Skip to Main content Skip to Navigation
Theses

Etude de l’effet plasmonique des nanoparticules métalliques aléatoires sur les performances des diodes électroluminescences organiques.

Abstract : This thesis focuses on the utilization of localized surface plasmon resonances (LSPR) of metallic nanoparticles (NPs) to improve the performance of Organic Light Emitting Diodes (OLEDs). In particular, we focused on randomly dispersed NPs by thermal evaporation during the OLED fabrication process. In the first part of the experimental work, we focused on the fabrication and study of random NPs of silver. The effects of their position with respect to the emissive layer (EML) were studied. The results show improvements in electrical and optical performance of OLEDs incorporating these NPs for EML-NPs distances greater than 15 nm. Subsequently, we were interested in the study of the plasmonic field range action by developing an original method based on the use of a DCM red-emitting layer embedded in Alq3 green EML. By varying the position of this thin layer of DCM, it was possible to probe at the nanoscale the extent of the effects of Au NPs in particular on the variation of the luminous efficiency of the OLED. Finally, we studied the influence of Al plasmonic nanoparticles (NPs) on the performance of a blue OLED subjected to the emission of exciplexes. The results show that in the case of OLED with Al-NPs, the emission of exciplexes is reduced thanks to the LSPR effect and the luminous efficiency of the plasmonic device indicates a 53% improvement over that of the OLED without NPs.
Complete list of metadatas

https://tel.archives-ouvertes.fr/tel-02613292
Contributor : Abes Star :  Contact
Submitted on : Wednesday, May 20, 2020 - 7:23:10 AM
Last modification on : Tuesday, May 26, 2020 - 8:41:26 AM

File

edgalilee_th_2018_diallo.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-02613292, version 1

Collections

Citation

Amadou Thierno Diallo. Etude de l’effet plasmonique des nanoparticules métalliques aléatoires sur les performances des diodes électroluminescences organiques.. Physique des plasmas [physics.plasm-ph]. Université Sorbonne Paris Cité, 2018. Français. ⟨NNT : 2018USPCD079⟩. ⟨tel-02613292⟩

Share

Metrics

Record views

69

Files downloads

44