scholarly journals Resonance Raman Overtone Intensities and Electron–Phonon Coupling Strengths in Semiconductor Nanocrystals

2013 ◽  
Vol 117 (29) ◽  
pp. 6143-6149 ◽  
Author(s):  
Anne Myers Kelley
Keyword(s):  
Semiconductor Nanocrystals ◽  
Resonance Raman ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Coupling Strengths

Measurements of Electron-Phonon Coupling Strengths in Carbon Nanotubes

2006 ◽  
Author(s):  
Y. Yin ◽  
A. Vamivakas ◽  
A. Walsh ◽  
S. Cronin ◽  
M. S. Ünlü ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Phonon Coupling ◽  
Electron Phonon Coupling ◽  
Coupling Strengths

scholarly journals Monitoring hot exciton dissociation in hybrid lead halide perovskite films with sub-10 fs pulses

2019 ◽  
Vol 205 ◽  
pp. 06019
Author(s):  
Tufan Ghosh ◽  
Sigalit Aharon ◽  
Lioz Etgar ◽  
Sanford Ruhman
Keyword(s):  
Optical Band Gap ◽  
Phonon Coupling ◽  
Exciton Dissociation ◽  
Pump Probe ◽  
Spectral Modulation ◽  
Coherent Wave ◽  
Electron Phonon Coupling ◽  
Weak Regime ◽  
Coupling Strengths ◽  
Lead Halide

Sub-10 fs pump-probe experiments on methylammonium lead halide (MAPbI3) perovskite films show hot exciton dissociation in 20 fs after photo-excitation with ~0.7 eV excess energy compared to its optical band gap (BG). Coherent wave packets were also detected in the form of spectral modulation, revealing electron-phonon coupling in these materials. The estimated electron-phonon coupling strengths from the frequency and amplitude of the detected spectral modulation are in the weak regime, suggesting formation of large polaron.

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