Pulsed laser deposition of thin carbon films on SiO2/Si substrates

Milenov, T. I.; Dikovska, A.; Avdeev, G.; Avramova, I.; Kirilov, K.; Karashanova, Daniela; Terziyska, P.; Georgieva, Biliana; Arnaudov, B.; Kolev, S.; Valcheva, E.

doi:10.1016/j.apsusc.2019.02.220

Cited by 14 publications

(10 citation statements)

References 39 publications

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“…A short presentation of all deposited films (specimens C1, C2, P1 and P2) with description of the corresponding PLD process parameters as well as numerical results from the different characterization methods used in this work are given in table 1. The characterization process details and results can be found elsewhere [12]. It could be concluded from the characterization results that: i) C1 films consist of nanosized few-layered (5 -8 layers) graphene flakes with an area of about 3 -5 nm and a completely arbitrary orientation with reference to each other.…”

Section: Resultsmentioning

confidence: 97%

“…Specimens C1 and C2 were deposited using continuous mode PLD for 180 s and 30 s deposition time, respectively -see ref. [12] for more details. Electro-physical measurements were conducted on all four types of specimens.…”

Section: Methodsmentioning

confidence: 99%

“…As it was reported in ref. [12] these specimens were thoroughly characterized by ellipsometry, transmission electron microscopy Raman spectroscopy, etc.…”

Section: Methodsmentioning

confidence: 99%

“…We present here the results of a study on the electrical transport at low temperatures in various samples of thin carbon films, including single-to two-layered defected graphene films obtained by pulsed laser deposition (PLD) method described in ref. [12]. Our interest is provoked by the possibility of application as an active medium for detectors of completely reproducibly obtained by the described method layers.…”

Section: Introductionmentioning

confidence: 99%

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Low temperature electrical transport in thin carbon films deposited on SiO₂/Si substrates by pulsed laser deposition

Valcheva

Kirilov

Dikovska

et al. 2023

J. Phys.: Conf. Ser.

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In this paper electrical transport studies are performed on thin carbon films deposited on SiO2/Si substrates by pulsed laser deposition (PLD) applying laser ablation of micro-crystalline graphite target. Experiments were carried out on 320 - 420 nm thick SiO2 on Si substrates as well as on hydrogenated diamond-like carbon (DLC) films deposited on SiO2/Si. Structural studies by means of XPS, SEM and Raman spectroscopy revealed that the films can be characterized as nano-sized carbon phases possessing different phase composition (i.e. the ratio sp3/sp2 hybridized carbon, etc.). The electrical conductivity/resistivity of the films was measured in the temperature range 10 K < T < 300 K. Four-contact Van der Pauw method as well as two contact schemes have been applied. Some films have low room temperature resistivity in the range ρ = (0.1–1.5)×10-3 Ω.·m and consist predominantly of sp2 hybridized carbon with Raman spectra, which resemble that of nano-sized graphene depending on the deposition conditions and substrates used. The thinnest only 0.5 nm layer deposited directly on SiO2 exhibits relatively low specific resistance (~10-3 Ω. m), which can be taken as an indication of good deposition conditions of graphene-like layers. The current flow mechanism was explored at temperatures from 300 K down to 10K. The temperature dependence reveals non-metallic behavior - the conductivity decreases at decreasing temperature as opposed to typical metal behaviour. A model of variable range hopping (VRH) mechanism is applied to explain the low temperature conductivity drawn from transport in nanocrystalline disordered systems.

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Section: Resultsmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

“…As it was reported in ref. [12] these specimens were thoroughly characterized by ellipsometry, transmission electron microscopy Raman spectroscopy, etc.…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Low temperature electrical transport in thin carbon films deposited on SiO₂/Si substrates by pulsed laser deposition

Valcheva

Kirilov

Dikovska

et al. 2023

J. Phys.: Conf. Ser.

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show abstract

“…Though these works used various types of materials, they chose the same facile way to prepare the nanostructure by using arrays as a core and high-quality materials as a shell. PLD is a powerful tool for depositing thin films with great precision in thickness and quality at a controllable laser intensity and frequency. − The high-quality target and feathering deposition process of PLD endorse the perfect ability to produce conformal ultrahigh-quality films under a low temperature.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a TiO₂/Fe₂O₃ Core/Shell Nanostructure by Pulse Laser Deposition toward Stable and Visible Light Photoelectrochemical Water Splitting

Lü

Song

et al. 2020

ACS Omega

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Here, we report the fabrication of TiO 2 /Fe 2 O 3 core/shell heterojunction nanorod arrays by a pulsed laser deposition (PLD) process and their further use as photoelectrodes toward high-performance visible light photoelectrochemical (PEC) water splitting. The morphology, phase, and carrier conduction mechanism of plain TiO 2 and TiO 2 /Fe 2 O 3 core/shell nanostructure were systematically investigated. PEC measurements show that the TiO 2 /Fe 2 O 3 core/shell nanostructure enhances photocurrent density by nearly 2 times than the plain ones, increases visible light absorption from 400 to 550 nm, raises the on/off separation rate, and delivers high stability with only a 3% decrease of current density for tests of even more than 14 days. This work provides a method to design an efficient nanostructure by combination of a facile hydrothermal process and high-quality PLD process to fabricate a clean surface and excellent crystallinity for charge separation, transfer, and collection toward enhanced PEC properties.

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Effect of annealing temperature on the continuity and conductivity of coal-based carbon films prepared by ball milling

Yin

Dong

Zhang

et al. 2020

Applied Surface Science

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Pulsed laser deposition of thin carbon films on SiO2/Si substrates

Cited by 14 publications

References 39 publications

Low temperature electrical transport in thin carbon films deposited on SiO₂/Si substrates by pulsed laser deposition

Low temperature electrical transport in thin carbon films deposited on SiO₂/Si substrates by pulsed laser deposition

Fabrication of a TiO₂/Fe₂O₃ Core/Shell Nanostructure by Pulse Laser Deposition toward Stable and Visible Light Photoelectrochemical Water Splitting

Effect of annealing temperature on the continuity and conductivity of coal-based carbon films prepared by ball milling

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Pulsed laser deposition of thin carbon films on SiO2/Si substrates

Cited by 14 publications

References 39 publications

Low temperature electrical transport in thin carbon films deposited on SiO2/Si substrates by pulsed laser deposition

Low temperature electrical transport in thin carbon films deposited on SiO2/Si substrates by pulsed laser deposition

Fabrication of a TiO2/Fe2O3 Core/Shell Nanostructure by Pulse Laser Deposition toward Stable and Visible Light Photoelectrochemical Water Splitting

Effect of annealing temperature on the continuity and conductivity of coal-based carbon films prepared by ball milling

Contact Info

Product

Resources

About

Low temperature electrical transport in thin carbon films deposited on SiO₂/Si substrates by pulsed laser deposition

Low temperature electrical transport in thin carbon films deposited on SiO₂/Si substrates by pulsed laser deposition

Fabrication of a TiO₂/Fe₂O₃ Core/Shell Nanostructure by Pulse Laser Deposition toward Stable and Visible Light Photoelectrochemical Water Splitting