Following the celebrated discovery of graphene, considerable attention has been directed toward the rich spectrum of properties offered by van der Waals crystals. However, studies have been largely limited to their 2D properties due to lack of 1D structures. Here, the growth of high-yield, single-crystalline 1D nanobelts composed of transition metal ditellurides at low temperatures (T ≤ 500 °C) and in short reaction times (t ≤ 10 min) via the use of tellurium-rich eutectic metal alloys is reported. The synthesized semimetallic 1D products are highly pure, stoichiometric, structurally uniform, and free of defects, resulting in high electrical performances. Furthermore, complete compositional tuning of the ternary ditelluride nanobelts is achieved with suppressed phase separation, applicable to the creation of unprecedented low-dimensional materials/devices. This approach may inspire new growth/fabrication strategies of 1D layered nanostructures, which may offer unique properties that are not available in other materials.
Bibliographical noteFunding Information:
This work was supported by the Outstanding Research Fund (Grant No. 1.170093.01) of UNIST (Ulsan National Institute of Science and Technology) and by Nano·Material Technology Development Program (Grant No. 2017M3A7B8065377), Basic Science Research Program (Grant Nos. 2017R1E1A1A01075283, 2017R1A2B2006568 (for G.H.L.), and 2017R1C1B1008979), Midcareer Researcher Program (Grant No. 2015R1A2A2A01006992) and Grant Nos. 2012M3A7B4049807 and RIAM NRF-2016R1D1A1A02937045 through the National Research Foundation (NRF) of Korea funded by the Ministry of Science, ICT, and Future Planning. This work has benefited from the use of the facilities at UNIST Central Research Facilities.
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering