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- W2745726353 abstract "Self-assembled nanocrystal solids show promise as a versatile platform for novel optoelectronic materials. Superlattices composed of a single layer of lead–chalcogenide and cadmium–chalcogenide nanocrystals with epitaxial connections between the nanocrystals, present outstanding questions to the community regarding their predicted band structure and electronic transport properties. However, the as-prepared materials are intrinsic semiconductors; to occupy the bands in a controlled way, chemical doping or external gating is required. Here, we show that square superlattices of PbSe nanocrystals can be incorporated as a nanocrystal monolayer in a transistor setup with an electrolyte gate. The electron (and hole) density can be controlled by the gate potential, up to 8 electrons per nanocrystal site. The electron mobility at room temperature is 18 cm2/(V s). Our work forms a first step in the investigation of the band structure and electronic transport properties of two-dimensional nanocrystal superlattices with controlled geometry, chemical composition, and carrier density." @default.
- W2745726353 created "2017-08-31" @default.
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- W2745726353 date "2017-08-16" @default.
- W2745726353 modified "2023-10-14" @default.
- W2745726353 title "Transport Properties of a Two-Dimensional PbSe Square Superstructure in an Electrolyte-Gated Transistor" @default.
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- W2745726353 doi "https://doi.org/10.1021/acs.nanolett.7b01348" @default.
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