نتایج جستجو برای: transition metal dichalcogenides
تعداد نتایج: 436925 فیلتر نتایج به سال:
It is shown that the strong Coulomb coupling in intrinsic suspended semiconducting transition metal dichalcogenides can exceed the critical value needed for an excitonic ground state. The dipole-allowed optical excitations then correspond to intra-excitonic transitions such that the optically bright excitonic transitions near the Dirac points have a p-like symmetry, whereas the s-like states ar...
Semiconductor heterostructures are fundamental building blocks for many important device applications. The emergence of two-dimensional semiconductors opens up a new realm for creating heterostructures. As the bandgaps of transition metal dichalcogenides thin films have sensitive layer dependence, it is natural to create lateral heterojunctions (HJs) using the same materials with different thic...
The photocurrent conversions of transition metal dichalcogenide nanosheets are unprecedentedly impressive, making them great candidates for visible range photodetectors. Here we demonstrate a method for fabricating micron-thick, flexible films consisting of a variety of highly separated transition metal dichalcogenide nanosheets for excellent band-selective photodetection. Our method is based o...
Inelastic X-ray scattering spectroscopies form a versatile family of experimental techniques that are capable of probing the ground state properties as well as the single-particle and collective excitations of condensed-matter systems. Electronic excitations are of fundamental importance in determining the optical and transport properties of solids and also take part in the screening of the Cou...
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