TY - JOUR
T1 - Metastable 1T′-phase group VIB transition metal dichalcogenide crystals
AU - Lai, Zhuangchai
AU - He, Qiyuan
AU - Tran, Thu Ha
AU - Repaka, D. V.Maheswar
AU - Zhou, Dong Dong
AU - Sun, Ying
AU - Xi, Shibo
AU - Li, Yongxin
AU - Chaturvedi, Apoorva
AU - Tan, Chaoliang
AU - Chen, Bo
AU - Nam, Gwang Hyeon
AU - Li, Bing
AU - Ling, Chongyi
AU - Zhai, Wei
AU - Shi, Zhenyu
AU - Hu, Dianyi
AU - Sharma, Vinay
AU - Hu, Zhaoning
AU - Chen, Ye
AU - Zhang, Zhicheng
AU - Yu, Yifu
AU - Renshaw Wang, Xiao
AU - Ramanujan, Raju V.
AU - Ma, Yanming
AU - Hippalgaonkar, Kedar
AU - Zhang, Hua
N1 - Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Nature Limited.
PY - 2021/8
Y1 - 2021/8
N2 - 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.
AB - 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.
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U2 - 10.1038/s41563-021-00971-y
DO - 10.1038/s41563-021-00971-y
M3 - Article
C2 - 33859384
AN - SCOPUS:85104751146
SN - 1476-1122
VL - 20
SP - 1113
EP - 1120
JO - Nature Materials
JF - Nature Materials
IS - 8
ER -