Search Results - "Pimenta, Marcos A."
-
1
Local Polar Fluctuations in Lead Halide Perovskite Crystals
Published in Physical review letters (28-03-2017)“…Hybrid lead-halide perovskites have emerged as an excellent class of photovoltaic materials. Recent reports suggest that the organic molecular cation is…”
Get full text
Journal Article -
2
Intervalley scattering by acoustic phonons in two-dimensional MoS2 revealed by double-resonance Raman spectroscopy
Published in Nature communications (09-03-2017)“…Double-resonance Raman scattering is a sensitive probe to study the electron-phonon scattering pathways in crystals. For semiconducting two-dimensional…”
Get full text
Journal Article -
3
Charge-Transfer Mechanism in Graphene-Enhanced Raman Scattering
Published in Journal of physical chemistry. C (29-11-2012)“…In the chemical enhancement mechanism for Raman scattering, the two types of charge-transfer models, the excited-state and the ground-state charge-transfer…”
Get full text
Journal Article -
4
Comparative Study of Raman Spectroscopy in Graphene and MoS2‑type Transition Metal Dichalcogenides
Published in Accounts of chemical research (20-01-2015)“…Raman spectroscopy is one of the most powerful experimental tools to study graphene, since it provides much useful information for sample characterization. In…”
Get full text
Journal Article -
5
Excited Excitonic States in 1L, 2L, 3L, and Bulk WSe2 Observed by Resonant Raman Spectroscopy
Published in ACS nano (23-09-2014)“…Resonant Raman spectroscopy (RRS) is a very useful tool to study physical properties of materials since it provides information about excitons and their…”
Get full text
Journal Article -
6
Visible Out-of-plane Polarized Luminescence and Electronic Resonance in Black Phosphorus
Published in Nano letters (13-04-2022)“…Black phosphorus (BP) is unique among layered materials because of its homonuclear lattice and strong structural anisotropy. While recent investigations on…”
Get full text
Journal Article -
7
Ultrasensitive molecular sensor using N-doped graphene through enhanced Raman scattering
Published in Science advances (01-07-2016)“…As a novel and efficient surface analysis technique, graphene-enhanced Raman scattering (GERS) has attracted increasing research attention in recent years. In…”
Get full text
Journal Article -
8
Third and fourth optical transitions in semiconducting carbon nanotubes
Published in Physical review letters (09-02-2007)“…We have studied the optical transition energies of single-wall carbon nanotubes over broad diameter (0.7-2.3 nm) and energy (1.26-2.71 eV) ranges, using their…”
Get full text
Journal Article -
9
Chemical Vapor Deposition Synthesis of N-, P-, and Si-Doped Single-Walled Carbon Nanotubes
Published in ACS nano (23-03-2010)“…Here we report the synthesis of single-walled carbon nanotube bundles by chemical vapor deposition in the presence of electron donor elements (N, P, and Si)…”
Get full text
Journal Article -
10
Exciton–Phonon Interactions in Strained Domes of Monolayer MoS2 Studied by Resonance Raman Spectroscopy
Published in Nanomaterials (Basel, Switzerland) (07-10-2023)“…This work describes a resonance Raman study performed in the domes of monolayer MoS2 using 23 different laser excitation energies covering the visible and…”
Get full text
Journal Article -
11
Direct experimental evidence of exciton-phonon bound states in carbon nanotubes
Published in Physical review letters (09-12-2005)“…We present direct experimental observation of exciton-phonon bound states in the photoluminescence excitation spectra of isolated single-walled carbon…”
Get full text
Journal Article -
12
Symmetry-dependent exciton-phonon coupling in 2D and bulk MoS2 observed by resonance Raman scattering
Published in Physical review letters (03-04-2015)“…This work describes a resonance Raman study performed on samples with one, two, and three layers (1L, 2L, 3L), and bulk MoS2, using more than 30 different…”
Get full text
Journal Article -
13
Dramatic increase in the Raman signal of functional groups on carbon nanotube surfaces
Published in Carbon (New York) (01-05-2013)“…Raman spectra of octadecylamine (ODA) molecules covalently bound to the surface of single walled carbon nanotubes were obtained by varying the laser excitation…”
Get full text
Journal Article -
14
Multiple-excitation study of the double-resonance Raman bands in rhombohedral graphite
Published in Carbon (New York) (01-07-2021)“…The double-resonance (DR) Raman process is a signature of all sp2 carbon material and provide fundamental information of the electronic structure and phonon…”
Get full text
Journal Article -
15
Raman spectroscopy in black phosphorus
Published in Journal of Raman spectroscopy (01-01-2018)“…In this article, we review the current status of Raman spectroscopy in orthorhombic black phosphorus (BP) (for simplicity, henceforth, referred to as BP). BP…”
Get full text
Journal Article -
16
Unusual Angular Dependence of the Raman Response in Black Phosphorus
Published in ACS nano (28-04-2015)“…Anisotropic materials are characterized by a unique optical response, which is highly polarization-dependent. Of particular interest are layered materials…”
Get full text
Journal Article -
17
Nonlinear Dark-Field Imaging of One-Dimensional Defects in Monolayer Dichalcogenides
Published in Nano letters (08-01-2020)“…One-dimensional defects in two-dimensional (2D) materials can be particularly damaging because they directly impede the transport of charge, spin, or heat and…”
Get full text
Journal Article -
18
Electron and phonon renormalization near charged defects in carbon nanotubes
Published in Nature materials (01-11-2008)“…Owing to their influence on electrons and phonons, defects can significantly alter electrical conductance, and optical, mechanical and thermal properties of a…”
Get full text
Journal Article -
19
The Kataura plot over broad energy and diameter ranges
Published in Physica Status Solidi (b) (01-11-2006)“…The theoretical plot presenting the optical transition energies for carbon nanotubes as a function of tube diameter was proposed in 1999 and became the most…”
Get full text
Journal Article Conference Proceeding -
20
Giant Valley Zeeman Splitting in Vanadium-Doped WSe2 Monolayers
Published in Small (Weinheim an der Bergstrasse, Germany) (08-10-2024)“…2D dilute magnetic semiconductors (DMS) based on transition metal dichalcogenides (TMD) offer an innovative pathway for advancing spintronic technologies,…”
Get full text
Journal Article