Search for dissertations about: "band-gap"
Showing result 1 - 5 of 190 swedish dissertations containing the word band-gap.
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1. Optical characterization of wide band gap materials by spectroscopic ellipsometry
Abstract : Spectroscopic ellipsometry has been employed in the study of wide band gap materials. Ellipsometry is based on the study of changes in the polarization state of light upon reflection on a surface. READ MORE
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2. Low Band-Gap Conjugated Polymers for Plastic Solar Cells
Abstract : Today, fossil fuels like coal, oil, and natural gas are used for more than 60% of the world's electricity production. These fuels have a very negative impact on the environment and many researchers agree that the earth's climate is changing as a consequence of fossil fuel emissions. READ MORE
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3. Magnetism in Band Gap Engineered Sputtered MgxZn(1-x)O Thin Films
Abstract : This dissertation presents a comprehensive study of the intrinsic room temperature ferromagnetism, RTFM, in technologically important thin films of ZnO, MgO, Mg@ZnO, the so-called d0–magnets that do not contain any intrinsic magnetic elements. We also present the first report on magnetism in Mn doped MgO films fabricated by dc magnetron sputtering. READ MORE
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4. Low band-gap polyfluorenes for plastic solar cells
Abstract : .... READ MORE
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5. Band gap engineering in Cu2ZnGexSn1-xS4 thin film solar cells
Abstract : Photovoltaics based on kesterite Cu2ZnSnS4 (CZTS) has attracted interest as a sustainable alternative to other thin film technologies due to their tunable material properties and earth-abundance. However, the efficiency is limited to 12. READ MORE