INORGANIC CHEMISTRY
·
2018
·
IF 4.7
Fan Sun,Zhongnan Guo,Ning Liu,Dan Wu,Jiawei Lin,Erjian Cheng,Tianping Ying,Shiyan Li,Wenxia Yuan
In this work, we report the discovery of a new Ni-based quasi-one-dimensional selenide: Cs0.9Ni3.1Se3. This compound adopts the TlFe3Te3-type structure with space group P63/m, which consists of infinite [Ni3Se3] chains with face-sharing Ni6 octahedra along the c direction. The lattice parameters are calculated as a = 9.26301(4) Å and c = 4.34272(2) Å, with the Ni–Ni distance in the ab plane as 2.582(3) Å, suggesting the formation of a Ni–Ni metallic bond in this compound. Interestingly, it has been found that Cs0.9Ni3.1Se3 is nonstoichiometric, which is different from the other TlFe3Te3-type phases reported so far. Structure refinement shows that the extra Ni atom in the structure may occupy the 2c site, together with Cs atoms. Cs0.9Ni3.1Se3 shows metallic behavior with monotonously decreased resistivity with temperatures from 300 to 0.5 K. Measurements on the magnetic susceptibility display a spin-glass state below 7 K. The specific heat curve gives a Sommerfeld coefficient of 14.6 mJ·K–2·mol–1 and a Debye temperature of 143.6 K. The discovery of this new compound enriches the diversity of low-dimensional materials in a transition-metal-based family and also sheds light on the structure–property relationship of this system.
研究领域:
凝聚态物理
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材料科学
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DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2020
·
IF 7.216
Tao Jiang,Peng Lu,Meng-Jiao Xu,Jian-Dong Lin,Yong-Mei Liu,Yong Cao,He-Yong He
We describe herein that the quasi-one-dimensional confinement effect of functionalized nanoporous supports is particularly advantageous for boosting formic acid (FA) dehydrogenation efficiency over palladium nanoparticles (NPs). Benefiting from their unique structural merits that lead to significant lowering of the entropic barrier for FA activation, the Pd NPs interiorly located on the amino-modified MCM-41 offer the promise of more than an order of magnitude speedup of the initial activity in H 2 production from FA over their exterior analogs. Under mild and additive-free conditions, ultrafine Pd NPs confined in amino-modified MCM-41 channels exhibit an initial turnover frequency as high as 46,677 h −1 and a turnover number up to 1,060,000 at 60°C. In conjunction with the enhancement and robust performance for efficient regeneration of FA via CO 2 hydrogenation, the presented approach greatly contributes to the development of FA-based hydrogen storage and related technologies as viable means of enabling sustainable future energy prospects.
研究领域:
化学
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能源材料科学
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DOI
高影响因子
Small
·
2024
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IF 13
Lei Zhang,Jianzha Zheng,Cong Liu,Yifei Xie,Hanyu Lu,Qinrong Luo,Yulong Liu,Huidong Yang,Kai Shen,Yaohua Mai
Antimony selenosulfide (Sb 2 (S,Se) 3 ) is an emerging quasi-1D photovoltaic semiconductor with exceptional photoelectric properties. The low-symmetry chain structure contains complex defects and makes it difficult to improve electrical properties via doping method. This article reports a doping strategy to enhance the efficiency of Sb 2 (S,Se) 3 solar cells by using alkali halide (CsI) as the hydrothermal reaction precursor. It is found that the Cs and I ions are effectively doped and atomically coordinate with Sb ions and S/Se ions. The CsI-doping Sb 2 (S,Se) 3 absorbers exhibit enhanced grain morphologies and reduced trap densities. The consequential CsI-doping Sb 2 (S,Se) 3 based solar cells demonstrate favorable band alignment, suppressed carrier recombination, and improved device performance. An efficiency as high as 10.05% under standard AM1.5 illumination irradiance is achieved. This precursor-based alkali halide doping strategy provides a useful guidance for high-efficiency antimony selenosulfide solar cells.
研究领域:
材料科学
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光伏技术
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半导体物理
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DOI
PubMed
高影响因子
Science China-Materials
·
2022
·Vol. 66
·期 4
·1460-1470
·
IF 8.64
Cheng Yufei,Sun Qian,Li Qiujie,Zhang Wenwan,Liu Enzhou,Fan Jun,Xie Haijiao,Miao Hui,Hu Xiaoyun
Antimony selenide (Sb 2 Se 3 ) is a narrow-band-gap semiconductor that has been increasingly used as an excellent light-harvesting material in photoelectrocatalysis. The unique connections of the one-dimensional (Sb 4 Se 6 ) n ribbon structural units determine the high anisotropy of their carrier transport. In this study, a reduced graphene oxide (rGO)-modified quasi-one-dimensional Sb 2 Se 3 @In 2 S 3 light-trapping heterostructure was successfully constructed by vapor transport deposition followed by an in situ hydrothermal method. The results showed that the thickness of the in situ grown non-layered In 2 S 3 nanosheets was significantly reduced from 30 to 10 nm under the space-confinement effect of rGO, facilitating the construction of light-trapping nanostructures and increasing the electrochemically active surface area of the photoelectrode. The quasi-one-dimensional Sb 2 Se 3 @In 2 S 3 -rGO nanorod photoelectrode achieved a higher photocurrent density (1.169 mA cm −2 ), which was 2 and 16 times higher than that of Sb 2 Se 3 @In 2 S 3 and pristine Sb 2 Se 3 , respectively. The ultrathin In 2 S 3 nanosheets were co-modified with rGO nanosheets to fabricate a brush-like composite photoelectrode that exhibited favourable stability with an average hydrogen production rate of 16.59 µmol cm −2 h −1 under neutral conditions. The experimental results and theoretical calculations both showed that the significant improvement in photoelectrochemical performance can be perfectly explained by the type-II heterojunction mechanism. This study provides a new exploration to design rGO-modified composite photoelectrodes for photoelectrochemical applications.
研究领域:
材料科学
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光电化学
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DOI
高影响因子
NANO LETTERS
·
2025
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IF 9.1
Liu Yang,Dong Wang,Zhen Hu,Zhuo Dong,Yan Zhang,Keqin Tang,Pengdong Wang,Junrong Zhang,Cheng Chen,Xingang Hou,Jie Li,Qiang Yu,Junyong Wang,Lin Wang,Kai Zhang
Topological surface states (TSS) in certain low-dimensional materials impart gapless band structure, massless quasiparticles, and nonlinear optical behavior, enabling distinct advantages for applications in low-energy photon detection. Herein, we develop a quasi-one-dimensional (quasi-1D) transition metal chalcogenide material, Ta2PdSe6, with robust TSS, which exhibits a gapless band structure protected by spin-momentum locking and time-reversal symmetry, alongside exceptional transport properties, including a high carrier mobility exceeding 104 cm2·V–1·s–1. The quasi-1D chain-like structure induces pronounced anisotropy and significantly reduces carrier scattering, further enhancing transport efficiency. Benefiting from these unique characteristics, the Ta2PdSe6-based terahertz (THz) detectors demonstrate outstanding performance with responsivity exceeding 3.63 A·W–1, a noise equivalent power of 7.4 pW·Hz–1/2 at 0.28 THz, ultrafast response speed of 1.15 μs, and an exceptional photocurrent anisotropic ratio of 68.3. These findings highlight the significant potential of strong TSS in emerging materials to achieve high-performance and multifunctional THz detection.
研究领域:
凝聚态物理
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材料科学
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光学工程
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DOI
PubMed
高影响因子
Advanced Science
·
2024
·Vol. 11
·期 33
·2403635
·
IF 14.3
Zhiyi Gao,Dan Xu,Shengbin Li,Dongdong Zhang,Ziyin Xiang,Haifeng Zhang,Yuanzhao Wu,Yiwei Liu,Jie Shang,Run-Wei Li
Highly performance flexible strain sensor is a crucial component for wearable devices, human-machine interfaces, and e-skins. However, the sensitivity of the strain sensor is highly limited by the strain range for large destruction of the conductive network. Here the quasi-1D conductive network (QCN) is proposed for the design of an ultra-sensitive strain sensor. The orientation of the conductive particles can effectively reduce the number of redundant percolative pathways in the conductive composites. The maximum sensitivity will reach the upper limit when the whole composite remains only “one” percolation pathway. Besides, the QCN structure can also confine the tunnel electron spread through the rigid inclusions which significantly enlarges the strain-resistance effect along the tensile direction. The strain sensor exhibits state-of-art performance including large gauge factor (862227), fast response time (24 ms), good durability (cycled 1000 times), and multi-mechanical sensing ability (compression, bending, shearing, air flow vibration, etc.). Finally, the QCN sensor can be exploited to realize the human-machine interface (HMI) application of acoustic signal recognition (instrument calibration) and spectrum restoration (voice parsing).
研究领域:
材料科学
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柔性电子
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传感器技术
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产品关联
DOI
PubMed
高影响因子
iScience
·
2023
·
IF 5.8
Jie Li,Junrong Zhang,Junwei Chu,Liu Yang,Xinxin Zhao,Yan Zhang,Tong Liu,Yang Lu,Cheng Chen,Xingang Hou,Long Fang,Yijun Xu,Junyong Wang,Kai Zhang
Summary As an elemental semiconductor, tellurium (Te) has been famous for its high hole-mobility, excellent ambient stability and topological states. Here, we realize the controllable synthesis of horizontal Te nanoribbon arrays (TRAs) with an angular interval of 60°on mica substrates by physical vapor deposition strategy. The growth of Te nanoribbons (TRs) is driven by two factors, where the intrinsic quasi-one-dimensional spiral chain structure promotes the elongation of their length; the epitaxy relationship between [110] direction of Te and [110] direction of mica facilitates the oriented growth and the expansion of their width. The bending of TRs which have not been reported is induced by grain boundary. Field-effect transistors based on TRs demonstrate high mobility and on/off ratio corresponding to 397 cm 2 V −1 s −1 and 1.5×10 5 , respectively. These phenomena supply an opportunity to deep insight into the vapor-transport synthesis of low-dimensional Te and explore its underlying application in monolithic integration.
研究领域:
材料科学
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半导体物理
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产品关联
DOI
PubMed
高影响因子
CHEMISTRY OF MATERIALS
·
2021
·
IF 9.811
Zhongnan Guo,Fan Sun,Danilo Puggioni,Yubo Luo,Xiaotong Li,Xiuquan Zhou,Duck Young Chung,Erjian Cheng,Shiyan Li,James M. Rondinelli,Wenxia Yuan,Mercouri G. Kanatzidis
Metal cluster compounds have garnered renewed interest in the search for novel superconductors and topological semimetals owing to structural instabilities of metal-cluster geometries and broken symmetries. Here we synthesized needle-like crystals of the V-cluster-based quasi-one-dimensional (Q1D) materials AV3Q3Oδ (A = K, Rb, Cs, Q = Se, Te) which can also be viewed as being composed of parallel nanowires. We examine how changes in their average and local structure control their electronic properties. All compounds crystallize in the TlFe3Te3-type structure (P63/m space group) with infinite (V3Q3)− double-walled columnar chains separated by A+ cations. Our single-crystal and synchrotron powder diffraction studies indicate oxygen atoms partially occupy the center site of the V6 octahedral metal cluster cages in KV3Te3O0.33, RbV3Te3O0.32, and CsV3Te3O0.35, whereas KV3Se3 is structurally oxygen-free. Our synchrotron X-ray pair distribution function (PDF) analyses indicate that the oxygen-free V6 cluster octahedra in KV3Se3 are highly distorted perpendicular to the chain direction even at room temperature, reducing the symmetry of the average structure from hexagonal P63/m to monoclinic P21/m. Our theoretical calculation supports this P21/m distortion and suggests the structure further distorts to P21 or P21/c at lower temperatures. In contrast, the oxygen-centered V-cluster in KV3Te3O0.33 exhibits a V3-triangle-trimerization along the chain direction. This feature is discernible from the local PDF and is consistent with lattice dynamical calculations based on density functional theory. Resistivity measurements indicate that KV3Se3 exhibits metallic behavior, whereas a dramatic metal–semiconductor–metal transition emerges in KV3Te3O0.33, RbV3Te3O0.32, and CsV3Te3O0.35 because of oxygen disorder and changes in local structure captured from our electronic structure analyses of the Fermi surface. Our investigation of the AV3Q3Oδ family demonstrates the importance of understanding local changes in structure driven by electronic instabilities, which can guide the search for new quantum materials in other low-dimensional cluster-compound materials.
研究领域:
材料科学
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凝聚态物理
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DOI
高影响因子
Matter
·
2020
·
IF 0
Cheng Chen,Aiji Liang,Shuai Liu,Simin Nie,Junwei Huang,Meixiao Wang,Yiwei Li,Ding Pei,Haifeng Yang,Huijun Zheng,Yong Zhang,Donghui Lu,Makoto Hashimoto,Alexei Barinov,Chris Jozwiak,Aaron Bostwick,Eli Rotenberg,Xufeng Kou,Lexian Yang,Yanfeng Guo,Zhijun Wang,Hongtao Yuan,Zhongkai Liu,Yulin Chen
Topological superconductors (TSCs), with the capability to host Majorana bound states that can lead to non-Abelian statistics and application in quantum computation, have been one of the most intensively studied topics in condensed matter physics recently. To date, only a few compounds have been proposed as candidates of intrinsic TSCs, such as doped topological insulator Cu x Bi 2 Se 3 and iron-based superconductor FeTe 0.55 Se 0.45 . Here, by carrying out synchrotron- and laser-based angle-resolved photoemission spectroscopy, we systematically investigated the electronic structure of a quasi-one-dimensional superconductor TaSe 3 and identified the non-trivial topological surface states. In addition, our scanning tunneling microscopy study revealed a clean cleaved surface with a persistent superconducting gap, proving it suitable for further investigation of potential Majorana modes. These results prove TaSe 3 as a stoichiometric TSC candidate that is stable and exfoliable and therefore a promising platform for the study of rich novel phenomena and application potentials.
研究领域:
凝聚态物理
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拓扑量子材料
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超导电子学
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表面科学
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量子计算
✓ 已验证
DOI
Matter
·
2025
·
IF 17.5
Chen Li,Yiming Wang,Chengyu Li,Ke Liu,Jiajia Feng,Haoming Cheng,En Chen,Dequan Jiang,Qiaoxin Zhang,Ting Wen,Binbin Yue,Wenge Yang,Yonggang Wang
Exploring potential superconductivity in magnetic compounds stands as a pivotal and challenging frontier issue. Low-dimensional materials, with their distinctive quantum confinement effects, provide an unparalleled platform for probing such quantum phenomena. Here, we present the discovery of pressure-induced superconductivity in novel antiferromagnetic CrNbSe 5 microwires with a distinctive quasi-one-dimensional structure. Under compression, CrNbSe 5 exhibits superconductivity at 15.0 GPa accompanied by carrier-type switching. The superconducting transition temperature reaches a maximum of 6.0 K at 34.2 GPa. Detailed structural analyses and theoretical calculations corroborate the quantum effects arising from Lifshitz transitions. Additionally, phonon softening and enhanced interchain interactions facilitate pressure-induced superconductivity. These findings offer critical insights into the mechanisms underlying pressure-induced superconductivity and its interplay with structural and electronic instabilities, accelerating the discovery of exotic quantum phenomena in low-dimensional van der Waals magnetic materials.
研究领域:
凝聚态物理
·
低维材料科学
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强关联电子系统
·
量子材料
·
高压物理学
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磁性与超导
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纳米结构材料
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产品关联
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
Xu Bin,Li Yawen,Hong Peibin,Zhang Peijie,Han Jiang,Xiao Zewen,Quan Zewei
Hybrid metal halides represent a novel type of semiconductor light emitters with intriguing excitonic emission properties, including free exciton emission and self-trapped exciton emission. Achieving precise control over these two excitonic emissions in hybrid metal halides is highly desired yet remains challenging. Here, the complete transformation from intrinsically broadband self-trapped exciton emission to distinctively sharp free exciton emission in a quasi-one-dimensional hybrid metal halide (C 2 H 10 N 2 ) 8 [Pb 4 Br 18 ]·6Br with a ribbon width of n = 4, is successfully achieved based on high-pressure method. During compression, pressure-induced phonon hardening continuously reduces exciton–phonon coupling, therefore suppressing excitonic localization and quenching the original self-trapped exciton emission. Notably, further compression triggers excitonic delocalization to induce intense free exciton emission, accompanied with reduced carrier effective masses and improved charge distribution. Controlled high-pressure investigations indicate that the ribbon width of n > 2 is necessary to realize excitonic delocalization and generate free exciton emissions in similar quasi-one-dimensional hybrid metal halides. This work presents an important photophysical process of excitonic transitions from self-trapped exciton emission to free exciton emission in quasi-one-dimensional hybrid metal halides without chemical regulation, promoting the rational synthesis of hybrid metal halides with desired excitonic emissions.
研究领域:
材料科学
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光电学
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半导体物理
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DOI
高影响因子
InfoMat
·
2021
·Vol. 4
·期 3
·e12258
·
IF 25.405
Ruixue Bai,Tao Xiong,Jinshu Zhou,Yue-Yang Liu,Wanfu Shen,Chunguang Hu,Faguang Yan,Kaiyou Wang,Dahai Wei,Jingbo Li,Juehan Yang,Zhongming Wei
Low-dimensional semiconductors with in-plane anisotropy and narrow bandgap have been extensively applied to polarized detection in the near-infrared (NIR) region. However, the narrow bandgap can cause noise owing to the high dark current in photodetectors. This article reports quasi-1D ZrGeTe 4 nanoribbon-based photodetectors with low dark current and broadband polarization detection. The photodetector was fabricated by evaporating 50-nm-thick Au electrodes on a ZrGeTe 4 nanoribbon. Benefiting from the photovoltaic characteristics in the ZrGeTe 4 nanoribbon and Au electrodes, these photodetectors can operate without bias voltage, with decreased dark current, and improved device performance. Furthermore, the quasi-1D ZrGeTe 4 nanoribbon-based photodetectors demonstrate a polarization sensitivity in a broadband from visible (VIS) to the NIR region, such as a high photoresponsivity of 625.65 mA W −1 , large external quantum efficiency of 145.9% at 532 nm, and photocurrent anisotropy ratio of 2.04 at 1064 nm. They exhibit a novel perpendicular optical reversal of 90° in polarization-sensitive photodetection, angle-resolved absorption spectra, and azimuth-dependent reflectance difference microscopy (ADRDM) from VIS to the NIR region, as opposed to other nanoribbon-based polarization-sensitive photodetectors. This work paves the way for utilizing photovoltaic photodetectors based on low-dimensional materials for broad-spectrum polarized photodetection.
研究领域:
材料科学
·
光电子学
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光子学
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产品关联
DOI
高影响因子
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