Electronic, magnetic, catalytic, and electrochemical properties of two-dimensional Janus transition metal chalcogenides

Chen, Wenzhou; Qu, Yuanju; Yao, Lingmin; Hou, Xianhua; Shi, Xingqiang; Pan, Hui

doi:10.1039/c8ta01202d

Cited by 56 publications

(42 citation statements)

References 70 publications

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“…The Janus pellicle is a novel pellicle with asymmetric properties on each part [1]. As one of the pellicle materials, Janus pellicles [2][3][4][5][6] have been widely used in electrical engineering and biology due to their special structural characteristics. For example, a PVFM-based Janus pellicle is used for a highly durable Li-O 2 battery [7], a bionic Janus composite pellicle is used for a smart response actuator [8], and a hydrophobic-hydrophilic Janus pellicle is used for the mist collector [9].…”

Section: Introductionmentioning

confidence: 99%

“…The BJP consists of top-down two layers: the top layer is a left-right structured Janus film defined as LRJF (Figure 1a) with the left and right structure and the down layer is a non-array luminescent film (NLF, Figure 1b). As shown in Figure 1a, the LRJF is the left and right structure with the left side (named as L-LRJF) comprised [Eu(BA) 3 4 and PMMA, and another part contains PANI and PMMA. This special structure of the Janus nano ribbon provides two mutually independent regions that respectively contain luminescent and conductive materials or superparamagnetism and conductive materials, and thus, the two kinds of materials are separated and concurrently assembled into one strip of Janus nanoribbon.…”

Section: Introductionmentioning

confidence: 99%

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2D double aeolotropic conductive Janus pellicle with multi-functionality then derived 3D dual-wall Janus-type tube

Qi¹,

Do²,

Xie³

et al. 2020

Express Polym. Lett.

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bilayer Janus pellicle (denoted as BJP) of concurrent double aeolotropic electrical conduction, superparamagnetism and luminescence is designed and constructed via electrospinning by using one-dimensional (1D) nanofibers and Janus nanoribbons as constructive units. The BJP comprises top-down two layers tightly bonded together. The top layer is a left-right structured Janus film which consists of Janus nanoribbons array as left and right side, and further, arrangement orientations of Janus nanoribbons in the two sides are perpendicular, leading to double aeolotropic conduction, and the conduction ratio reaches 10 8 times. The down layer is a non-array luminescent film made of nanofibers. Under the excitation by 291 and 294 nm light, red luminescence of the left side of the top layer and green luminescence of down layer in BJP are respectively achieved. The maximum saturation magnetization of the top layer can reach 21.45 (emu/g). By rolling the 2D BJP into the tube respectively with the ways of rolling from left to right or from up to down, three-dimensional (3D) dual-wall Janus-type tube with the Janus-type tube as outer or inner and the homogeneous tube as inner or outer is obtained.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

2D double aeolotropic conductive Janus pellicle with multi-functionality then derived 3D dual-wall Janus-type tube

Qi¹,

Do²,

Xie³

et al. 2020

Express Polym. Lett.

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“…The third class of 2D pS is Janus transition metal dichalcogenides (TMDs) 1,24. The Janus‐TMDs showed high photoresponsivity for photovoltaic and optoelectronic applications,25,26 potential in piezoelectronics,27–29 photocatalytic water splitting,30–35 and spintronics 36. In summary, the study of 2D pS mainly focused on photocatalytic and photovoltaic applications, etc 11,20,37,38…”

Section: Introductionmentioning

confidence: 99%

Van der Waals Contact to 2D Semiconductors with a Switchable Electric Dipole: Achieving Both n‐ and p‐Type Ohmic Contacts to Metals with a Wide Range of Work Functions

Shao

Wang

Pan

et al. 2019

Adv Elect Materials

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Two‐dimensional (2D) layered semiconductors with an intrinsic electric dipole p (pS for short), including group III2‐VI3 ferroelectrics and various Janus semiconductors, are attracting increasing attention for their exotic properties and versatile applications. Their potential in metal–semiconductor junctions is revealed. It is demonstrated that, for pS contacting to 2D metals with a wide range of work‐functions, Schottky‐barrier‐free (SB‐free) and tunable n‐ to p‐type contacts can be obtained, which is important for complementary metal‐oxide‐semiconductor logical circuitry. As expected, low (high) work‐function (WF) metals form n‐type (p‐type) SB‐free contacts to pS. What is unexpected is the behavior of medium‐WF metal‐pS junctions (MpSJ); that is, by switching the polarization in pS, both n‐ and p‐type SB‐free contacts can be obtained by the same pS contacting to metals with a wide range of WF. More importantly, MpSJ with bilayer pS can form both n‐ and p‐type SB‐free contacts. These findings, SB‐free and contact‐type‐tunable of MpSJ for metals with a wide range of work‐functions, demonstrate the great potential of 2D pS for device applications.

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“…There has recently been a surge of interest into metal chalcogenide-based materials, as these materials demonstrate a remarkable range of applications including use in magnets, catalysis, lubricants, photovoltaics, energy storage and drug delivery [1][2][3][4][5][6][7][8][9][10][11][12][13]. Among these, tin sulfide is a promising material that is suitable as an absorber layer for photovoltaic applications due to its exciting properties.…”

Section: Introductionmentioning

confidence: 99%

“…Tin is found in the second half of Group 14, and as such has two accessible oxidation states: Sn(II) and Sn(IV). As a result of a fine thermodynamic balance between divalent and tetravalent tin [18], tin sulfide can be found in three main forms: SnS [Sn(II)], Sn 2 S 3 [mixed Sn(II)/Sn(IV)] and SnS 2 [Sn(IV)]. The low energy form of SnS is an orthorhombic herzenbergite structure, adopting a Pnma space group.…”

Section: Introductionmentioning

confidence: 99%

Chemical vapor deposition of tin sulfide from diorganotin(IV) dixanthates

et al. 2018

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We report the synthesis and single-crystal X-ray characterization of diphenyltin bis(2-methoxyethylxanthate) and diphenyltin bis(iso-butylxanthate). These xanthates have been used as a single-source precursor to deposit tin chalcogenide thin films by aerosol-assisted chemical vapor deposition. Grazing incidence X-ray diffraction and scanning transmission electron microscope imaging coupled with elemental mapping show that films deposited from diphenyltin bis(iso-butylxanthate) contain orthorhombic SnS, while films deposited from diphenyltin bis(2-methoxyethylxanthate) between 400 and 575°C form a SnS/ SnO 2 nanocomposite. In synthesizing the thin films, we have also demonstrated an ability to control the band gap of the materials based on composition and deposition temperature.

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Electronic, magnetic, catalytic, and electrochemical properties of two-dimensional Janus transition metal chalcogenides

Abstract: Two dimensional (2D) nanomaterials have received increasing interest because of their unique properties for versatile applications.

Cited by 56 publications

References 70 publications

2D double aeolotropic conductive Janus pellicle with multi-functionality then derived 3D dual-wall Janus-type tube

2D double aeolotropic conductive Janus pellicle with multi-functionality then derived 3D dual-wall Janus-type tube

Van der Waals Contact to 2D Semiconductors with a Switchable Electric Dipole: Achieving Both n‐ and p‐Type Ohmic Contacts to Metals with a Wide Range of Work Functions

Chemical vapor deposition of tin sulfide from diorganotin(IV) dixanthates

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