Thickness-Dependent Ultrafast Charge-Carrier Dynamics and Coherent Acoustic Phonon Oscillations in Mechanically Exfoliated PdSe2

2021 ◽  
Author(s):  
Chang-Fu Huo ◽  
Rui Wen ◽  
Xiao-Qing Yan ◽  
De-Kang Li ◽  
Kai-Xuan Huang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Charge Carrier ◽  
Acoustic Phonon ◽  
Optoelectronic Devices ◽  
Carrier Dynamics ◽  
Promising Material ◽  
Device Performance ◽  
Charge Carrier Dynamics ◽  
Potential Applications ◽  
Coherent Acoustic Phonon

Palladium diselenide (PdSe2) recently emerged as a promising material with potential applications in electronic and optoelectronic devices due to its intriguing electronic and optical properties. The device performance is strongly...

scholarly journals Carbon Nanotube Photophysics

MRS Bulletin ◽  
2004 ◽  
Vol 29 (4) ◽  
pp. 276-280 ◽  
Author(s):  
A. Jorio ◽  
R. Saito ◽  
T. Hertel ◽  
R.B. Weisman ◽  
G. Dresselhaus ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Charge Carrier ◽  
Carrier Dynamics ◽  
Optical Measurements ◽  
Future Research ◽  
Time Resolved ◽  
Van Hove Singularities ◽  
Charge Carrier Dynamics ◽  
Potential Applications ◽  
Photoluminescence Studies

AbstractIn single-walled carbon nanotubes (SWNTs), their electronic and vibrational structure as well as their charge-carrier dynamics are crucial for potential ultrasmall optical device applications. SWNT properties have now been obtained from optical absorption and time-resolved photoemission and, at the single-nanotube level, by resonance Raman scattering and photoluminescence studies. This article presents an overview of SWNT photophysics, discussing important findings for the characterization of carbon nanotube properties and directions for future research and potential applications. The unique optical properties observed in SWNTs are due to the one-dimensional confinement of electronic states, resulting in van Hove singularities in the nanotube density of states. Optical measurements of phonons, charge-carrier dynamics, and the electronic transition energy van Hove singularities are discussed.

Effect of dynamic disorder on charge carrier dynamics in Ph4DP and Ph4DTP molecules

RSC Advances ◽  
2015 ◽  
Vol 5 (48) ◽  
pp. 38722-38732 ◽  
Author(s):  
K. Navamani ◽  
K. Senthilkumar
Keyword(s):  
Optical Properties ◽  
Electronic Structure ◽  
Charge Carrier ◽  
Charge Transport ◽  
Electronic Structure Calculations ◽  
Carrier Dynamics ◽  
Dynamic Disorder ◽  
Charge Carrier Dynamics ◽  
Structure Calculations

Electronic structure calculations were used to study the charge transport and optical properties of 2,2′,6,6′-tetraphenyldipyranylidene (Ph4DP) and its sulfur analogue 2,2′,6,6′-tetraphenyldithiopyranylidene (Ph4DTP) based molecules.

Optical properties and charge carrier dynamics of CdTe quantum dots in silicate glasses

2017 ◽  
Vol 121 (18) ◽  
pp. 183104 ◽  
Author(s):  
Wenke Li ◽  
Wenchao Zhang ◽  
Mengling Xia ◽  
Chao Liu ◽  
Jing Wang
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Charge Carrier ◽  
Carrier Dynamics ◽  
Silicate Glasses ◽  
Cdte Quantum Dots ◽  
Charge Carrier Dynamics

First-Principles Study of Charge Carrier Dynamics with Explicit Treatment of Momentum Dispersion on Si Nanowires along crystallographic Directions

MRS Advances ◽  
2018 ◽  
Vol 3 (59) ◽  
pp. 3477-3482 ◽  
Author(s):  
Fatima ◽  
Jon Vogel ◽  
Talgat Inerbaev ◽  
Nuri Oncel ◽  
Dmitri Kilin
Keyword(s):  
Optical Properties ◽  
Charge Carrier ◽  
Density Functional ◽  
High Energy ◽  
Momentum Conservation ◽  
Carrier Dynamics ◽  
Ab Initio Molecular Dynamics ◽  
Ground State Structure ◽  
Si Nanowires ◽  
Charge Carrier Dynamics

ABSTRACTThe ground state structure, optical properties and charge carrier dynamics of silicon nanowire (SiNW) grown in <211> crystallographic direction is studied as a function of wavevector using density functional theory. This nanowire can be used as fundamental unit of nanoelectronic devices. The optical properties are computed under assumption of momentum conservation$\Delta \vec{k} = 0$. The on-the-fly non-adiabatic couplings for electronic degrees of freedom are obtained along the ab initio molecular dynamics nuclear trajectories, which are used as parameters for Redfield density matrix equation of motion. By investigating the photo-induced process on this nanowire, it is shown that high-energy photoexcitation relaxes to the band gap edge within 75 ps. The results of these calculations help to understand the mechanism of electron transfer process on the Si nanowire.

Charge Carrier Dynamics in Nanostructured Tungsten Trioxide for Solar Driven Water Oxidation

2018 ◽  
Author(s):  
Sacha Corby ◽  
Laia Francas ◽  
Shababa Selim ◽  
Michael Sachs ◽  
Andreas Kafizas ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Water Oxidation ◽  
Tungsten Trioxide ◽  
Carrier Dynamics ◽  
Charge Carrier Dynamics
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