نتایج جستجو برای: molybdenum diselenide
تعداد نتایج: 14293 فیلتر نتایج به سال:
Monolayer molybdenum disulfide (MoS2) has become a promising building block in optoelectronics for its high photosensitivity. However, sulfur vacancies and other defects significantly affect the electrical and optoelectronic properties of monolayer MoS2 devices. Here, highly crystalline molybdenum diselenide (MoSe2) monolayers have been successfully synthesized by the chemical vapor deposition ...
We study valley and spin dynamics in monolayer molybdenum diselenide by polarization-resolved femtosecond transient absorption spectroscopy. Valley- and spin-polarized excitons are injected by a circularly polarized laser pulse, with an excess energy of 120 meV. Relaxation of the valley polarization is time-resolved by measuring dynamical circular dichroism of a linearly polarized probe pulse t...
The performance of electronic and optoelectronic devices based on two-dimensional layered crystals, including graphene, semiconductors of the transition metal dichalcogenide family such as molybdenum disulphide (MoS2) and tungsten diselenide (WSe2), as well as other emerging two-dimensional semiconductors such as atomically thin black phosphorus, is significantly affected by the electrical cont...
Using the technique of impedance spectroscopy, data on effect magnitude variable signal and constant bias kinetic characteristics Ag x MoSe 2 samples were obtained. The temperature parameters spectra studied compounds their dielectric characteristics, which analyzed within framework electrical modulus formalism, is also shown. Keywords: impedance, intercalates, molybdenum diselenide, silver, pe...
We develop a low-energy continuum model for phonons in twisted moir\'e bilayers, based on configuration-space approach. In this approach, interatomic force constants are obtained from density functional theory (DFT) calculations of untwisted bilayers with various in-plane shifts. This allows efficient computation phonon properties any small twist angle, while maintaining DFT-level accuracy. Bas...
Pulsed laser vaporization has been used to produce nanooctahedra of MoS2 and MoSe2. The nanooctahedra primarily form in two- or three-layer nested octahedra, although nesting up to five layers has been observed. Tilting the TEM sample stage and mapping how the images of single particles transformed provided the evidence to verify their octahedral geometry. Analysis of 30 two- and three-layered ...
Thioredoxin reductase (TrxR) isoforms play important roles in cell physiology, protecting cells against oxidative processes. In addition to its endogenous substrates (Trx isoforms), hepatic TrxR can reduce organic selenium compounds such as ebselen and diphenyl diselenide to their selenol intermediates, which can be involved in their hepatoprotective properties. Taking this into account, the ai...
Excitons in monolayer transition metal dichalcogenides (TMDs) provide a paradigm of composite Boson two-dimensional system. This Letter reports photoluminescence and reflectance study excitons molybdenum diselenide (MoSe2) with electrostatic gating. We observe the repulsive attractive Fermi polaron modes band edge exciton, its excited state, spin-off excitons, which simple three-particle trion ...
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