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Article Dans Une Revue Solid State Communications Année : 2014

Effect of the defects on the optical and electronic properties of plasma polymerized organic thin films

C. Manaa
  • Fonction : Auteur
Martine Lejeune
H. Bouchriha
  • Fonction : Auteur
M. Benlahsen

Résumé

The microstructure and electronic properties of plasma-polymerized thin films grown by the plasma enhanced chemical vapor deposition (PECVD) method using the cyclohexane as precursor gas are investigated as a function of the radiofrequency power. Infrared, Raman and optical transmission measurements, correlated with electron paramagnetic resonance ones, are applied to characterize the Films in their as-deposited state. The results indicate that increasing the radiofrequency power induces a decrease of the total bonded hydrogen content, accompanied by an increase of the carbon C-sp(2) hybridization proportion. A decrease of the optical gap, with increasing radiofrequency power also occurs, and might suggest an increasing overlapping of the Gaussian pi-pi* bands around the Fermi level. Simultaneously, an increase of the spin density is observed in the same range of the radiofrequency power, suggesting that most of the spins originate from C-sp(2) complexes. (C) 2014 Elsevier Ltd. All rights reserved.
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Dates et versions

hal-01237454 , version 1 (03-12-2015)

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Citer

C. Manaa, Martine Lejeune, H. J. von Bardeleben, K. Zellama, H. Bouchriha, et al.. Effect of the defects on the optical and electronic properties of plasma polymerized organic thin films. Solid State Communications, 2014, 188, pp.36-39. ⟨10.1016/j.ssc.2013.12.022⟩. ⟨hal-01237454⟩
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