect-structure with subwavelength holes is proposed. The phenomenon that mimicking surface plasmon waves can be excited and amplified by an electron beam is proved theoretically and numerically. The mechanism of transmission through a subwavelength hole array is exploited to enhance the interaction between the electron beam and the mimicking surface plasmons.

关键词： surface plasmon electron beam

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Numerical analysis of surface plasmon nanocavities formed in thickness-modulated metal-insulator-metal waveguides

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Chinese Physics B 2010年第5期19卷 269-275页

作者：刘建龙林杰赵海发张岩刘树田 Department of Physics Harbin Institute of Technology School of Electrical Engineering and Automation Harbin Institute of Technology Department of Physics Capital Normal University

The enhancement characteristics of the local field in the surface plasmon nanocavities are investigated numerically. The cavity is constructed by placing a defect structure in the thickness-modulated metal-insulator-metal waveguide Bragg gratings. The characteristic impedance based transfer matrix method is used to calculate the transmission spectra and the resonant wavelength of the cavities with various geometric parameters. The finite-difference time- domain method is used to obtain the field pattern of the resonant mode and validate the results of the transfer matrix method. The calculation and simulation results reveal the existence of resonant wavelength shift and intensity variation with structural parameters, such as the modulation period of the gratings, the length and the width of the defect structure. Both numerical analysis and theoretical interpretation on these phenomena are given in details.

关键词： surface plasmon nanocavity local field enhancement

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