First principles calculation of the shift current photovoltaic effect in ferroelectrics
SM Young, AM Rappe - Physical review letters, 2012 - APS
We calculate the bulk photovoltaic response of the ferroelectrics BaTiO 3 and PbTiO 3 from
first principles by applying the “shift current” theory to the electronic structure from density …
first principles by applying the “shift current” theory to the electronic structure from density …
Ultrafast zero-bias photocurrent in GeS nanosheets: Promise for photovoltaics
Ferroelectric semiconductors have been predicted to exhibit strong zero-bias shift current,
spurring the search for ferroelectric semiconductors with band gaps in the visible range as …
spurring the search for ferroelectric semiconductors with band gaps in the visible range as …
Topological aspects of nonlinear excitonic processes in noncentrosymmetric crystals
T Morimoto, N Nagaosa - Physical Review B, 2016 - APS
We study excitonic processes second order in the electric fields in noncentrosymmetric
crystals. We derive formulas for shift current and second harmonic generation produced by …
crystals. We derive formulas for shift current and second harmonic generation produced by …
Terahertz emission spectroscopy of ultrafast exciton shift current in the noncentrosymmetric semiconductor CdS
The charge-neutral exciton has been predicted to carry genuine photocurrent due to the
geometric Berry phase of the electronic bands, if the inversion symmetry in a crystal is …
geometric Berry phase of the electronic bands, if the inversion symmetry in a crystal is …
Ultrafast zero-bias photocurrent and terahertz emission in hybrid perovskites
Methylammonium lead iodide is a benchmark hybrid organic perovskite material used for
low-cost printed solar cells with a power conversion efficiency of over 20%. Nevertheless …
low-cost printed solar cells with a power conversion efficiency of over 20%. Nevertheless …
Jerk current: a novel bulk photovoltaic effect
We investigate a physical divergence of the third order polarization susceptibility
representing a photoinduced current in biased crystalline insulators. This current grows …
representing a photoinduced current in biased crystalline insulators. This current grows …
Ultrafast zero-bias surface photocurrent in germanium selenide: promise for terahertz devices and photovoltaics
Theory predicts that a large spontaneous electric polarization and concomitant inversion
symmetry breaking in GeSe monolayers result in a strong shift current in response to their …
symmetry breaking in GeSe monolayers result in a strong shift current in response to their …
Ultrafast Shift Current in SnS2 Single Crystals: Structure Considerations, Modeling, and THz Emission Spectroscopy
K Kushnir Friedman… - Advanced Optical …, 2024 - Wiley Online Library
Above‐band gap optical excitation of non‐centrosymmetric semiconductors can lead to the
spatial shift of the center of electron charge in a process known as shift current. Shift current …
spatial shift of the center of electron charge in a process known as shift current. Shift current …
The shift current photovoltaic effect response in wurtzite and zinc blende semiconductors via first-principles calculations
Y Qiu, Y Sun, HX Shen, HX Fu, MY Duan… - Physical Chemistry …, 2024 - pubs.rsc.org
Recently, the search for materials with high photoelectric conversion efficiency has emerged
as a significant research hotspot. Unlike p–n junctions, the bulk photovoltaic effect (BPVE) …
as a significant research hotspot. Unlike p–n junctions, the bulk photovoltaic effect (BPVE) …
Detection of the anomalous velocity with subpicosecond time resolution in semiconductor nanostructures
We report on the time-resolved detection of the anomalous velocity, constituting charge
carriers moving perpendicular to an electric driving field, in undoped GaAs quantum wells …
carriers moving perpendicular to an electric driving field, in undoped GaAs quantum wells …