Field-effect transistors made of individual colloidal PbS nanosheets
arXiv:1307.7500 · doi:10.1063/1.4745786
Abstract
Two-dimensional materials are considered for future quantum devices and are usually produced by extensive methods like molecular beam epitaxy. We report on the fabrication of field-effect transistors using individual ultra-thin lead sulfide nanostructures with lateral dimensions in the micrometer range and a height of a few nanometers as conductive channel produced by a comparatively fast, inexpensive, and scalable colloidal chemistry approach. Contacted with gold electrodes, such devices exhibit p-type behavior and temperature-dependent photoconductivity. Trap states play a crucial role in the conduction mechanism. The performance of the transistors is among the ones of the best devices based on colloidal nanostructures.
arXiv comment5 pages, 4 figures
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- From dots to stripes to sheets - Shape control of lead sulfide nanostructures
- Colloidal two-dimensional metal chalcogenides: Realization and application of the structural anisotropy
- Photoexcitation of PbS Nanosheets Leads to Highly Mobile Charge Carriers and Stable Excitons
- Insights into the formation mechanism of two-dimensional lead halide nanostructures
- High Performance n- and p-Type Field-Effect Transistors Based on Hybridly Surface-Passivated Colloidal PbS Nanosheets
- Synthesis of single-crystalline lead sulfide nanoframes and nanorings
- Solving the Synthetic Riddle of Colloidal 2D PbTe Nanoplatelets with Tunable Near-Infrared Emission
- Function follows form: From semiconducting to metallic towards superconducting PbS nanowires by faceting the crystal
- Colloidal Lead Iodide Nanorings