115 citations · 274 across the 12 of their papers we have counts for
12 papers
Tunable Interlayer Excitons in Bilayer Graphene Nanoribbons
Alexandre R. Rocha, Rodrigo G. Amorim, Wanderlã L. Scopel +1
Vertically stacked van der Waals structures are promising platforms that enable layer engineering, opening new avenues for the quantum control of elementary excitations, including…
Determining Exciton Binding Energy and Reduced Effective Mass in Metal Tri-Halide Perovskites from Optical and Impedance Spectroscopy Measurements
K. Lizárraga, J. A. Guerra, L. A. Enrique-Moran +5
Accurate determination of the exciton binding energy and reduced effective mass in halide perovskites is of utmost importance for the selective design of optoelectronic devices. Al…
Optical properties of TiS as a novel thin film for single-junction and tandem solar cells
Cesar E. P. Villegas, Enesio Marinho, A. C. Dias +2
Sub-micrometer thin films are promising platforms for emerging flexible photovoltaic devices. Although the current market already produces efficient solar cells, the average wafer…
Probing Water-Electrified Electrode interfaces: Insights from Au and Pd
Graciele M. Arvelos, Marivi Fernández-Serra, Alexandre R. Rocha +1
The water/electrode interface under an applied bias potential is a challenging out-of-equilibrium phenomenon, which is difficult to accurately model at the atomic scale. In this st…
Suppression of the Mott insulating phase in the particle-hole asymmetric Hubbard model
Mateus Marques, Bruno M. de Souza Melo, Alexandre R. Rocha +2
We explore the phase diagram of the Mott metal-insulator transition (MIT), focusing on the effects of particle-hole asymmetry (PHA) in the single-band Hubbard model. Our dynamical…
Screened hydrogen model of excitons in semiconducting nanoribbons
Cesar E. P. Villegas, Alexandre R. Rocha
The optical response of quasi-one-dimensional systems is often dominated by tightly bound excitons, that significantly influence their basic electronic properties. Despite their im…
Photovoltaic efficiency of transition metal dichalcogenides thin films by ab initio excited-state methods
Enesio Marinho, Cesar E. P. Villegas, Pedro Venezuela +1
Transition metal dichalcogenides (TMDCs) have garnered significant interest in optoelectronics, owing to their scalability and thickness-dependent electrical and optical properties…
Many-body effects on the quasiparticle band structure and optical response of single-layer penta-NiN
Enesio Marinho, Cesar E. P. Villegas, Pedro Venezuela +1
We present a comprehensive first-principles study on the optoelectronic properties of the single-layer nickel diazenide (penta-NiN), a recently synthesized Cairo pentagonal 2D…
Efficient hot carrier dynamics in near-infrared photocatalytic metals
Cesar E. P. Villegas, Marina S. Leite, Andrea Marini +1
Photoexcited metals can produce highly-energetic hot carriers whose controlled generation and extraction is a promising avenue for technological applications. While hot carrier dyn…
Electron-phonon scattering effects on electronic and optical properties of orthorhombic GeS
Cesar E. P. Villegas, A. R. Rocha, A. Marini
Group-VI monochalcogenides are attracting a great deal of attention due to their peculiar anisotropic properties. Very recently, it has been suggested that GeS could act as a promi…
Anomalous temperature dependence of the band-gap in Black Phosphorus
Cesar E. P. Villegas, A. R. Rocha, Andrea Marini
Black Phosphorus (BP) has gained renewed attention due to its singular anisotropic electronic and optical properties that might be exploited for a wide range of technological appli…
Edge phonons in black phosphorus
H. B. Ribeiro, C. E. P. Villegas, D. A. Bahamon +6
Exfoliated black phosphorus has recently emerged as a new two-dimensional crystal that, due to its peculiar and anisotropic crystalline and electronic band structures, may have pot…