In this paper, we present Raman scattering and luminescence of poly-paraphenylene vinylene/single-walled carbon nanotubes composites, focused on data recorded in the anti-Stokes branch. We demonstrate that, when the excitation energy is in the long wavelength tail of the fundamental absorption edge, an anti-Stokes signal is generated, whose origin is a photon absorption accompanied by a phonon process from lower to upper vibronic states. The efficiency of this anti-Stokes photo-luminescence is increased when composites films are deposited onto an Au rough surface acting as a surface enhanced Raman scattering substrate. This mechanism is explained by a coherent anti-Stokes Raman scattering-like process, as observed in other nano-structured materials.

1.
J. H.
Burroughes
,
D. D. C.
Bradley
,
A. R.
Brown
,
R. N.
Marks
,
K.
Mackay
,
R. H.
Friend
,
P. L.
Burns
, and
A. B.
Holmes
,
Nature
347
,
539
(
1990
).
2.
R. H.
Friend
,
D. D. C.
Bradley
, and
P. D.
Towsend
,
J. Phys. D: Appl. Phys.
20
,
1367
(
1987
).
3.
E.
Mulazzi
,
A.
Ripamonti
,
J.
Wery
,
B.
Dulieu
, and
S.
Lefrant
,
Phys. Rev. B
60
,
16519
, (
1999
).
4.
J.
Wery
,
H.
Aarab
,
S.
Lefrant
,
E.
Faulques
,
E.
Mulazzi
, and
R.
Perego
,
Phys. Rev. B
67
,
115202
(
2003
).
5.
H.
Ago
,
M. L. P.
Shaffer
,
D. S.
Ginger
,
A. H.
Windle
, and
R. H.
Friend
,
Phys. Rev. B
61
,
2286
(
2000
).
6.
J.
Yu
,
J. H.
Hsu
,
K. R.
Chuang
,
C. L.
Chao
,
S. A.
Chen
,
F. J.
Kao
,
W. S.
Fann
, and
S. H.
Lin
,
Synth. Met.
74
,
7
(
1995
).
7.
S. H.
Lim
,
T. G.
Bjorklund
, and
C. J.
Barden
,
Chem. Phys. Lett.
342
,
555
562
(
2001
).
8.
E.
Mulazzi
,
R.
Perego
,
H.
Aarab
,
L.
Mihut
,
E.
Faulques
,
S.
Lefrant
, and
J.
Wery
,
Synth. Met.
154
,
221
(
2005
).
9.
E.
Mulazzi
,
R.
Perego
,
J.
Wery
,
L.
Mihut
,
S.
Lefrant
, and
E.
Faulques
,
J. Chem. Phys.
125
,
014703
(
2006
).
10.
I.
Orion
,
J. P.
Buisson
, and
S.
Lefrant
,
Phys. Rev. B
57
,
7050
(
1998
).
11.
N. O.
Dantas
,
F.
Qu
,
R. S.
Silva
, and
P. C.
Morais
,
J. Phys. Chem. B
106
,
7453
(
2002
).
12.
A.
Moadhen
,
H.
Elhouichet
,
L.
Nosova
,
M. Oueslati1 Phys. Status Solidi C
4
,
2170
(
2007
).
13.
Y. R.
Shen
, in
The Principle of Nonlinear Optics
(
John Wiley & Sons
,
2002
), p.
242
.
14.
H.
Raether
, in
Surface Plasmons on Smooth and Rough Surfaces and Gratings
,
Springer Tracts in Modern Physics
(
Springer
,
Berlin
,
1988
), p.
58
70
.
15.
J. L.
Coutaz
,
M.
Neviere
,
E.
Pic
, and
R.
Reinisch
,
Phys. Rev. B
32
,
2227
(
1985
).
16.
I.
Baltog
,
N.
Primeau
,
R.
Reinisch
, and
J. L.
Coutaz
,
J. Opt. Soc. Am. B
13
,
656
(
1996
).
17.
R.
Antoine
,
P. F.
Brevet
,
H. H.
Girault
,
D.
Bethell
, and
D.
Schiffrin
,
Chem. Commun.
19
,
1901
(
1997
).
18.
A.
Bouhelier
,
M.
Beversluis
,
A.
Hartschuh
, and
L.
Novotny
,
Phys. Rev. Lett.
90
,
013903
(
2003
).
19.
M.
Lippitz
,
M. A.
v Dijk
, and
M.
Orrit
,
Nano Lett.
5
,
799
(
2005
).
20.
I.
Baltog
,
M.
Baibarac
, and
S.
Lefrant
,
Phys. Rev. B
72
,
245402
(
2005
).
21.
M.
Baibarac
,
I.
Baltog
, and
S.
Lefrant
,
Carbon
47
,
1389
(
2009
).
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