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Title: Metastable 1T′-phase group VIB transition metal dichalcogenide crystals
Authors: Lai, Zhuangchai
He, Qiyuan
Tran, Thu Ha
Repaka, D. V. Maheswar
Zhou, Dong-Dong
Xi, Shibo
Li, Yongxin
Chaturvedi, Apoorva
Tan, Chaoliang
Chen, Bo
Nam, Gwang-Hyeon
Li, Bing
Ling, Chongyi
Zhai, Wei
Shi, Zhenyu
Hu, Dianyi
Sharma, Vinay
Hu, Zhaoning
Chen, Ye
Zhang, Zhicheng
Yu, Yifu
Wang, Renshaw Xiao
Ramanujan, Raju V.
Ma, Yanming
Hippalgaonkar, Kedar
Zhang, Hua
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.
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.
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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