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| 1 | Heterostructures in two-dimensional colloidal metal chalcogenides:Synthetic fundamentals and applications显示文摘As a new class of two-dimensional materials, two-dimensional (2D) heterostructures constructed from metal chalcogenides (MCs) have been gaining tremendous attention due to their unprecedented physical and chemical phenomena, mainly originated from their distinct structural features such as composition, architecture type, spatial arrangement of each component, crystal structure, exposed facet and interface, dimensionality in their heterostructures. Towards the realization of practical applications, synthetic approaches need a rational design with a variety of architecture types including laterally-combined, vertically-aligned, and conformally-coated 2D MC heterostructures. Among various synthetic routes, solution-based synthesis is thought of as an alternative to fabrication through high-cost setups since it can control those structural features in a cheap fashion. This review presents recent progress on solution-based synthesis to produce various 2D MC heterostructures with a focus on the synthetic fundamentals in terms of thermodynamic and kinetic aspects related to the growth mechanism. Four different synthetic approaches are reviewed: seeded growth, cation exchange reaction, colloidal atomic layer deposition, direct synthesis including one-step process and modified electrochemical method. We also provide some representative applications of 2D MC heterostructures and their hybrid composites in various fields including optoelectronics, thermoelectrics, catalysis, and battery. Finally, we offer an insight into challenges and future directions in a synthetic improvement of 2D MC heterostructures. | Yuho Min Eunmi Im Geon-Tae Hwang Jong-Woo Kim Cheol-Woo Ahn Jong-Jin Choi Byung-Dong Hahn Joon-Hwan Choi Woon-Ha Yoon Dong-Soo Park Dong Choon Hyun Geon Dae Moon | 2019 | Nano Research2019，12，8： | 6 |
| 2 | Mid-infrared chalcogenide microfiber knot resonators显示文摘A novel type of mid-IR microresonator,the chalcogenide glass(ChG)microfiber knot resonator(MKR),is demonstrated,showing easy fabrication,fiber-compatible features,resonance tunability,and high robustness.ChG micro fibers with typical diameters around 3μm are taper-drawn from As2S3 glass fibers and assembled into MKRs in liquid without surface damage.The measured Q factor of a typical 824μm diameter ChG MKR is about 2.84×104 at the wavelength of 4469.14 nm.The free spectral range(FSR)of the MKR can be tuned from2.0 nm(28.4 GHz)to 9.6 nm(135.9 GHz)by tightening the knot structure in liquid.Benefitting from the high thermal expansion coefficient of As2S3 glass,the MKR exhibits a thermal tuning rate of 110 pm·℃^-1 at the resonance peak.When embedded in polymethyl methacrylate(PMMA)film,a 551μm diameter MKR retains a Q factor of 1.1×10^4.The ChG MKRs demonstrated here are highly promising for resonator-based optical technologies and applications in the mid-IR spectral range. | YU XIE DAWEI CAI HAO WU JING PAN NING ZHOU CHENGUANG XIN SHAOLIANG YU PAN WANG XIAOSHUN JIANG JIANRONG QIU XIN GUO LIMIN TONG | 2020 | Photonics Research2020，8，4： | 3 |
| 3 | Neutron irradiation-induced effects on the reliability performance of electrochemical metallization memory devices显示文摘In this work,electrochemical metallization memory(ECM)devices with an Ag/AgInSbTe(AIST)/amorphous carbon(a-C)/Pt structure were irradiated with 14 MeV neutrons.The switching reliability performance before and after neutron irradiation was compared and analyzed in detail.The results show that the irradiated memory cells functioned properly,and the initial resistance,the resistance at the low-resistance state(LRS),the RESET voltage and the data retention performance showed little degradation even when the total neutron fluence was as high as 2.5×1011 n/cm2.Other switching characteristics such as the forming voltage,the resistance at the high-resistance state(HRS),and the SET voltage were also studied,all of which merely showed a slight parameter drift.Irradiation-induced Ag ions doping of the a-C layer is proposed to explain the damaging effects of neutron irradiation.The excellent hard characteristics of these Ag/AIST/a-C/Pt-based ECM devices suggest potential beneficial applications in the aerospace and nuclear industries. | Ye Tao Xuhong Li Zhongqiang Wang Gang Li Haiyang Xu Xiaoning Zhao Ya Lin Yichun Liu | 2021 | Journal of Semiconductors2021，42，1： | 2 |
| 4 | Nonvolatile waveguide transmission tuning with electrically-driven ultra-small GST phase-change material显示文摘Low-power reconfigurable optical circuits are highly demanded to satisfy a variety of different applications. Conventional electro-optic and thermo-optic refractive index tuning methods in silicon photonics are not suitable for reconfiguration of optical circuits due to their high static power consumption and volatility. We propose and demonstrate a nonvolatile tuning method by utilizing the reversible phase change property of GST integrated on top of the silicon waveguide. The phase change is enabled by applying electrical pulses to the lm-sized GST active region in a sandwich structure. The experimental results show that the optical transmission of the silicon waveguide can be tuned by controlling the phase state of GST. | Hanyu Zhang Linjie Zhou Jian Xu Ningning Wang Hao Hu Liangjun Lu B. M. A. Rahman Jianping Chen | 2019 | Science Bulletin2019，64，11： | 2 |
| 5 | Optical properties of amorphous thin film of Se-Te-Ag system prepared by using thermal evaporation technique | Madhu MISHRA Rashmi CHAUHAN Anju KATIYAR K.K.SRIVASTAVA | 2011 | Progress in Natural Science:Materials International2011，21，1： | 1 |
| 6 | Rare-earth-incorporated low-dimensional chalcogenides: Dry-method syntheses and applications显示文摘Chalcogenide thin films incorporating rare-earth (RE) elements with applicationsin optics, electronics, and magnetics have received considerable attention.Aiming at growing pure chalcogenides, dry-method syntheses have beendeveloped. In this review, we summarize the progress thus far on lowdimensionalRE-based chalcogenides (RECs), covering fabrication methods,structures, and applications. This review also provides the summary and perspectivesof the challenges of fabrication and opportunities on the applicationof RECs in the future. | Zheshan Zhang Hongyang Zhao Chao Zhang Feng Luo Yaping Du | 2020 | InfoMat2020，2，3： | 1 |
| 7 | Phase Matching Achieved by Bandgap Widening in Infrared Nonlinear Optical Materials[ABa_(3)Cl_(2)][Ga_(5)S_(10)](A=K,Rb,and Cs)显示文摘Large nonlinear optical(NLO)coefficient(d_(ij)),high laser damage threshold(LDT),and phase matching(PM)are crucial for the practical applications of IR NLO crystals.A great number of IR NLO materials with high dij have been explored,but many of them suffer from non-PM,which dramatically decreases their ultimate NLO output efficiencies.To settle this problem,we have developed a new strategy involving modulating normal dispersion via bandgap(E_(g))widening to achieve PM in this work.We synthesized successfully three new wide E_(g)(∼4.0 eV)IR NLO salt-inclusion sulfides[ABa_(3)Cl_(2)][Ga_(5)S_(10)](A=K,1;Rb,2;and Cs,3)with PM behaviors,mainly ascribed to the PM cut-off wavelength blue shift that originated from the wide Eg values,with less contribution from birefringence enhancement.All the compounds possessed large second-harmonic-generation(SHG)efficiency(∼1×AgGaS_(2))and hitherto the highest LDTs(188–200 MW/cm^(2),at 1.06μm,10 ns pulse width)for known chalcogenides with SHG efficiencies comparable to that of commercial silver gallium sulfide(AgGaS_(2))crystal. | Bin-Wen Liu Hui-Yi Zeng Xiao-Ming Jiang Guo-Cong Guo | 2021 | CCS Chemistry2021，3，3： | 1 |
| 8 | Predicting 2D silicon allotropes on SnS2显示文摘稳定性和半导体的分层的 metal-chalcogenide 混合物上的二维的硅同素异形体的结构、电子的性质上的第一原则研究,也就是, SnS 2, 被执行。在二维的硅层之间的相互作用,当 silicene,和分层的 SnS 2 模板被分析 silicene 的不同配置调查,通常知道。计算热力学的阶段图建议 SnS 2 上的 silicene 的最稳定的配置属于结构的一个家庭, Si 原子放了在三架不同飞机上;所谓的哑铃 silicene。这特别哑铃 silicene 结构甚至在 500 K 或作为薄片层的温度在 SnS 2 上保存它的原子配置(即, silicene 簇由 H 原子终止了) ,由于在 silicene 和 SnS 2 层之间的弱相互作用。显著地,一个电场能被用来在最后改变它的电子行为从的 SnS 2, 上调节 silicene 层的乐队差距对半导体(半) 金属性。SnS 2 上的 silicene 的稳定性为 silicene 的集成是很有希望的到半导体或绝缘的底层上。silicene/SnS 2 货车 der 墙 heterostructure 的悦耳的电子行为为它在未来 nanoelectronic 设备的使用是很重要的不仅,而且作为设计在精力为这分层的混合物的使用铺平道路的分层的 SnS 2, 的巨响差距的一条成功的途径收获应用。 | Emilio Scalise Michel Houssa | 2017 | Nano Research2017，10，5： | 1 |
| 9 | Experimental and numerical investigation of mid-infrared laser in Pr^(3+)-doped chalcogenide fiber显示文摘We report on a chalcogenide glass fiber doped with Pr^(3+) that can be used for commercialized 1.5-μm and 2-μm laser excitations by emitting broadband 3 μm–5.5 μm fluorescence, which is extruded into a preform and then drawn into a step-index fiber. The spectroscopic properties of the fiber and glass are reported, and the mid-infrared fiber lasers are also numerically investigated. Cascade lasing is employed to increase the inversion population of the upper laser level. The particle swarm approach is applied to optimize the fiber laser parameters. The output power can reach 1.28 W at 4.89-μm wavelength, with a pump power of 5 W, excitation wavelength at 2.04 μm, Pr^(3+) ion concentration at 4.22 × 10^(25) ions/m^3,fiber length at 0.94 m, and fiber background loss at 3 dB/m. | 陈华 夏克伦 刘自军 王训四 章向华 许银生 戴世勋 | 2019 | Chinese Physics B2019，28，2： | 1 |
| 10 | Stimulated Brillouin scattering by the interaction between different-order optical and acoustical modes in an As2Se3 photonic crystal fiber显示文摘Brillouin gain spectra(BGS)in an As2Se3 photonic crystal fiber(PCF)are investigated numerically.The profiles of the BGS are simulated by calculating the characteristics of different-order optical and acoustic waves in the PCFs with different core diameters.For the small-core PCF,there are two peaks in BGS,but there is only one peak for the large-core PCF.We also reveal that in the small-core PCF,the difference of Brillouin frequency shift between the LP01 and LP11 modes is obvious,while it is not obvious in the large-core PCF.The Brillouin threshold increases with the core diameter increasing. | 高伟清 陈亮 蒋文辉 张正雄 张秀 高攀云 谢康 张维 周勇 廖梅松 铃木健伸 大石泰丈 | 2020 | Chinese Optics Letters2020，18，1： | 1 |
| 11 | Photo-induced optical changes in Ge_xAs_(40)Se_(60-x) thin films | Rashmi CHAUHAN Amit Kumar SRIVASTAVA Arvind TRIPATHI Krishna Kant SRIVASTAVA | 2010 | Progress in Natural Science:Materials International2010，20，1： | 1 |
| 12 | A perspective of chalcogenide semiconductor-noble metal nanocomposites through structural transformations显示文摘Intense efforts have been devoted to the synthesis of heterogeneous nanocomposites consisting of chalcogenide semiconductors and noble metals,which usually exhibit enhanced properties owing to the synergistic effect between their different material domains.Tailoring the structure of the metal domains in the nanocomposites may lead to further improvements of its performance for a given application.This review therefore highlights the strategies based on a structural conversion process for the fabrication of nanocomposites consisting of chalcogenide semiconductors and noble metals with various internal structures,e.g.,hollow or cage-bell.This strategy relies on a unique inside-out diffusion phenomenon of Ag in core-shell nanoparticles with Ag residing at core or inner shell region.In the presence of sulfur or selenium precursors,the diffused Ag are converted into Ag2S or Ag2Se,which is connected with the remaining noble metal parts,forming nanocomposites consisting of silver chalcogenide and noble metal nanoparticles with hollow or cage-bell structures.We would focus on the introduction of the fundamentals,principles,electrocatalytic applications as well as perspectives of the chalcogenide semiconductor-noble metal nanocomposites derived from their core-shell precursors so as to provide the readers insights in designing efficient nanocomposites for electrocatalysis. | Danye Liu Linlin Xu Jianping Xie Jun Yang | 2019 | Nano Materials Science2019，1，3： | 1 |
| 13 | Spatiotemporal modeling of mid-infrared photoluminescence from terbium(Ⅲ) ion doped chalcogenide-selenide multimode fibers显示文摘A numerical model was developed to study the time dynamics of photo luminescence emitted by Tb^3+doped multimode chalcogenide-selenide glass fibers pumped by laser light at approximately 2μm.The model consists of a set of partial differential equations(PDEs),which describe the temporal and spatial evolution of the photon density and level populations within the fiber.In order to solve numerically the PDEs a method of lines was applied.The modeling parameters were extracted from measurements and from data available in the literature.The numerical results obtained support experimental observations.In particular,the developed model reproduces the discrepancies that are observed between the photoluminescence decay curves obtained from different points along the fiber.The numerical analysis was also used to explain the source of these discrepancies. | Slawomir Sujecki Lukasz Sojka Zhuoqi Tang Dinuka Jayasuriya David Furniss Emma Barney Trevor Benson Angela Seddon | 2019 | Journal of Rare Earths2019，37，11： | 0 |
| 14 | Copper-sulfide cluster assembled architecture via in situ reaction显示文摘A new copper-thiolate cluster assembled framework[Cu2(μ4-SCH3)Cl]n(1),has been solvothermally synthesized through in situ reaction viz.,in situ ligand generation and metal reduction.Compound 1 represents the first 3 D framework based on Atlas-sphere functionalized by singleμ2-Cl groups.DOS calculation reveals the interaction of electronic structures.It is found that the HOMO is mainly distributed on Cl,Cu and S bonding orbitals,while the LUMO is dominated by Cu-Cl antibonding orbitals. | Hailiang Hu Huan Yang Xiuyan Yang Ran Wang Lan Zhou Yi Dai Ningning Ji Huanjiang Wang Zhiqiang Shi Guoyong Zhou Baokuan Chen Yingchun Luo Chaozheng He | 2020 | Chinese Chemical Letters2020，31，12： | 0 |
| 15 | FORMATION AND SOME PROPERTIES OF THE As_2Te_3-PbTe-XI_2(X=Pb,Hg) CHALCOHALIDE GLASSES显示文摘The As2Te3-based chalcogenide-halide glasses,which are strong candidates for infrared optical fibers,are studied.This paper investigates the glassforming regions of two quasi-ternary As2Te3-based systems.The glass-forming abilities are studied by differential thermal analysis(DTA).For the studied compositions,the glass transition temperatures (Tg) of As2Te3-PbTeHgI2 glasses are higher than those of As2Te3-PbTe-PbI2 glasses and As2Te3-HgI2 glasses.With a wider infrared transmission range and the improvements in the thermal properties of the HgI2 doped glasses, As2Te3-based glasses may lead to far-IR optical fiber development. | 张久明 | 2000 | Journal of Wuhan University of Technology(Materials Science)2000，15，1： | 0 |
| 16 | Simple yet extraordinary: Super-polyhedra-built 3D chalcogenide framework of Cs_(5)Ga_(9)S_(16) with excellent infrared nonlinear optical performance显示文摘Non-centrosymmetric chalcogenides are attracting considerable attention as highly promising infrared nonlinear optical (IR-NLO) candidates,but it is challenging to simultaneously achieve sufficient secondharmonic-generation coefficient (d_(eff)>0.5×AgGaS_(2)) and large energy gap (E_g>3.5 e V).In this work,a novel ternary chalcogenide,Cs_(5)Ga_(9)S_(16) with an ultra-wide E_gof 4.05 e V,has been successfully obtained.This sulfide belongs to the monoclinic space group Pn (No.7) with a novel 3D anionic[Ga_(9)S_(16)]^(5–)framework that is formed by super-polyhedral[Ga_(9)S_(23)]units through corner-sharing S atoms.Such a unique crystal structure displays desirable characteristics which indicate a promising IR-NLO candidate:favourable phase-matching feature,sufficient d_(eff)(0.7×AgGaS_(2)),ultrahigh laser-induced damage threshold (31.6×AgGaS_(2)) and broad transparent region (0.27-14.96μm).In addition,systematic theoretical studies and structural analysis suggest that the desirable IR-NLO performances can be attributed to the super-polyhedral building blocks.This finding may provide useful insight into the understanding and designing other high-performance IR-NLO candidates with super-polyhedral-built structures. | Hong Chen Mao-Yin Ran Sheng-Hua Zhou Xin-Tao Wu Hua Lin Qi-Long Zhu | 2023 | Chinese Chemical Letters2023，34，7： | 0 |
| 17 | Diverse Hf-Q Chains Existing in the Ternary Eu-Hf-Q(Q = S, Se) System显示文摘Two ternary Eu-Hf-Q(Q = S, Se) chalcogenides, EuHfSe3(1) and Eu5 Hf3 S12(2), have been synthesized by a facile solid state routine and structurally characterized by single-crystal X-ray diffraction technique. They crystallize in the orthorhombic space group Pnma(1) or hexagonal P 6 2 m(2), and diverse Hf-Q chains exist in their 3 D structures. The electronic structure of 1 is also calculated according to density functional theory. | 许倩婷 陈蔓蔓 吉沈晶 郭胜平 | 2020 | Chinese Journal of Structural Chemistry2020，39，3： | 0 |
| 18 | High-energy ion treatments of amorphous As_(40)Se_(60) thin films for optical applications显示文摘The treatment of 100 MeV Ag swift-heavy ion(SHI) irradiation with five different fluences(3 1010, 1 1011, 3 1011, 1 1012, and3 1012ions/cm2) was used to design optical and structural properties of amorphous(a-) As40Se60 chalcogenide thin films. Swanepoel method was applied on transmission measurements to determine the changes in optical bandgap, Tauc parameter and linear optical parameters, i.e., linear optical absorption, extinction coefficient and linear refractive index. Dispersion of the material was determined by Wemple–DiDomenico relation.Changes in nonlinear optical parameters of third-order optical susceptibility and nonlinear refractive index were determined using semi-empirical relations. Changes in surface morphology of the films were investigated using SEM observation, which indicated that fluence 3 1012ions/cm2was upper threshold limit for these films for ion treatment. It is observed that optical bandgap reduces from 1.76 eV to 1.64 eV, and nonlinear refractive index increases from 1.31 10 10[esu] to 1.74 10 10[esu]. Linear refractive index initially increases from 2.80 to 3.52(for fluence3 1010ions/cm2) and then keeps decreasing. The observed changes in optical properties upon irradiation were explained in terms of structural rearrangements by Raman measurement. The study was compiled with the previous literature to propose SHI as an effective optical engineering technique to achieve desired changes according to the need of optical/photonic applications. | Rashmi Chauhan Arvind Tripathi Krishna Kant Srivastava | 2014 | Progress in Natural Science:Materials International2014，24，3： | 0 |
| 19 | Linear and nonlinear optical changes in amorphous As_2Se_3 thin film upon UV exposure | Rashmi CHAUHAN Amit Kumar SRIVASTAVA Arvind TRIPATHI Krishna Kant SRIVASTAVA | 2011 | Progress in Natural Science:Materials International2011，21，3： | 0 |
| 20 | Charge density wave order and electron-boson coupling in ternary superconductor Bi_(2)Rh_(3)Se_(2)显示文摘The newly discovered ternary chalcogenide superconductor Bi_(2)Rh_(3)Se_(2) has attracted growing attention,which provides an opportunity to explore the interplay between charge density wave(CDW)order and superconductivity.However,whether the phase transition around 240 K can be attributed to the formation of CDW remains controversial.To help resolve the debate,we study the electronic structure of Bi_(2)Rh_(3)Se_(2) by angle-resolved photoemission spectroscopy,focusing on the nature of its high-temperature phase transition around 240 K.Our measurements demonstrate that the phase transition at 240 K is a second-order CDW phase transition.Our results reveal(i)a 2×2 CDW order in Bi_(2)Rh_(3)Se_(2),accompanied by the reconstruction of electronic structure,such as band folding,band splitting,and opening of CDW gaps at and away from the Fermi level;(ii)the existence of electron-boson coupling,which is manifested as an apparent kink and peak-dip-hump structure in dispersion.Our observations thus enable us to shed light on the nature of CDW order and superconductivity in Bi_(2)Rh_(3)Se_(2). | Zi-Teng Liu Chen Zhang Qi-Yi Wu Hao Liu Bo Chen Zhi-Bo Yin Sheng-Tao Cui Zhe Sun Shuang-Xing Zhu Jiao-Jiao Song Yin-Zou Zhao Hong-Yi Zhang Xue-Qing Ye Fan-Ying Wu Shu-Yu Liu Xiao-Fang Tang Ya-Hua Yuan Yun-Peng Wang Jun He Hai-Yun Liu Yu-Xia Duan Jian-Qiao Meng | 2023 | Science China(Physics,Mechanics & Astronomy)2023，66，7： | 0 |
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