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Thesis defence by Sara AGHAZADEHCHORS

Published on February 4, 2021
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PhD Defense March 29, 2021
9 a.m. - Salle des Conseils Z-704, 7th floor, Building Z (Grenoble INP Phelma building)
Grenoble INP - Phelma
3 parvis Louis Néel - 38000 Grenoble
Accès : TRAM B arrêt Cité internationale
Free entrance - No registration

Metallic nanowire networks: silver nanowire network stability enhancement using metal oxide coatings, Percolation onset of nano-object network

Sara

Sara


Keywords:

Silver nanowires, stability, metal oxide, percolation


cliquer pour voir la liste des membres du jury/clic here for the jury members

 


Abstract


This study is focused on the fabrication and optimization of Transparent Electrodes (TEs) based on silver Nanowires (AgNW) networks. High quality, mechanically flexible, and environmentally stable electrodes are fabricated using air-brush spray procedure. Addressing the lack of efficient thermal/ electrical stability, was the main focus of experimental studies in the scope of this thesis. We have chosen AP-SALD deposited thin coatings of metal oxides (a few tens of nanometers) to enhance the stability of AgNW based TEs. Samples of bilayer ZnO/ Al2O3 coatings showed excellent stability after 6 cycles of annealing from room temperature to 450 °C. The results presented in this work indicate a path to low-cost, highly stable, and transparent composite electrodes based on AgNWs and oxide coatings.


Also, we have used Monte Carlo simulations to investigate the percolation behavior of networks composed of random nano-objects with different orders of symmetry to find the elemental shapes with the lowest possible percolation threshold. Our findings can be used as a guideline for chemists to synthesize new shapes of nano-objects that offer outstanding electro-optical properties.

Membres du jury/ Jury members :
 

PROFESSEUR

Noël JAKSE

Laboratoire SIMAP, Université Grenoble Alpes

Président du Jury

PROFESSEUR

Mona Treguer-Delapierre

Université de Bordeaux, Laboratoire ICMCB

Rapporteur

Dr

Philippe Poulin

Laboratoire CRPP, Centre de Recherche Paul Pascal –CNRS; Université of Bordeaux,

Rapporteur

Dr

Matthias Pauly

Université de Strasbourg Institut Charles Sadron, CNRS,

Examinateur

Dr

Jean-Pierre Simonato

LITEN / DIR, 17 avenue des martyrs 38054 Grenoble FRANCE

Examinateur

Dr

Jean-Yves Raty

Université de Liège .Bât. B5A .SPIN

Examinateur

PROFESSEUR

daniel BELLET

Université Grenoble Alpes ,LMGP - 3 Parvis Louis Néel Minatec

Thesis Director

PROFESSEUR

Ngoc Duy Nguyen

Université de Liège .Bât. B5A .SPIN

Thesis Co-director


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Date of update February 11, 2021

Université Grenoble Alpes