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Mcnaughter, Paul D.
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Publications (5/5 displayed)
- 2023Enhanced Thermoelectric Performance of Tin(II) Sulfide Thin Films Prepared by Aerosol Assisted Chemical Vapor Depositioncitations
- 2022Tunable structural, morphological and optical properties of undoped, Mn, Ni and Ag-doped CuInS2 thin films prepared by AACVDcitations
- 2021Synthesis of molybdenum-doped rhenium disulfide alloy using aerosol-assisted chemical vapour depositioncitations
- 2017PbS x Se 1−x thin films from the thermal decomposition of lead(II) dodecylxanthate and bis(N,N-diethyl-N′-naphthoylselenoureato)lead(II) precursorscitations
- 2017PbSxSe1−x thin films from the thermal decomposition of lead(II) dodecylxanthate and bis(N,N-diethyl-N′-naphthoylselenoureato)lead(II) precursorscitations
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article
Tunable structural, morphological and optical properties of undoped, Mn, Ni and Ag-doped CuInS2 thin films prepared by AACVD
Abstract
The preparation of high-quality copper indium sulphide, CuInS2 photo-absorber material with <br/>tunable properties for efficient, low-cost, thin film solar cells using scalable methods remains a <br/>challenge. In order to address this, high quality off-stoichiometric undoped and Mn, Ni and Agdoped CuInS2 (CIS) thin films have been deposited onto glass substrates by aerosol-assisted <br/>chemical vapour deposition (AACVD) using metal diethyldithiocarbamate precursors at <br/>temperatures of 350, 400 and 450 °C. Data from powder X-ray diffraction (p-XRD), Raman <br/>spectroscopy and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEMEDS) suggest a correlation of morphology and composition of tetragonal phase (chalcopyrite and <br/>copper-gold-type) sulphur-deficient microcrystalline CIS thin films. For undoped thin films, nearinfrared optical absorption and emission with tunable band gap between 1.32 and 1.42 eV are <br/>likely associated with donor-acceptor pairs involving deep or shallow electronic states such as <br/>sulphur vacancies (VS<br/><br/>), indium-copper anti-sites (InCu<br/><br/>) and indium interstitials (Ini<br/><br/>) as donors <br/>and copper vacancies (VCu′) as acceptors. Whilst Mn-doped thin films exhibit minimal tunable <br/>properties, Ni and Ag-doped films exhibit tunable morphology, composition and near-infrared <br/>absorption for small dopant content. Though further studies are required to explore the defect <br/>chemistry, these results show the utility of AACVD in tuning structural, morphological and optical <br/>properties of undoped, Mn, Ni and Ag-doped CIS thin films.<br/>Keywords: copper indium sulphide, AACVD, doped thin films, tunable optical properties, <br/>photovoltaic material.