We demonstrate the continuous and reversible tuning of the optical band gap of suspended
monolayer MoS2 membranes by as much as 500 meV by applying very large biaxial strains …

Raman spectroscopy is broadly used in the studies of transition metal dichalcogenides to
determine the number of layers or other structural parameters. However, unlike the case of …

Phonon-assisted photon upconversion (UPC) is an anti-Stokes process in which incident
photons achieve higher energy emission by absorbing phonons. This letter studies phonon …

Raman spectroscopy is one of the most important optical techniques for the study of two-
dimensional systems, providing fundamental information for the development of applications …

Raman spectra of few-layer MoSe2 were measured with eight excitation energies. New
peaks that appear only near resonance with various exciton states are analyzed, and the …

We present a transient absorption setup combining broadband detection over the visible–
UV range with high temporal resolution (∼ 20 fs) which is ideally suited to trigger and detect …

This work describes a resonance Raman study performed in the domes of monolayer MoS2
using 23 different laser excitation energies covering the visible and near-infrared (NIR) …

The isolation of graphene opened the gate to investigate a vast family of two-dimensional
(2D) layered materials. The concept of an exciton, an electron–hole pair (e–h) bound by …

The study of MoS2/metal interfaces is crucial for engineering efficient semiconductor–metal
contacts in 2D MoS2-based devices. Here we investigate a MoS2/Ag heterostructure …

Phonon-assisted upconversion photoluminescence (UPL) is an anti-Stokes process emitting
photons of energy higher than the excitation photons, with upconversion energy gain …