Structural and Optical Properties of Luminescent Copper(I) Chloride Thin Films Deposited by Sequentially Pulsed Chemical Vapour Deposition

Krumpolec, Richard; Homola, Tomáš; Cameron, D.C.; Humlíček, Josef; Caha, Ondřej; Kuldová, K.; Zazpe, Raúl; Přikryl, Jan; Macák, Jan M.

doi:10.3390/coatings8100369

Cited by 14 publications

(6 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The doublet at 200.1 and 201.7 eV (Cl 2p 3/2 and Cl 2p 1/2 ) represents organic chlorine, [ 36 ] corresponding to the CCl bond structure in CPTES, whereas another doublet at 198.6 and 200.2 eV (Cl 2p 3/2 and Cl 2p 1/2 ) is related to metal chloride, which may be due to the possible interaction between Cl and Cu. [ 37 ] XPS was also employed to measure the thickness of the coated silane layer. The experiment was conducted by comparing the XPS spectra of unmodified CuP with CuP@Cl samples, and the thickness was approximated by evaluating the intensity attenuation of the Cu 2p core‐level XPS signal.…”

Section: Resultsmentioning

confidence: 99%

Liquid Metal Composites with Enhanced Thermal Conductivity and Stability Using Molecular Thermal Linker

et al. 2021

View full text Add to dashboard Cite

Gallium‐based liquid metal (LM) composite with metallic fillers is an emerging class of thermal interface materials (TIMs), which are widely applied in electronics and power systems to improve their performance. In situ alloying between gallium and many metallic fillers like copper and silver, however, leads to a deteriorated composite stability. This paper presents an interfacial engineering approach using 3‐chloropropyltriethoxysilane (CPTES) to serve as effective thermal linkers and diffusion barriers at the copper‐gallium oxide interfaces in the LM matrix, achieving an enhancement in both thermal conductivity and stability of the composite. By mixing LM with copper particles modified by CPTES, a thermal conductivity (κ) as high as 65.9 W m−1 K−1 is achieved. In addition, κ can be tuned by altering the terminal groups of silane molecules, demonstrating the flexibility of this approach. The potential use of such composite as a TIM is also shown in the heat dissipation of a computer central processing unit. While most studies on LM‐based composites enhance the material performance via direct mixing of various fillers, this work provides a different approach to fabricate high‐performance LM‐based composites and may further advance their applications in various areas including thermal management systems, flexible electronics, consumer electronics, and biomedical systems.

show abstract

Section: Resultsmentioning

confidence: 99%

Liquid Metal Composites with Enhanced Thermal Conductivity and Stability Using Molecular Thermal Linker

et al. 2021

View full text Add to dashboard Cite

show abstract

“…[8] In addition to the compositional variation, disorderrelated effects contribute to the changes in the electronic and optical structure in these solid solutions. [9] With these electronic applications in mind, the synthesis of CuX films has become a hot topic in recent years, with a focus on chemical vapor deposition [10][11][12] and vacuum deposition techniques such as molecular beam epitaxy, [13,14] reactive sputtering, [15] and thermal evaporation. [8,16,17] At the same time, the cuprous halides are promising candidates for other applications, such as the use of CuBr in sensing, [18][19][20] or the use of CuCl as cathode in Mg primary batteries.…”

mentioning

confidence: 99%

Versatile, Rapid, and Plasma‐Assisted Synthesis of Cuprous Halide Composites at Room Temperature and Pressure

Hartl

Ostrikov

MacLeod

2021

Adv Materials Technologies

View full text Add to dashboard Cite

the hole concentration in CuI 1−x Br x can be controlled by modifying the stoichiometric ratio of the halides, demonstrating that these binary halides are promising candidates for tailored electronic properties in next-generation devices. [8] In addition to the compositional variation, disorderrelated effects contribute to the changes in the electronic and optical structure in these solid solutions. [9] With these electronic applications in mind, the synthesis of CuX films has become a hot topic in recent years, with a focus on chemical vapor deposition [10][11][12] and vacuum deposition techniques such as molecular beam epitaxy, [13,14] reactive sputtering, [15] and thermal evaporation. [8,16,17] At the same time, the cuprous halides are promising candidates for other applications, such as the use of CuBr in sensing, [18][19][20] or the use of CuCl as cathode in Mg primary batteries. [21] The growth of CuX on copper is also of interest for batteries, as CuCl/ Cu anodes are being investigated for use in lithium ion batteries (LIBs), [21][22][23] and LIBs comprising an anode made from Cu foam covered with a CuBr-and Br-doped graphene-like film exhibit dendrite-free operation and an increased cycling stability. [24] This ever-expanding suite of applications means that it is of considerable interest to identify new approaches to CuX synthesis. One outstanding challenge is integrating CuX into composite films, where only a limited amount of work has been done. For example, a polyvinyl alcohol (PVA)/CuI composite material, in which the inorganic crystals were synthesized directly within the polymer matrix through the reduction of CuCl 2 by NaI in aqueous PVA solution, has shown promise for photovoltaic applications. [25] Similarly, a polypyrrole/CuI composite film synthesized through a one-pot approach, demonstrated electrochemical sensing properties. [26] Composite films comprising inorganic nanoparticles within a polymer matrix provide advantages for certain applications, where their contrasting and/or complementary properties can create synergistic benefits. [27] Here, we demonstrate a versatile, single-step approach to synthesizing an array of CuX composite films. The process involves deposition of a halogen-containing liquid organic precursor onto a metal substrate, and subsequent application of a dielectric barrier discharge (DBD) plasma. DBD plasma creates a reactive environment, in which electrons, ions, ultraviolet radiation, and free radicals can contribute to reactions in suitable precursor molecules. [28] We have previously shown that exposure to DBD plasma causes cleaving of the CCl bonds Cuprous halides (CuX) are transparent semiconductors with a range of appealing characteristics, and with targeted applications in electronics, energy storage, and sensing. Here, it is demonstrated that CuX films can be formed at room temperature and atmospheric pressure using a rapid, plasma-based approach. Crystalline CuX products are formed using dielectric barrier discharge plasma to react liquid small-molecule precu...

show abstract

“…Figure 6 shows the Cl2p peak of the CuK and CuT samples. The binding energy of Cl2p3/2 at 198.5eV was assigned to the Cu chloride (CuCl) [ 65 ]. There was no significant CuClOx on the surface that would give rise to Cl2p3/2 peaks at energies approximately 206–208 eV [ 66 ].…”

Section: Resultsmentioning

confidence: 99%

Evaluation of the Antimicrobial Protection of Pharmaceutical Kaolin and Talc Modified with Copper and Zinc

et al. 2021

View full text Add to dashboard Cite

Six pharmaceutical pastes were prepared using chemically modified kaolin and talc powders. Tests were conducted to determine their structural and chemical characteristics as well as their antimicrobial protection, thus rendering them suitable for cosmetic and pharmaceutical uses. Kaolin and talc were treated chemically via the cation exchange method to load the clay particles with copper and zinc ions, two cations well known for their antimicrobial properties. Mineralogical analyses were conducted by using X-ray diffraction (XRD) before and after the modification, confirming the mineralogical purity of the samples. Scanning electron microscopy was also used in conjunction with energy dispersed spectroscopy (SEM-EDS) to obtain chemical mapping images, revealing the dispersion of the added metals upon the clay minerals surfaces. Moreover, chemical analysis has been performed (XRF) to validate the enrichment of the clays with each metal utilizing the cation exchange capacity. All modified samples showed the expected elevated concentration in copper or zinc in comparison to their unmodified versions. From the X-ray photoelectron spectroscopy (XPS), the chemical state of the samples’ surfaces was investigated, revealing the presence of salt compounds and indicating the oxidation state of adsorbed metals. Finally, the resistance of pastes in microbial growth when challenged with bacteria, molds, and yeasts was assessed. The evaluation is based on the European Pharmacopeia (EP) criteria.

show abstract

Structural and Optical Properties of Luminescent Copper(I) Chloride Thin Films Deposited by Sequentially Pulsed Chemical Vapour Deposition

Cited by 14 publications

References 45 publications

Liquid Metal Composites with Enhanced Thermal Conductivity and Stability Using Molecular Thermal Linker

Liquid Metal Composites with Enhanced Thermal Conductivity and Stability Using Molecular Thermal Linker

Versatile, Rapid, and Plasma‐Assisted Synthesis of Cuprous Halide Composites at Room Temperature and Pressure

Evaluation of the Antimicrobial Protection of Pharmaceutical Kaolin and Talc Modified with Copper and Zinc

Contact Info

Product

Resources

About