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|Title:||Metastable 1T′-phase group VIB transition metal dichalcogenide crystals||Authors:||Lai, Zhuangchai
Tran, Thu Ha
Repaka, D. V. Maheswar
Wang, Renshaw Xiao
Ramanujan, Raju V.
|Keywords:||Engineering::Materials::Metallic materials||Issue Date:||2021||Source:||Lai, Z., He, Q., Tran, T. H., Repaka, D. V. M., Zhou, D., Sun, Y., Xi, S., Li, Y., Chaturvedi, A., Tan, C., Chen, B., Nam, G., Li, B., Ling, C., Zhai, W., Shi, Z., Hu, D., Sharma, V., Hu, Z., ...Zhang, H. (2021). Metastable 1T′-phase group VIB transition metal dichalcogenide crystals. Nature Materials, 20, 1113-1120. https://dx.doi.org/10.1038/s41563-021-00971-y||Project:||A1898b0043
|Journal:||Nature Materials||Abstract:||Metastable 1T′-phase transition metal dichalcogenides (1T′-TMDs) with semi-metallic natures have attracted increasing interest owing to their uniquely distorted structures and fascinating phase-dependent physicochemical properties. However, the synthesis of high-quality metastable 1T′-TMD crystals, especially for the group VIB TMDs, remains a challenge. Here, we report a general synthetic method for the large-scale preparation of metastable 1T′-phase group VIB TMDs, including WS2, WSe2, MoS2, MoSe2, WS2xSe2(1−x) and MoS2xSe2(1−x). We solve the crystal structures of 1T′-WS2, -WSe2, -MoS2 and -MoSe2 with single-crystal X-ray diffraction. The as-prepared 1T′-WS2 exhibits thickness-dependent intrinsic superconductivity, showing critical transition temperatures of 8.6 K for the thickness of 90.1 nm and 5.7 K for the single layer, which we attribute to the high intrinsic carrier concentration and the semi-metallic nature of 1T′-WS2. This synthesis method will allow a more systematic investigation of the intrinsic properties of metastable TMDs.||URI:||https://hdl.handle.net/10356/156006||ISSN:||1476-1122||DOI:||10.1038/s41563-021-00971-y||Rights:||© 2021 The Author(s), under exclusive licence to Springer Nature Limited. All rights reserved. This paper was published in Nature Materials and is made available with permission of The Authors.||Fulltext Permission:||open||Fulltext Availability:||With Fulltext|
|Appears in Collections:||EEE Journal Articles|
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Updated on May 25, 2022
Updated on May 25, 2022
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