Electronic properties of polyvinylpyrrolidone at the zinc oxide nanoparticle surface: PVP in ZnO dispersions and nanoparticulate ZnO thin films for thin film transistors
We investigated the electrical effects of polyvinylpyrrolidone (PVP), used as a dispersion agent in zinc oxide (ZnO) nanodispersions. We found PVP reduces the high surface conductivity and atmospheric sensitivity. Compared with polymer free ZnO thin films, the nanoparticulate layers with PVP exhibit...
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| Veröffentlicht in: | Journal of materials science 2011-12, Vol.46 (24), p.7776-7783 |
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| container_title | Journal of materials science |
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| creator | Bubel, Simon Mechau, Norman Schmechel, Roland |
| description | We investigated the electrical effects of polyvinylpyrrolidone (PVP), used as a dispersion agent in zinc oxide (ZnO) nanodispersions. We found PVP reduces the high surface conductivity and atmospheric sensitivity. Compared with polymer free ZnO thin films, the nanoparticulate layers with PVP exhibit a smaller density of thermally active charge carriers, a reduced density of trap states, and a Fermi level shift toward the valence band, yielding improved performance, vanishing hysteresis characteristics and reduced atmospheric sensitivity in thin film transistors (TFT). In addition, we discuss the attachment of PVP to the ZnO surface. |
| doi_str_mv | 10.1007/s10853-011-5757-4 |
| format | Article |
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| language | eng |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Characterization and Evaluation of Materials Chemistry and Materials Science Classical Mechanics Crystallography and Scattering Methods Dielectric films Electric properties Materials Science Polymer Sciences Solid Mechanics Thin films Transistors Zinc oxide |
| title | Electronic properties of polyvinylpyrrolidone at the zinc oxide nanoparticle surface: PVP in ZnO dispersions and nanoparticulate ZnO thin films for thin film transistors |
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