Abstract The temperature-dependent (T= 4.5-500 K) optical constants of monolayer MoS 2,
MoSe 2, WS 2, and WSe 2 were investigated through spectroscopic ellipsometry over the …

Defects play an indispensable role in tuning the optical properties of two-dimensional
materials. Herein, we study the influence of defects on the photoluminescence and …

Following the rise of interest in the properties of transition metal dichalcogenides, many
experimental techniques were employed to research them. However, the temperature …

Probing phonons, quasiparticle excitations, and their coupling has enriched our
understanding of two-dimensional (2D) materials and proved to be crucial for developing …

Limited availability of photogenerated charge carriers in two-dimensional (2D) materials,
due to high exciton binding energies, is a major bottleneck in achieving efficient …

Grasping the intricate mechanisms for the influences of dielectric screening from diverse
substrates on the optical properties of ultra-thin two-dimensional materials is crucial for …

We report the temperature dependence of the dielectric function ε= ε 1+ iε 2 and critical point
(CP) energies of biaxial α-SnS in the spectral energy region from 0.74 to 6.42 eV and …

A Kubo formalism is used to calculate the electronic and optical conductivity of a graphene
superlattice with Y-shaped Kekulé bond texture, similar to that visualized in recent …

The optical properties of MoS2 and WS2 monolayers are significantly influenced by
fabrication methods, especially with respect to the behavior of excitons at the K− point of the …

The complex dielectric function ɛ= ɛ 1+ iɛ 2 of monolayer tungsten disulfide (WS 2) is
investigated for the energy range from 1.5 to 6.0 eV and temperatures from 41 to 300 K …