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Photoexcitations in composites of poly(paraphenylene vinylene) and single-walled carbon nanotubes -: art. no. 115202

被引：44
作者：
Wéry, J
Aarab, H
Lefrant, S
Faulques, E
Mulazzi, E
Perego, R
机构：
[1] Inst Mat Jean Rouxel, Lab Phys Cristalline, F-44322 Nantes, France
[2] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy
[3] Ist Nazl Fis Mat, I-20133 Milan, Italy
[4] Fac Sci Dher Elmahraz, Lab Phys Solide, Fes, Morocco
来源：
PHYSICAL REVIEW B | 2003年 / 67卷 / 11期
关键词：
D O I：
10.1103/PhysRevB.67.115202
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Absorption and photoluminescence (PL) studies have been carried out on pristine standard poly(paraphenylene vinylene) PPV and a series of PPV-single-walled carbon nanotubes (SWNT) composite films. Drastic changes in the PL and absorption spectra are observed with the increase of the SWNT fraction. A model is presented which is able to explain quantitatively the modification of absorption spectra, and particularly the new features in PL spectra as a function of SWNT percentages in the films. We provide evidence for strong electronic interaction between SWNT and the PPV polymer precursor precluding the complete thermal conversion of the polymer matrix.
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页数：6
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