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Synthèse et propriétés de monocristaux, de poudres, films minces ou hétérostructures

Etudes à l'interface avec la matière biologique

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Nouvelle publication FM2N Mélanie Lagrange

Publié le 13 octobre 2015
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Communiqué 22 septembre 2015

Le papier "Optimization of silver nanowire-based transparent electrodes: effects of density, size and thermal annealing" a été publié dans Nanoscale

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Vous trouverez ici le papier de Mélanie Lagrange. Voici l'abstract:
"Silver nanowire (AgNW) networks are efficient as flexible transparent electrodes, and are cheaper to fabricate than ITO (Indium Tin Oxide). Hence they are a serious  competitor as an alternative to ITO in many applications such as solar cells, OLEDs, transparent heaters. Electrical and optical properties of AgNW networks deposited on glass are investigated in this study and an efficient method to optimize them is  proposed.
This paper relates network density, nanowire dimensions and thermal annealing directly to the physical properties of the nanowire networksusing original physical models. A fair agreement is found between experimental data and the proposed models. Moreover thermal stability of the nanowires is a key issue in thermal optimization of such networks and needs to be studied. In this work the impact of these four parameters on the networks physical properties are thoroughly investigated via in situ measurements
and modelling, such a method being also applicable to other metallic nanowire  networks. We demonstrate that this approach enables the optimization of both optical and electrical properties through modification of the junction resistance by thermal annealing, and a suitable choice of nanowire dimensions and network density. This work reports excellent optical and electrical properties of electrodes fabricated from AgNW networks with a transmittance T = 89.2% (at 550 nm) and a sheet resistance of
Rs = 2.9 Ω □−1, leading to the highest reported figure of merit."
DOI:  10.1039/C5NR04084A
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mise à jour le 16 octobre 2019

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