The influence of thermal stability on the properties of Cu3N layers synthesized by pulsed magnetron sputtering method

Okrasa, Sebastian; Wilczopolska, Magdalena; Strzelecki, Grzegorz W.; Nowakowska-Langier, Katarzyna; Choduń, Rafał; Minikayev, R.; Król, K.; Skowroński, Łukasz; Namyślak, K.; Wicher, B.; Wiraszka, A.; Zdunek, Krzysztof

doi:10.1016/j.tsf.2021.138889

Cited by 8 publications

(7 citation statements)

References 35 publications

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“…This demonstrates the over-stoichiometry of the film in terms of N content, as other authors have previously reported [ 20 , 37 , 43 ]. With regard to the mean grain size calculated, no clear trend was observed in RF power for the different sample series of gas pressures, with the values being around 27–38 nm, similar to those obtained in the literature [ 9 , 32 , 37 ]. A higher grain size was observed, as highlighted for the samples in region I; hence, a better crystal quality was expected, as confirmed in the following paragraph by the analysis of the FWHM values of the dominant peak.…”

Section: Resultssupporting

confidence: 86%

“…A slight shift to a lower wavenumber was observed as the RF power increased, regardless of the gas pressure. This could be indicative of a deviation from the stoichiometric level that changed with the RF power parameter [ 32 ]. At 3.5 Pa, the main peak was widened as the RF power increased, in agreement with the data extracted from the XRD spectra (see Figure 4 ).…”

Section: Resultsmentioning

confidence: 99%

“…Finally, the thermal decomposition of Cu 3 N is a parameter that should also be considered because it occurs at a temperature that is not relatively high, from 100 to 470 °C. Okrasa et al [ 32 ] reported that, at a high temperature of 200 °C, structural changes related to the release of pure Cu could be observed.…”

Section: Introductionmentioning

confidence: 99%

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Impact of the RF Power on the Copper Nitride Films Deposited in a Pure Nitrogen Environment for Applications as Eco-Friendly Solar Absorber

et al. 2023

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This material can be considered to be an interesting eco-friendly choice to be used in the photovoltaic field. In this work, we present the fabrication of Cu3N thin films by reactive radio-frequency (RF) magnetron sputtering at room temperature, using nitrogen as the process gas. Different RF power values ranged from 25 to 200 W and gas pressures of 3.5 and 5 Pa were tested to determine their impact on the film properties. The morphology and structure were exhaustively examined by Atomic Force Microscopy (AFM), Fourier Transform Infrared (FTIR) and Raman Spectroscopies and X-ray Diffraction (XRD), respectively. The AFM micrographs revealed different morphologies depending on the total pressure used, and rougher surfaces when the films were deposited at the lowest pressure; whereas FTIR and Raman spectra exhibited the characteristics bands related to the Cu-N bonds of Cu3N. Such bands became narrower as the RF power increased. XRD patterns showed the (100) plane as the preferred orientation, that changed to (111) with the RF power, revealing a worsening in structural quality. Finally, the band gap energy was estimated from transmission spectra carried out with a Perkin Elmer 1050 spectrophotometer to evaluate the suitability of Cu3N as a light absorber. The values obtained demonstrated the capability of Cu3N for solar energy conversion applications, indicating a better film performance under the sputtering conditions 5.0 Pa and RF power values ranged from 50 to 100 W.

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Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 99%

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Impact of the RF Power on the Copper Nitride Films Deposited in a Pure Nitrogen Environment for Applications as Eco-Friendly Solar Absorber

et al. 2023

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“…The relationship in the Cu-N films between plasma composition and the modulation frequency was reported to have better control of the synthesis process, which allows for multiple possibilities in material design [36]. Similar relations have been noted in the synthesis of other materials, such as metals [31,32], oxides [60,61], and nitrides [33,36,62]. As observed in the present study, HEA coatings synthesized with a lower frequency (10 Hz) have more than twofold higher thickness.…”

Section: Eds Resultssupporting

confidence: 84%

Multi-component low and high entropy metallic coatings synthesized by pulsed magnetron sputtering

Strzelecki

Nowakowska-Langier

Mulewska

et al. 2022

Surface and Coatings Technology

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“…The material is thermally and structurally stable at temperatures up to 200°C. [4] However, its thermal decomposition occurs in the temperature range of 100–470°C. [5] In this sense, it has been reported that at high temperatures, visible structural changes can be appreciated and they may be related to the release of pure Cu.…”

Section: Introductionmentioning

confidence: 99%

Power effect on the properties of copper nitride films as solar absorber deposited in pure nitrogen atmosphere

et al. 2023

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Nowadays, copper nitride (Cu3N) is of great interest as a new solar absorber material, flexible and lightweight thin film solar cells. This material is a metastable semiconductor, nontoxic, composed of earth‐abundant elements, and its band gap energy can be easily tunable in the range 1.4–1.8 eV. For this reason, it has been proposed for many applications in the solar energy conversion field. The main aim of this work is to evaluate the properties of the Cu3N thin films fabricated by reactive radio‐frequency (RF) magnetron sputtering at different RF power values to determine its potential as light absorber. The Cu3N films were fabricated at room temperature from a Cu metallic target at the RF power ranged from 25 to 200 W onto different substrates (silicon and glass). The pure nitrogen flux was set to 20 sccm, and the working pressures were set to 3.5 Pa and 5 Pa. The X‐ray diffraction results showed a transition from (100) to (111) preferred orientations when RF power increased; the atomic force microscopy images revealed a granular morphology, while Fourier transform infrared spectroscopy and Raman spectra exhibited the characteristics peaks related to Cu–N bonds, which became narrower when the RF power increased. Finally, to stablish the suitability of these films as absorber, the band gap energy was calculated from transmission spectra.

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The influence of thermal stability on the properties of Cu3N layers synthesized by pulsed magnetron sputtering method

Cited by 8 publications

References 35 publications

Impact of the RF Power on the Copper Nitride Films Deposited in a Pure Nitrogen Environment for Applications as Eco-Friendly Solar Absorber

Impact of the RF Power on the Copper Nitride Films Deposited in a Pure Nitrogen Environment for Applications as Eco-Friendly Solar Absorber

Multi-component low and high entropy metallic coatings synthesized by pulsed magnetron sputtering

Power effect on the properties of copper nitride films as solar absorber deposited in pure nitrogen atmosphere

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