English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Hot carrier relaxation in CdTe via phonon-plasmon modes

MPS-Authors
/persons/resource/persons96086

Zhong,  Y.
Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society;

/persons/resource/persons95189

Schlichting,  I.
Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society;

/persons/resource/persons93883

Krasniqi,  F.
Department of Biomolecular Mechanisms, Max Planck Institute for Medical Research, Max Planck Society;

Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Zhong, Y., Ostach, D., Scholz, M., Epp, S. W., Techert, S., Schlichting, I., et al. (2017). Hot carrier relaxation in CdTe via phonon-plasmon modes. Journal of Physics: Condensed Matter, 29(9): 095701, pp. 1-12. doi:10.1088/1361-648X/aa5478.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002C-4AD7-0
Abstract
Carrier and lattice dynamics of laser excited CdTe was studied by time-resolved reflectivity for excitation fluences spanning about three orders of magnitude from 0.064 to 6.14 mJ/cm2. At fluences below 1 mJ/cm2 the transient reflectivity is dominated by the dynamics of hybrid phonon-plasmon modes. At fluences above 1 mJ/cm2 the time-dependent reflectivity curves show a complex interplay between band-gap renormalization, band filling, carrier dynamics and recombination. A framework that accounts for such complex dynamics is presented and used to model the time-dependent reflectivity data. This model suggests that the excess energy of the laser-excited hot carriers is reduced much more efficiently by emitting hybrid phonon-plasmon modes rather than bare longitudinal optical phonons.