Anisotropic Hot-Electron Kinetics Revealed by Terahertz Fluctuation

ACS Photonics ◽  
2021 ◽  
Author(s):  
Le Yang ◽  
Zhenghua An ◽  
Ruijie Qian ◽  
Hong Pan ◽  
Pingping Chen ◽  
...  
Keyword(s):  
Hot Electron ◽  
Electron Kinetics

scholarly journals HOT-ELECTRON TRANSPORT IN QUANTUM-DOT PHOTODETECTORS

2008 ◽  
Vol 18 (04) ◽  
pp. 1013-1022 ◽  
Author(s):  
L. H. CHIEN ◽  
A. SERGEEV ◽  
N. VAGIDOV ◽  
V. MITIN
Keyword(s):  
Electron Transport ◽  
Quantum Dot ◽  
Electric Field ◽  
Electric Fields ◽  
Hot Electron ◽  
Potential Relief ◽  
Potential Barriers ◽  
Electron Kinetics ◽  
Unintentional Doping ◽  
Hot Electron Transport

Employing Monte-Carlo simulations we investigate effects of an electric field on electron kinetics and transport in quantum-dot structures with potential barriers created around dots via intentional or unintentional doping. Results of our simulations demonstrate that the photoelectron capture is substantially enhanced in strong electric fields and this process has an exponential character. Detailed analysis shows that effects of the electric field on electron capture in the structures with barriers are not sensitive to the redistribution of electrons between valleys and these effects are not related to an increase of drift velocity. Most data find adequate explanation in the model of hot-electron transport in the potential relief of quantum dots. Electron kinetics controllable by potential barriers and an electric field may provide significant improvements in the photoconductive gain, detectivity, and responsivity of photodetectors.

FIELD DEPENDENT SCATTERING AND HOT ELECTRON KINETICS

1981 ◽  
Vol 42 (C7) ◽  
pp. C7-277-C7-282 ◽  
Author(s):  
D. C. Herbert ◽  
S. J. Till
Keyword(s):  
Hot Electron ◽  
Electron Kinetics ◽  
Field Dependent

Field dependent scattering and hot electron kinetics

Physica B+C ◽  
1983 ◽  
Vol 117-118 ◽  
pp. 217-219
Author(s):  
D.C. Herbert ◽  
S.J. Till
Keyword(s):  
Hot Electron ◽  
Electron Kinetics ◽  
Field Dependent

Effect of hot electron kinetics on self-reflectivity of warm dense gold irradiated with femtosecond laser pulses

2021 ◽  
pp. 150073
Author(s):  
Minju Kim ◽  
Jae Hyung Jung ◽  
Seong Hyeok Yang ◽  
Min Sang Cho ◽  
Gyeongbo Kang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Hot Electron ◽  
Electron Kinetics

Trade-off study of the SQUID read-out for a hot-electron micro-calorimeter

1998 ◽  
Vol 08 (PR3) ◽  
pp. Pr3-233-Pr3-236
Author(s):  
M. Frericks ◽  
H. F.C. Hoevers ◽  
P. de Groene ◽  
W. A. Mels ◽  
P. A.J. de Korte
Keyword(s):  
Hot Electron ◽  
Trade Off ◽  
Micro Calorimeter

Colloidal Plasmonic Nanostar Antennas with Wide Range Resonance Tunability

2019 ◽  
Author(s):  
Theodoros Tsoulos ◽  
Supriya Atta ◽  
Maureen Lagos ◽  
Michael Beetz ◽  
Philip Batson ◽  
...  
Keyword(s):  
Single Particle ◽  
Structural Complexity ◽  
Field Enhancement ◽  
Hot Electron ◽  
Structure Property ◽  
Plasmon Band ◽  
Gold Nanostars ◽  
Wide Range ◽  
Particle Level ◽  
Spectrally Resolved

<div>Gold nanostars display exceptional field enhancement properties and tunable resonant modes that can be leveraged to create effective imaging tags or phototherapeutic agents, or to design novel hot-electron based photocatalysts. From a fundamental standpoint, they represent important tunable platforms to study the dependence of hot carrier energy and dynamics on plasmon band intensity and position. Toward the realization of these platforms, holistic approaches taking into account both theory and experiments to study the fundamental behavior of these</div><div>particles are needed. Arguably, the intrinsic difficulties underlying this goal stem from the inability to rationally design and effectively synthesize nanoparticles that are sufficiently monodispersed to be employed for corroborations of the theoretical results without the need of single particle experiments. Herein, we report on our concerted computational and experimental effort to design, synthesize, and explain the origin and morphology-dependence of the plasmon modes of a novel gold nanostar system, with an approach that builds upon the well-known plasmon hybridization model. We have synthesized monodispersed samples of gold nanostars with finely tunable morphology employing seed-mediated colloidal protocols, and experimentally observed narrow and spectrally resolved harmonics of the primary surface plasmon resonance mode both at the single particle level (via electron energy loss spectroscopy) and in ensemble (by UV-Vis and ATR-FTIR spectroscopies). Computational results on complex anisotropic gold nanostructures are validated experimentally on samples prepared colloidally, underscoring their importance as ideal testbeds for the study of structure-property relationships in colloidal nanostructures of high structural complexity.</div>

Prospects of Time-Resolved Photon Emission as a Debug Tool

2002 ◽  
Author(s):  
Jim Vickers ◽  
Nader Pakdaman ◽  
Steven Kasapi
Keyword(s):  
Photon Emission ◽  
Photon Counting ◽  
Signal Propagation ◽  
General Function ◽  
Hot Electron ◽  
Detector Performance ◽  
Time Resolved ◽  
Switching Event ◽  
Emission System

Abstract Dynamic hot-electron emission using time-resolved photon counting can address the long-term failure analysis and debug requirements of the semiconductor industry's advanced devices. This article identifies the detector performance parameters and components that are required to scale and keep pace with the industry's requirements. It addresses the scalability of dynamic emission with the semiconductor advanced device roadmap. It is important to understand the limitations to determining that a switching event has occurred. The article explains the criteria for event detection, which is suitable for tracking signal propagation and looking for logic or other faults in which timing is not critical. It discusses conditions for event timing, whose goal is to determine accurately when a switching event has occurred, usually for speed path analysis. One of the uses of a dynamic emission system is to identify faults by studying the emission as a general function of time.

Rectification in Chiral Carbon Nanotubes with Hot Electron Injection

2020 ◽  
Vol 131 (3) ◽  
pp. 456-459
Author(s):  
S. S. Abukari ◽  
R. Musah ◽  
M. Amekpewu ◽  
S. Y. Mensah ◽  
N. G. Mensah ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electron Injection ◽  
Hot Electron ◽  
Hot Electron Injection ◽  
Chiral Carbon
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