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We designed solution-processed, flexible hybrid graphene flake/2H-MoS2 quantum dot (QD) heterostructures, showing enhanced electrocatalytic activity for the hydrogen evolution reaction (HER) with respect to their native individual…

Two-dimensional transition metal dichalcogenides (TMDCs) are promising materials for next-generation optoelectronic devices, yet their implementation is hindered by limited sample stability and challenges in forming reliable electrical…

The existence of bound charge transfer (CT) excitons at the interface of monolayer lateral heterojunctions has been debated in literature, but contrary to the case of interlayer excitons in vertical heterostructure their observation still…

Type-II heterostructures (HSs) are essential components of modern electronic and optoelectronic devices. Earlier studies have found that in type-II transition metal dichalcogenide (TMD) HSs, the dominating carrier relaxation pathway is the…

Heterostructures formed by stacking layered materials require atomically clean interfaces. However, contaminants are usually trapped between the layers, aggregating into blisters. We report a process to remove such blisters, resulting in…

Mesoscale and Nanoscale Physics · Physics 2019-04-03 D. G. Purdie , N. M. Pugno , T. Taniguchi , K. Watanabe , A. C. Ferrari , A. Lombardo

The strong spin$-$orbit coupling (SOC) and numerous crystal phases in few$-$layer transition metal dichalcogenides (TMDCs) MX$_2$ (M$=$W, Mo, and X$=$Te, Se, S) has led to a variety of novel physics, such as Ising superconductivity and…

Two-dimensional (2D) materials, such as graphene1, boron nitride2, and transition metal dichalcogenides (TMDs)3-5, have sparked wide interest in both device physics and technological applications at the atomic monolayer limit. These 2D…

Superconducting layered transition metal dichalcogenides (TMDs) stand out among other superconductors due to the tunable nature of the superconducting transition, coexistence with other collective electronic excitations (charge density…

The phenomenon of a partial 2H\rightarrow1T phase transition within multiwalled WS2 nanotubes under substitutional Rhenium doping is discovered by means of high-resolution transmission electron microscopy. Using density-functional…

We explore the electronic structure and topological phase diagram of heterostructures formed of graphene and ternary bismuth tellurohalide layers. We show that mechanical strain inherently present in fabricated samples could induce a…

Mesoscale and Nanoscale Physics · Physics 2020-06-24 Zoltán Tajkov , Dávid Visontai , László Oroszlány , János Koltai

We study in-plane lateral heterostructures of commensurate transition-metal dichalcogenides, such as MoS$_{2}$-WS$_{2}$ and MoSe$_{2}$-WSe$_{2}$, and find interfacial and edge states that are highly localized to these regions of the…

Mesoscale and Nanoscale Physics · Physics 2019-01-04 Oscar Ávalos-Ovando , Diego Mastrogiuseppe , Sergio E. Ulloa

The discovery of two-dimensional transition metal dichalcogenides (2D TMDs) has promised next-generation photonics and optoelectronics applications, particularly in the realm of nanophotonics. Arguably, the most crucial fundamental…

Materials Science · Physics 2020-01-22 Kwang Jin Lee , Wei Xin , Chunhao Fann , Xinli Ma , Fei Xing , Jing Liu , Jihua Zhang , Mohamed Elkabbash , Chunlei Guo

Ultrafast light-matter interaction has emerged as a powerful tool to control and probe the macroscopic properties of functional materials, especially two-dimensional transition metal dichalcogenides which can form different structural…

Mesoscale and Nanoscale Physics · Physics 2023-10-10 XinYu Zhou , H Wang , Q M Liu , S J Zhang , S X Xu , Q Wu , R S Li , L Yue , T C Hu , J Y Yuan , S S Han , T Dong , D Wu , N L Wang

Photo-induced phase transitions (PIPTs) provide an ultrafast, energy-efficient way for precisely manipulating the topological properties of transition-metal ditellurides, and can be used to stabilize a topological phase in an otherwise…

Materials Science · Physics 2020-06-23 Bo Peng , Hao Zhang , Weiwen Chen , Zhi-Jun Qiu , Hezhu Shao , Heyuan Zhu , Bartomeu Monserrat , Desheng Fu , Hongming Weng

Detail transport properties of graphene/MoS2/metal vertical heterostructure have been investigated. The van der Waals interface between the graphene and MoS2 exhibits Schottky barrier. The application of gate voltage to the graphene layer…

Mesoscale and Nanoscale Physics · Physics 2015-03-10 Yohta Sata , Rai Moriya , Takehiro Yamaguchi , Yoshihisa Inoue , Sei Morikawa , Naoto Yabuki , Satoru Masubuchi , Tomoki Machida

Layered transition-metal dichalcogenides have emerged as exciting material systems with atomically thin geometries and unique electronic properties. Pressure is a powerful tool for continuously tuning their crystal and electronic structures…

The layered transition metal dichalcogenides (TMDs) have attracted considerable interest due to their unique electronic and optical properties. Here we report electric field induced strong electroluminescence in multi-layer MoS2 and WSe2.…

Mesoscale and Nanoscale Physics · Physics 2015-10-20 Dehui Li , Rui Cheng , Hailong Zhou , Chen Wang , Anxiang Yin , Yu Chen , Nathan O. Weiss , Yu Huang , Xiangfeng Duan

Two-dimensional (2D) materials offer a valuable platform for manipulating and studying chemical reactions at atomic level, owing to the ease of controlling their microscopic structure at the nanometer scale. While extensive research has…

Chemical transformation of existing two-dimensional (2D) materials can be crucial in further expanding the 2D crystal palette required to realize various functional heterostructures. In this work, we demonstrate a 2D 'on-stack' chemical…

Research on graphene and other two-dimensional (2D) materials, such as silicene, germanene, phosphorene, hexagonal boron nitride (h-BN), graphitic carbon nitride (g-C3N4), graphitic zinc oxide (g-ZnO) and molybdenum disulphide (MoS2), has…

Materials Science · Physics 2016-03-03 Wei Hu , Jinlong Yang