Das Anish Kumar, Biswas Sourav, Kayal Arijit, Reber Arthur C, Bhandary Subhrajyoti, Chopra Deepak, Mitra Joy, Khanna Shiv N, Mandal Sukhendu
School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India.
School of Physics, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala 695551, India.
Nano Lett. 2023 Oct 11;23(19):8923-8931. doi: 10.1021/acs.nanolett.3c02269. Epub 2023 Sep 19.
We have synthesized and characterized a new two-dimensional honeycomb architecture resembling a single-layer of atomically precise silver cluster-assembled material (CAM), [Ag(SBu)(CFCOO)(4,4'-azopyridine)] (). The interlayer noncovalent van der Waals interactions within the single-crystals were successfully disrupted, leading to the creation of this unique structure. The optimized CAM demonstrates a valence band that is localized on the Ag 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 -type channel material, it was employed in a field-effect transistor configuration. Remarkably, the transistor exhibits a high hole mobility of 1.215 cm V s and an impressive ON/OFF current ratio of ∼4500 at room-temperature.
我们合成并表征了一种新型二维蜂窝状结构，它类似于单层原子精确的银簇组装材料（CAM），即[Ag(SBu)(CFCOO)(4,4'-偶氮吡啶)]。单晶内的层间非共价范德华相互作用被成功破坏，从而产生了这种独特的结构。优化后的CAM展示出一个位于费米能级附近的银簇节点上的价带。这种局域化促使电子从连接体注入到簇节点，有利于沿平面进行高效的电荷传输。利用这种单层结构作为p型沟道材料的独特平台，将其应用于场效应晶体管配置中。值得注意的是，该晶体管在室温下表现出1.215 cm² V⁻¹ s⁻¹的高空穴迁移率和约4500的令人印象深刻的开/关电流比。
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