scholarly journals Ultrafast relaxation of hot phonons in graphene-hBN heterostructures

APL Materials ◽  
2017 ◽  
Vol 5 (5) ◽  
pp. 056101 ◽  
Author(s):  
Dheeraj Golla ◽  
Alexandra Brasington ◽  
Brian J. LeRoy ◽  
Arvinder Sandhu
Keyword(s):  
Hot Phonons ◽  
Ultrafast Relaxation

Double-Excitation Dynamics in m-LPPP probed with sub-20 fs Time Resolution

2003 ◽  
Vol 771 ◽  
Author(s):  
C. Gadermaier ◽  
G. Cerullo ◽  
C. Manzoni ◽  
U. Scherf ◽  
E.J.W. List ◽  
...  
Keyword(s):  
Vibrational Relaxation ◽  
Broad Band ◽  
Generation Efficiency ◽  
Exciton Dissociation ◽  
Charge Generation ◽  
Carrier Generation ◽  
Dissociation Probability ◽  
Ultrafast Relaxation ◽  
First Excited State ◽  
Differential Transmission

AbstractIn a novel modification of transient differential transmission spectroscopy, the first excited state S1 is reexcited via a second laser pulse towards a higher lying state Sn. The dynamics of the relaxation of this state Sn as well as the states created from Sn are revealed by a broad-band probe pulse.We find that the charge carrier generation efficiency from Sn is higher compared to S1. The push and probe durations below 20 fs enable the temporal resolution of the ultrafast relaxation of the Sn state and enables us to identify the two main contributions to enhanced charge generation from Sn, energy migration towards sites of high dissociation probability, and exciton dissociation during vibrational relaxation.

The effect of hydrogen bonds on the ultrafast relaxation dynamics of a BODIPY dimer

2021 ◽  
Vol 154 (8) ◽  
pp. 084201
Author(s):  
Elisa Fresch ◽  
Nicola Peruffo ◽  
Mariachiara Trapani ◽  
Massimiliano Cordaro ◽  
Giovanni Bella ◽  
...  
Keyword(s):  
Hydrogen Bonds ◽  
Relaxation Dynamics ◽  
Ultrafast Relaxation

Ultrafast relaxation of the fundamental vibrations of SH- and OH- in potassium halides

1994 ◽  
Vol 58 (1-6) ◽  
pp. 33-36 ◽  
Author(s):  
C.E. Mungan ◽  
U. Happek ◽  
A.J. Sievers
Keyword(s):  
Ultrafast Relaxation ◽  
Potassium Halides

Ultrafast relaxation dynamics of amine-substituted bipyridyl ruthenium(ii) complexes

2017 ◽  
Vol 683 ◽  
pp. 322-328 ◽  
Author(s):  
Hongwei Song ◽  
Xian Wang ◽  
WenWen Yang ◽  
Guiying He ◽  
Zhuoran Kuang ◽  
...  
Keyword(s):  
Relaxation Dynamics ◽  
Ultrafast Relaxation
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