Bias effects on structure and piezoresistive properties of DLC:Ag thin films

Meškinis, Šarūnas; Vasiliauskas, Andrius; Šlapikas, K.; Gudaitis, Rimantas; Andrulevičius, Mindaugas; Čiegis, Arvydas; Niaura, Gediminas; Kondrotas, Rokas; Tamulevičius, Sigitas

doi:10.1016/j.surfcoat.2014.01.026

Cited by 32 publications

(37 citation statements)

References 34 publications

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“…4b, Table 2). This is in good accordance with the model explaining piezoresistance phenomenon in diamond like carbon films [8,10] as well as with other studies on piezoresistivity of hydrogen free DLC films [12] and DLC films containing Ag [19,20] or Cr [18]. In those studies gauge factor of DLC films increased with sp 3 /sp 2 carbon bond ratio.…”

Section: Propertiessupporting

confidence: 92%

“…For example, Ni nanoclusters in DLC films containing Ni are coated by few layers of graphene [6], while Ag nanoclusters probably are coated by silver oxide [19,20]. In the case of DLC:Cu films studied in the present research, copper nanoclusters at least partially are coated by copper oxide overlayer as it is shown in Fig.…”

Section: Accepted Manuscriptsupporting

confidence: 50%

“…According to that model, gauge factor of the DLC films containing metal should increase with the increase of metal nanocluster size [15]. It should be mentioned that gauge factor of the DLC films containing tungsten [15] as well as DLC films containing silver [19,20] increased with the increase of the metal cluster size. In the present study, Cu nanocluster size increased with copper atomic concentration.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…3. Despite that, it seems that the main tendencies of the piezoresistance phenomena (gauge factor dependence on the metal concentration, resistance) for DLC:Cu films are similar to the A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 19 DLC films containing Cr [18] and undoped DLC films [12]. Particularly it can be mentioned that in [12] linear dependence of k Vs log(R) was reported for undoped hydrogen free DLC films -similarly to the present study.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…In the case of the diamond like carbon films, this effect may be eliminated by depositing DLC films nanocomposite containing different metals -DLC nanocomposites. Till now piezoresistive properties of DLC films containing W [15][16][17], Ag [17,19,20], Ti [17], Cr [18], Sn [21], Ni [6,17,[22][23][24][25] were investigated and reported. However combination of the relatively high piezoresistive gauge factor (up to 14-16 and even 20-30) and zero temperature coefficient of resistance (TCR) was reported only for DLC films containing nickel [6,17,[22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

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Silver-Gold alloy/diamond like carbon (Ag-Au/DLC) nanocomposite films were prepared by co-deposition of RF-sputtering and RF-PECVD on glass substrates by using acetylene gas and silver-gold target. The deposition process was carried out at room temperature in one minute with the variable parameters of initial pressures and RF powers. X-ray diffraction analysis demonstrated the formation of Ag/Au alloy nanoparticles with a face-centered cubic (FCC) structure.Localized surface plasmon and optical properties of Ag-Au alloy nanoparticles were studied by UV-visible spectrophotometry which showed that increasing RF power and initial pressure cause a redshift in all samples. Moreover, the effect of RF power and initial pressure on the size and shape of nanoparticles were studied by 2D Atomic force microscopy images. Energy dispersive X-ray spectroscopy revealed the formation of Ag-Au/DLC nanoparticles and the percentages of C, Ag, Au and O in all samples. The applied method for Ag/Au alloy preparation is the one step and low-cost method which makes the samples ready for sensing application.

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Two‐Dimensional Semiconductors: Present and Future Challenges

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There is a booming interest in two-dimensional (2D) materials, which are nowadays dominating the landscape of the nanotechnology field. Cutting-edge research is moving towards new mono-elemental 2D materials beyond graphene. [1] To reflect the strong interest of the scientific community towards this hot topic, a Symposium specifically addressing the applications of 2D semiconductor materials has been organized within the frames of the E-MRS Spring Meeting 2019 which took place in Nice (France). This Special Issue showcases the results and outlines the ongoing challenges presented by the participants of the Symposium.The quest for 2D elementary crystals behaving as topological insulators pushed the discovery of new members of the 2D world. As reviewed [2] by A. Molle and co-workers, this regards the family of M-Xenes, which are mono-elemental 2D materials originating from the boron (B, Ga), carbon (C, Si, Ge, Sn, Pb), pnictogen (P, As, Sb, Bi), and chalcogen (Se, Te) groups of the periodic table. Historically, one can distinguish the first generation of Xenes, strictly related to the carbon group and inspired by graphene, [3] whose most famous representative is silicene. [4] The second generation of Xenes includes elements of the adjacent columns, most of which do not possess a stable layered allotrope and thus are synthesized by epitaxial growth. A notable example is phosphorene, [1] synthesized mainly by mechanical or liquid exfoliation or by plasma treatment, [5] that has gained great interest for its peculiar chemical and physical properties. [6] Thus it is a highly promising candidate for applications in nanoelectronics, energy, and the biomedical field. Following this growing interest, current research is addressing heavier elements of the same group, [2] such as arsenene, antimonene, and bismuthene that have the advantage of larger spin-orbit coupling and higher ambient stability than phosphorene.Next to mono-elemental 2D materials, transition metal dichalcogenides (TMD) take on great importance for their complementary properties. For instance, VSe 2 is characterized by piezoelectricity and room-temperature ferromagnetism, coupled with a good ambient stability. [7] Among TMD, the fundamental properties of MoS 2 are studied, [8] and it is also explored as a semiconductor in novel transistors based on vertical van der Waals heterostructures with graphene. [9] WS 2 is a good candidate for optoelectronic devices, because it has the highest band gap (2.0 eV) in the visible region and a very strong photoluminescence emission. [10] Hence, there is the need to synthesize TMD nanosheets on a large scale, for example by moving towards a chemical wet procedure such as solvent-assisted exfoliation. [11] Heterostructures of interest are also built from graphene with aluminum nitride or oxide. In this way, the Fermi level can be finely tuned, achieving an improvement over graphene-based devices. [12] Alternatively, fabrication of one-dimensional graphene nanoribbons [13] by chemical vapor deposition on Ge(111) has been s...

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Bias effects on structure and piezoresistive properties of DLC:Ag thin films

Cited by 32 publications

References 34 publications

Piezoresistive properties of diamond like carbon films containing copper

Piezoresistive properties of diamond like carbon films containing copper

Ag/Au Alloy LSPR Engineering by Co‐deposition of RF‐Sputtering and RF‐PECVD

Two‐Dimensional Semiconductors: Present and Future Challenges

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