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Article Dans Une Revue Optical Materials Année : 2010

Electrical and optical properties of thin films of DNA:PEDOT

Vaidotas Kažukauskas
  • Fonction : Auteur
Mindaugas Pranaitis
  • Fonction : Auteur
Andrius Arlauskas
  • Fonction : Auteur
Oksana Krupka
  • Fonction : Auteur
François Kajzar
  • Fonction : Auteur
Zacaria Essaidi
  • Fonction : Auteur
Bouchta Sahraoui


We report investigations of functionalized DNA:PEDT–PSS films. The electrical conductivity of the sample material at the room temperature was about (1–5) × 10−10 Ω−1 cm−1. The IV curves of the samples were linear and symmetrical in the region from the room temperature down to the liquid nitrogen temperature. The thermal activation energy of the conductivity near the room temperature was about 0.033 eV independently on the applied bias. The weak carrier trapping was identified by the Thermally Stimulated Current method, proving the fast recombination of light-generated carriers. Notably, by constant light excitation a “bistable” photoconduction below the room temperature was evidenced, i.e., upon excitation by a white light a remarkable increase of the photocurrent could be observed below 145–155 K by cooling the samples. Meanwhile by heating the photosensitivity remained increased up to 235–245 K. Such phenomenon could presumably be attributed to the light-induced changes of the sample material morphology and/or associated variation of carrier transport conditions.


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Dates et versions

hal-03343375 , version 1 (14-09-2021)



Vaidotas Kažukauskas, Mindaugas Pranaitis, Andrius Arlauskas, Oksana Krupka, François Kajzar, et al.. Electrical and optical properties of thin films of DNA:PEDOT. Optical Materials, 2010, 32 (12), pp.1629 - 1632. ⟨10.1016/j.optmat.2010.05.014⟩. ⟨hal-03343375⟩
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