Phonon dynamics and electron–phonon coupling in pristine picene

2012 ◽  
Vol 14 (5) ◽  
pp. 1694-1699 ◽  
Author(s):  
Alberto Girlando ◽  
Matteo Masino ◽  
Ivano Bilotti ◽  
Aldo Brillante ◽  
Raffaele G. Della Valle ◽  
...  
Keyword(s):  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Phonon Dynamics

Two-dimensional electronic spectroscopy of anharmonic molecular potentials

2018 ◽  
Vol 20 (3) ◽  
pp. 1642-1652 ◽  
Author(s):  
André Anda ◽  
Darius Abramavičius ◽  
Thorsten Hansen
Keyword(s):  
Electronic Spectroscopy ◽  
Two Dimensional ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Phonon Dynamics ◽  
Molecular Potentials

Two-dimensional electronic spectroscopy (2DES) is a powerful tool in the study of coupled electron–phonon dynamics, yet very little is known about how nonlinearities in the electron–phonon coupling, arising from anharmonicities in the nuclear potentials, affect the spectra.

scholarly journals Ultrafast Hot Phonon Dynamics in MgB2 Driven by Anisotropic Electron-Phonon Coupling

2020 ◽  
Vol 124 (7) ◽  
Author(s):  
Dino Novko ◽  
Fabio Caruso ◽  
Claudia Draxl ◽  
Emmanuele Cappelluti
Keyword(s):  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Phonon Dynamics

scholarly journals Mapping momentum-dependent electron-phonon coupling and non-equilibrium phonon dynamics with ultrafast electron diffuse scattering

2019 ◽  
Vol 205 ◽  
pp. 08013
Author(s):  
Mark J. Stern ◽  
Laurent P. René de Cotret ◽  
Martin R. Otto ◽  
Robert P. Chatelain ◽  
Jean-Philippe Boisvert ◽  
...  
Keyword(s):  
Inelastic Scattering ◽  
Energy Resolution ◽  
Brillouin Zone ◽  
Time Resolution ◽  
Diffuse Scattering ◽  
Phonon Coupling ◽  
Selection Rules ◽  
Electron Phonon Coupling ◽  
Phonon Dynamics ◽  
Non Equilibrium

We show that ultrafast electron diffuse (inelastic) scattering provides a detailed, momentum-resolved view of electron-phonon and phonon-phonon coupling across the entire Brillouin zone. Ultrafast time-resolution and scattering selection rules can distinguish between phonon branches without energy-resolution.

Coherent Phonon Dynamics in Semiconducting Carbon Nanotubes: A Quantitative Study of Electron-Phonon Coupling

2009 ◽  
Vol 102 (12) ◽  
Author(s):  
Larry Lüer ◽  
Christoph Gadermaier ◽  
Jared Crochet ◽  
Tobias Hertel ◽  
Daniele Brida ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Quantitative Study ◽  
Coherent Phonon ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Phonon Dynamics

Pronounced exciton and coherent phonon dynamics in BiI3

2018 ◽  
Vol 20 (16) ◽  
pp. 10677-10685 ◽  
Author(s):  
Mirko Scholz ◽  
Kawon Oum ◽  
Thomas Lenzer
Keyword(s):  
Transient Absorption ◽  
Coherent Phonon ◽  
Phonon Coupling ◽  
Strong Electron ◽  
Electron Phonon Coupling ◽  
Phonon Dynamics

Long-lived coherent oscillations in transient absorption signals of BiI3 suggest strong electron–phonon coupling in this material for photovoltaics.

scholarly journals Mapping momentum-dependent electron-phonon coupling and nonequilibrium phonon dynamics with ultrafast electron diffuse scattering

2018 ◽  
Vol 97 (16) ◽  
Author(s):  
Mark J. Stern ◽  
Laurent P. René de Cotret ◽  
Martin R. Otto ◽  
Robert P. Chatelain ◽  
Jean-Philippe Boisvert ◽  
...  
Keyword(s):  
Diffuse Scattering ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Phonon Dynamics

Observation of Core Phonon in Electron–Phonon Coupling in Au25 Nanoclusters

2021 ◽  
Vol 12 (6) ◽  
pp. 1690-1695
Author(s):  
Zhongyu Liu ◽  
Yingwei Li ◽  
Wonyong Shin ◽  
Rongchao Jin
Keyword(s):  
Phonon Coupling ◽  
Electron Phonon Coupling

scholarly journals Electron-phonon coupling in the magnetic Weyl semimetal ZrCo2Sn

2021 ◽  
Vol 103 (2) ◽  
Author(s):  
I.Yu. Sklyadneva ◽  
R. Heid ◽  
P. M. Echenique ◽  
E. V. Chulkov
Keyword(s):  
Phonon Coupling ◽  
Weyl Semimetal ◽  
Electron Phonon Coupling

scholarly journals Dielectric screening in perovskite photovoltaics

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Rui Su ◽  
Zhaojian Xu ◽  
Jiang Wu ◽  
Deying Luo ◽  
Qin Hu ◽  
...  
Keyword(s):  
Open Circuit Voltage ◽  
Low Voltage ◽  
Power Conversion ◽  
Surface Recombination ◽  
Open Circuit ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Dielectric Screening ◽  
Perovskite Photovoltaic ◽  
Reduced Surface

AbstractThe performance of perovskite photovoltaics is fundamentally impeded by the presence of undesirable defects that contribute to non-radiative losses within the devices. Although mitigating these losses has been extensively reported by numerous passivation strategies, a detailed understanding of loss origins within the devices remains elusive. Here, we demonstrate that the defect capturing probability estimated by the capture cross-section is decreased by varying the dielectric response, producing the dielectric screening effect in the perovskite. The resulting perovskites also show reduced surface recombination and a weaker electron-phonon coupling. All of these boost the power conversion efficiency to 22.3% for an inverted perovskite photovoltaic device with a high open-circuit voltage of 1.25 V and a low voltage deficit of 0.37 V (a bandgap ~1.62 eV). Our results provide not only an in-depth understanding of the carrier capture processes in perovskites, but also a promising pathway for realizing highly efficient devices via dielectric regulation.

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