2019年2月12日 · We design a kinetically-controlled regime of colloidal synthesis to enable the formation of the metastable phase. 1T’ WSe 2 branched few-layered nanosheets are produced in high yield and in a...

2018年5月21日 · In this work, we show that single layers of WSe 2 can be prepared instead in the 1 T ′ phase, which is topological with a gap of 129 meV based on angle-resolved photoemission spectroscopy...

2021年4月15日 · Here, we report a general synthetic method for the large-scale preparation of metastable 1T′-phase group VIB TMDs, including WS 2, WSe 2, MoS 2, MoSe 2, WS 2x Se 2 (1−x) and MoS 2x Se 2 (1−x)....

2020年12月31日 · Based on first-principle calculations in this work, it is found that the 1T’ phase could be more stable than 2H phase with enhanced interface interactions. Inspired by this discovery, SrTiO 3 (100) is chosen as substrate and WSe 2 monolayer is successfully grown in a 100% single 1T’ phase using the molecular beam epitaxial method.

2022年7月1日 · Here, we demonstrate the synthesis of 1T′ WSe 2 on a substrate by a simple heating-up method using a single precursor, tetraethylammonium tetraselenotungstate [(Et 4 N) 2 WSe 4]. The triethylamine produced after the reaction is an electron donor that yields negatively charged WSe 2 , which is stabilized by triethylammonium cations as ...

2021年1月4日 · 南京大学物理学院张翼课题组与相关合作者借助增强的界面相互作用，首次实现了单一纯相的单元胞层1T’-WSe2在SrTiO­3(100)衬底上的外延生长。 1T’结构相的单元胞层二维过渡金属硫化物家族MX2（M = Mo，W, X = S, ...

2020年5月19日 · Using angle-resolved photoemission spectroscopy and scanning tunneling microscopy/spectroscopy, we determine that 1T′–WSe 2 exhibits a large bulk bandgap of 120 meV, and edge states at the 1T′–1H lateral heterojunction extend within 1.6 nm from the heterointerface at the 1T′ side.

2018年5月20日 · Here, we report the successful growth on bilayer graphene of a quasi-freestanding WSe2 single layer with the 1T' structure that does not exist in the bulk form of WSe2. Using angle-resolved photoemission spectroscopy (ARPES) and scanning tunneling microscopy/spectroscopy (STM/STS), we observe a gap of 129 meV in …

2022年4月27日 · With a dual strategy of phase-interface engineering, monolayer (1L)–1T-WSe 2 integrated with Ag 2 Se nanoparticles (NPs) is in situ fabricated as quasi-monolayer Ag 2 Se/1L–1T-WSe 2 hybrid nanosheets via a one-pot oleylamine-colloidal reaction.

2022年2月8日 · The experimental results show that 1 MeV electron irradiates WSe 2 to produce Se vacancies on the base surface to form 1T-WSe 2, which is the main reason for improving its performance. This effective and feasible electron irradiation method provides a new strategy for the controllable acquisition of 1T-WSe 2 and a new method for other similar ...