@phdthesis{Rosenits2011Elect-13958,
  year={2011},
  publisher={München : Dr. Hut},
  title={Electrical characterisation of crystalline silicon thin-film material},
  author={Rosenits, Philipp},
  address={Konstanz},
  school={Universität Konstanz}
}

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    <dcterms:abstract xml:lang="eng">Epitaxial wafer equivalents combine the high efficiencies of conventional wafer-based silicon solar cells with the low production costs of thin-film solar cells. However, many electrical properties of this material are still unknown.&lt;br /&gt;&lt;br /&gt;One important part of this work comprised the development and establishment of measurement and analysis methods which enable the assessment of the electrical quality of crystalline silicon thin-film (cSiTF) material. Lifetime measurement methods that are already well-established for the characterisation of standard wafer material, such as the microwave-detected photoconductance decay (MWPCD) method, photoluminescence (PL) or quasi-steady-state photoconductance (QSSPC) measurements, have been adapted or modified to suit the needs of cSiTF material.&lt;br /&gt;&lt;br /&gt;Another important aspect of this thesis was the assessment of the determined minority carrier lifetime and the estimation of its impact on the performance of the final thin-film solar cell. Therefore, a series of solar cells have been processed, analysed and their cell results compared to the lifetimes measured on the starting material. By applying a standard cell process and using highly-doped Czochralski substrates, cell efficiencies of around 15% at an epitaxial base thickness of 15 µm have been achieved, approaching 16.5% for 40 µm thick epitaxial layers. Furthermore, if the same epitaxial layers are deposited on (electrically active) 1 Ωcm p-type float zone substrates, efficiencies up to 18.0% have been archieved.</dcterms:abstract>
    <dcterms:title>Electrical characterisation of crystalline silicon thin-film material</dcterms:title>
    <dc:publisher>München : Dr. Hut</dc:publisher>
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    <dc:creator>Rosenits, Philipp</dc:creator>
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