Enhanced Resonant Raman Scattering and Electron−Phonon Coupling from Self-Assembled Secondary ZnO Nanoparticles

2005 ◽  
Vol 109 (39) ◽  
pp. 18385-18390 ◽  
Author(s):  
Hsin-Ming Cheng ◽  
Kuo-Feng Lin ◽  
Hsu ◽  
Chih-Jen Lin ◽  
Li-Jiaun Lin ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Zno Nanoparticles ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Resonant Raman ◽  
Resonant Raman Scattering ◽  
Self Assembled

Resonant Raman scattering and electron-phonon coupling in the organic superconductor (BEDT-TTF)2[Cu(NCS)2]

1997 ◽  
Vol 86 (1-3) ◽  
pp. 2067-2068 ◽  
Author(s):  
J.E. Eldridge ◽  
Y. Xie ◽  
Y. Lin ◽  
H.H. Wang ◽  
J.M. Williams ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Organic Superconductor ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Resonant Raman ◽  
Resonant Raman Scattering

Resonant Raman Scattering in CdSxSe1−x Nanocrystals: Electron-Phonon Coupling

1994 ◽  
Vol 358 ◽  
Author(s):  
M. Silvestri ◽  
L.W. Hwang ◽  
P. Persans ◽  
J. Schroeder
Keyword(s):  
Phase Transition ◽  
Raman Scattering ◽  
Coupling Strength ◽  
Phonon Coupling ◽  
Transition Pressure ◽  
Pressure Point ◽  
Phase Transition Pressure ◽  
Electron Phonon Coupling ◽  
Resonant Raman ◽  
Resonant Raman Scattering

ABSTRACTWe report pressure and laser tuned Raman scattering studies on CdSxSei1-x nanocrystals. The electron-phonon coupling strength was determined as a function of pressure beyond the bulk phase transition pressure point. The coupling strength at atmospheric pressure determined from the Stokes shifted photoluminescence and resonant Raman scattering is not drastically smaller than the bulk value as might be expected theoretically. As a function of pressure it also shows no abrupt changes at the bulk phase transition pressure point. These results indicate that deep traps play a critical part in the mechanism of the electron-phonon coupling.

scholarly journals Resonance and antiresonance in Raman scattering in GaSe and InSe crystals

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. Osiekowicz ◽  
D. Staszczuk ◽  
K. Olkowska-Pucko ◽  
Ł. Kipczak ◽  
M. Grzeszczyk ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Temperature Effect ◽  
Band Gap ◽  
Raman Spectra ◽  
Quantum Interference ◽  
Optical Band Gap ◽  
Phonon Coupling ◽  
Phonon Modes ◽  
Electron Phonon Coupling ◽  
Resonant Raman

AbstractThe temperature effect on the Raman scattering efficiency is investigated in $$\varepsilon$$ ε -GaSe and $$\gamma$$ γ -InSe crystals. We found that varying the temperature over a broad range from 5 to 350 K permits to achieve both the resonant conditions and the antiresonance behaviour in Raman scattering of the studied materials. The resonant conditions of Raman scattering are observed at about 270 K under the 1.96 eV excitation for GaSe due to the energy proximity of the optical band gap. In the case of InSe, the resonant Raman spectra are apparent at about 50 and 270 K under correspondingly the 2.41 eV and 2.54 eV excitations as a result of the energy proximity of the so-called B transition. Interestingly, the observed resonances for both materials are followed by an antiresonance behaviour noticeable at higher temperatures than the detected resonances. The significant variations of phonon-modes intensities can be explained in terms of electron-phonon coupling and quantum interference of contributions from different points of the Brillouin zone.

Resonant Raman scattering of discrete hole states in self-assembled Si/Ge quantum dots

2004 ◽  
Vol 21 (2-4) ◽  
pp. 312-316 ◽  
Author(s):  
D Bougeard ◽  
P.H Tan ◽  
M Sabathil ◽  
P Vogl ◽  
G Abstreiter ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Raman Scattering ◽  
Resonant Raman ◽  
Resonant Raman Scattering ◽  
Ge Quantum Dots ◽  
Self Assembled

Resonant Raman scattering in self-assembled quantum dots

1999 ◽  
Vol 60 (24) ◽  
pp. 16747-16757 ◽  
Author(s):  
E. Menéndez-Proupin ◽  
C. Trallero-Giner ◽  
S. E. Ulloa
Keyword(s):  
Quantum Dots ◽  
Raman Scattering ◽  
Resonant Raman ◽  
Resonant Raman Scattering ◽  
Self Assembled

Characterization of ZnO nanoparticles by resonant Raman scattering and cathodoluminescence spectroscopies

2008 ◽  
Vol 92 (11) ◽  
pp. 113115 ◽  
Author(s):  
M. Yoshikawa ◽  
K. Inoue ◽  
T. Nakagawa ◽  
H. Ishida ◽  
N. Hasuike ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Zno Nanoparticles ◽  
Resonant Raman ◽  
Resonant Raman Scattering

Intrinsic Exciton-Phonon Coupling and Tuning in ZnTe Nanowires Probed by Resonant Raman Scattering

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Yingyan Yi ◽  
Jason K. Marmon ◽  
Yuanping Chen ◽  
Fan Zhang ◽  
Tao Sheng ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Phonon Coupling ◽  
Resonant Raman ◽  
Resonant Raman Scattering
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