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Plasmon-Phonon Coupling in Li Intercalated InSe

Published online by Cambridge University Press:  21 February 2011

P.A. Burret ,
C. Julien ,
M. Jouanne  and
M. Balkanski
P.A. Burret
Affiliation:
Laboratoire de Physique des Solides, associé au CNRS, UA154 Université P. et M. Curie, 4 Place Jussieu, 75252 Paris, France
C. Julien
Affiliation:
Laboratoire de Physique des Solides, associé au CNRS, UA154 Université P. et M. Curie, 4 Place Jussieu, 75252 Paris, France
M. Jouanne
Affiliation:
Laboratoire de Physique des Solides, associé au CNRS, UA154 Université P. et M. Curie, 4 Place Jussieu, 75252 Paris, France
M. Balkanski
Affiliation:
Laboratoire de Physique des Solides, associé au CNRS, UA154 Université P. et M. Curie, 4 Place Jussieu, 75252 Paris, France
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Abstract

The layered semiconductor InSe which is a potential insertion cathode for thin film batteries can be intercalated with lithium which act as donor in the host. Chemical intercalation in n-butyllithium, leads to a drastic increase of the free carrier density in the host material, InSe single crystal.

The variation of the free carrier density with intercalation shifts the plasma frequency into the region of the LO-mode vibrations and allows the observation of the plasmon-LO-phonons coupling by light scattering experiments. By varying the sample temperature, it is possible to follow the two branches of the curve ω(q) corresponding to the modes L+ and L-.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 135: Symposium M – Solid State Ionics I , 1988 , 473
Copyright
Copyright © Materials Research Society 1989

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