Characterisation of Cu2O/CuO thin films produced by plasma-assisted DC sputtering for solar cell application

Yahya Alajlani, Frank Placido, Hin On Chu, Robert De Bold, Lewis Fleming, Desmond Gibson

Research output: Contribution to journalArticle

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Abstract

For large-scale implementation of devices magnetron sputtering is a practical method of producing metal oxides, however sputtered copper oxides tend to form as a mixture of Cu2O, Cu4O3, and CuO, with Cu2O being particularly difficult to produce reliably in pure form. In this study, nanostructured thin films of Cu2O, Cu4O3, and CuO were prepared using a novel reactive sputtering system, based on plasma-assisted DC magnetron sputtering with deposition and plasma assisted reaction zones spatially separated enabling separate control of film oxidation. X-ray diffraction, optical spectroscopy, and Raman spectroscopy were used to characterise the physical and optical properties and it is shown that plasma-assisted DC sputtering is a suitable technique for reliable production of CuO and Cu2O films in large areas at room temperature without the necessity of further processing. The results also indicate that solar cell performance may relate positively to the presence of crystalline Cu4O3 (200) and/or Cu2O (111) over other crystalline forms of copper oxide or amorphous copper oxide thin films.
Original languageEnglish
Pages (from-to)45-50
Number of pages6
JournalThin Solid Films
Volume642
Early online date13 Sep 2017
DOIs
Publication statusE-pub ahead of print - 13 Sep 2017

Fingerprint

Copper oxides
copper oxides
Sputtering
Solar cells
solar cells
sputtering
direct current
Plasmas
Thin films
Magnetron sputtering
magnetron sputtering
thin films
Crystalline materials
Reactive sputtering
Oxides
Oxide films
metal oxides
Raman spectroscopy
Optical properties
Physical properties

Keywords

  • Cuprous oxide
  • Copper oxide
  • Cupric oxide
  • Thin films
  • Plasma deposition
  • Semi-conductors
  • Solar cells

Cite this

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title = "Characterisation of Cu2O/CuO thin films produced by plasma-assisted DC sputtering for solar cell application",
abstract = "For large-scale implementation of devices magnetron sputtering is a practical method of producing metal oxides, however sputtered copper oxides tend to form as a mixture of Cu2O, Cu4O3, and CuO, with Cu2O being particularly difficult to produce reliably in pure form. In this study, nanostructured thin films of Cu2O, Cu4O3, and CuO were prepared using a novel reactive sputtering system, based on plasma-assisted DC magnetron sputtering with deposition and plasma assisted reaction zones spatially separated enabling separate control of film oxidation. X-ray diffraction, optical spectroscopy, and Raman spectroscopy were used to characterise the physical and optical properties and it is shown that plasma-assisted DC sputtering is a suitable technique for reliable production of CuO and Cu2O films in large areas at room temperature without the necessity of further processing. The results also indicate that solar cell performance may relate positively to the presence of crystalline Cu4O3 (200) and/or Cu2O (111) over other crystalline forms of copper oxide or amorphous copper oxide thin films.",
keywords = "Cuprous oxide, Copper oxide, Cupric oxide, Thin films, Plasma deposition, Semi-conductors, Solar cells",
author = "Yahya Alajlani and Frank Placido and Chu, {Hin On} and {De Bold}, Robert and Lewis Fleming and Desmond Gibson",
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Characterisation of Cu2O/CuO thin films produced by plasma-assisted DC sputtering for solar cell application. / Alajlani, Yahya; Placido, Frank; Chu, Hin On; De Bold, Robert; Fleming, Lewis; Gibson, Desmond.

In: Thin Solid Films, Vol. 642, 13.09.2017, p. 45-50.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Characterisation of Cu2O/CuO thin films produced by plasma-assisted DC sputtering for solar cell application

AU - Alajlani, Yahya

AU - Placido, Frank

AU - Chu, Hin On

AU - De Bold, Robert

AU - Fleming, Lewis

AU - Gibson, Desmond

N1 - 12 months embargo

PY - 2017/9/13

Y1 - 2017/9/13

N2 - For large-scale implementation of devices magnetron sputtering is a practical method of producing metal oxides, however sputtered copper oxides tend to form as a mixture of Cu2O, Cu4O3, and CuO, with Cu2O being particularly difficult to produce reliably in pure form. In this study, nanostructured thin films of Cu2O, Cu4O3, and CuO were prepared using a novel reactive sputtering system, based on plasma-assisted DC magnetron sputtering with deposition and plasma assisted reaction zones spatially separated enabling separate control of film oxidation. X-ray diffraction, optical spectroscopy, and Raman spectroscopy were used to characterise the physical and optical properties and it is shown that plasma-assisted DC sputtering is a suitable technique for reliable production of CuO and Cu2O films in large areas at room temperature without the necessity of further processing. The results also indicate that solar cell performance may relate positively to the presence of crystalline Cu4O3 (200) and/or Cu2O (111) over other crystalline forms of copper oxide or amorphous copper oxide thin films.

AB - For large-scale implementation of devices magnetron sputtering is a practical method of producing metal oxides, however sputtered copper oxides tend to form as a mixture of Cu2O, Cu4O3, and CuO, with Cu2O being particularly difficult to produce reliably in pure form. In this study, nanostructured thin films of Cu2O, Cu4O3, and CuO were prepared using a novel reactive sputtering system, based on plasma-assisted DC magnetron sputtering with deposition and plasma assisted reaction zones spatially separated enabling separate control of film oxidation. X-ray diffraction, optical spectroscopy, and Raman spectroscopy were used to characterise the physical and optical properties and it is shown that plasma-assisted DC sputtering is a suitable technique for reliable production of CuO and Cu2O films in large areas at room temperature without the necessity of further processing. The results also indicate that solar cell performance may relate positively to the presence of crystalline Cu4O3 (200) and/or Cu2O (111) over other crystalline forms of copper oxide or amorphous copper oxide thin films.

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KW - Copper oxide

KW - Cupric oxide

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KW - Plasma deposition

KW - Semi-conductors

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