Tailoring the Height of Ultrathin PbS Nanosheets and Their Application as Field‐Effect Transistors |
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Authors: | Thomas Bielewicz Sedat Dogan Christian Klinke |
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Affiliation: | Institute of Physical Chemistry, University of Hamburg, Hamburg, Germany |
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Abstract: | Two‐dimensional, solution‐processable semiconductor materials are anticipated to be used in low‐cost electronic applications, such as transistors and solar cells. Here, lead sulfide nanosheets with a lateral size of several micrometers are synthesized and it is shown how their height can be tuned by the variation of the ligand concentrations. As a consequence of the adjustability of the nanosheets' height between 4 to more than 20 nm charge carriers are in confinement, which has a decisive impact on their electronic properties. This is demonstrated by their use as conduction channel in a field‐effect transistor. The experiments show that the performance in terms of current, On/Off ratio, and sub‐threshold swing is tunable over a large range. |
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Keywords: | colloidal synthesis colloidal nanostructures lead sulfide two‐dimensional materials electron transport transistors |
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