Two-Dimensional Silver-Chalcogenolate-Based Cluster-Assembled Material: A <i>p</i>-type Semiconductor.
basic_science · Level V
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- Record sourced from PubMed, PMID 37725097.
- Also identified by DOI 10.1021/acs.nanolett.3c02269.
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Abstract
We have synthesized and characterized a new two-dimensional honeycomb architecture resembling a single-layer of atomically precise silver cluster-assembled material (CAM), [Ag<sub>12</sub>(S<sup><i>t</i></sup>Bu)<sub>6</sub>(CF<sub>3</sub>COO)<sub>6</sub>(4,4'-azopyridine)<sub>3</sub>] (<b>Ag</b><sub><b>12</b></sub><b>-azo-bpy</b>). The interlayer noncovalent van der Waals interactions within the single-crystals were successfully disrupted, leading to the creation of this unique structure. The optimized <b>Ag</b><sub><b>12</b></sub><b>-azo-bpy</b> CAM demonstrates a valence band that is localized on the Ag<sub>12</sub> cluster node situated near the Fermi energy level. This localization induces electron injection from the linker to the cluster node, facilitating efficient charge transportation along the plane. Exploiting this single-layer structure as a distinctive platform for <i>p</i>-type channel material, it was employed in a field-effect transistor configuration. Remarkably, the transistor exhibits a high hole mobility of 1.215 cm<sup>2</sup> V<sup>-1</sup> s<sup>-1</sup> and an impressive ON/OFF current ratio of ∼4500 at room-temperature.