Mechanisms of nonequilibrium electron-phonon coupling and thermal conductance at interfaces

2015 ◽  
Vol 117 (10) ◽  
pp. 105105 ◽  
Author(s):  
Ashutosh Giri ◽  
John T. Gaskins ◽  
Brian F. Donovan ◽  
Chester Szwejkowski ◽  
Ronald J. Warzoha ◽  
...  
Keyword(s):  
Thermal Conductance ◽  
Phonon Coupling ◽  
Nonequilibrium Electron ◽  
Electron Phonon Coupling

Thermal conductance and electron-phonon coupling in mechanically suspended nanostructures

2002 ◽  
Vol 81 (1) ◽  
pp. 31-33 ◽  
Author(s):  
C. S. Yung ◽  
D. R. Schmidt ◽  
A. N. Cleland
Keyword(s):  
Thermal Conductance ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

Thermal conductance magneto-oscillations and electron-phonon coupling in GaAs/AlGaAs heterostructures

1988 ◽  
Vol 196 (1-3) ◽  
pp. 445-450 ◽  
Author(s):  
J.P. Eisenstein ◽  
A.C. Gossard ◽  
V. Narayanamurti
Keyword(s):  
Thermal Conductance ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

Thermal conductance of electrons in graphene and stanene ribbons modulated via electron-phonon coupling

2017 ◽  
Vol 122 (5) ◽  
pp. 054302 ◽  
Author(s):  
Xiao-Fang Peng ◽  
Xin Zhou ◽  
Xiang-Tao Jiang ◽  
Ren-Bin Gao ◽  
Shi-Hua Tan ◽  
...  
Keyword(s):  
Thermal Conductance ◽  
Phonon Coupling ◽  
Electron Phonon Coupling

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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