nanotechnology-smart-materials-2018-keynote

9 / 16

E u r o S c i C o n C o n f e r e n c e o n
Nanotechnology &
Smart Materials
Nano Research & Applications
ISSN 2471-9838
O c t o b e r 0 4 - 0 6 , 2 0 1 8
Am s t e r d a m , N e t h e r l a n d s
Nanotechnology & Smart Materials 2018
Page 45
The past few years have seen a considerable amount of research devoted to
nanostructured transparent conductive materials which play a pivotal role in
many modern devices such as: solar cells, flexible light-emitting devices, touch
screens, electromagneticdevicesor flexible transparent thinfilmheaters.Currently,
the most commonly used material for such applications (ITO: Tin-doped Indium
oxide) suffers from two major drawbacks: indium scarcity and brittleness. Among
emerging transparent electrodes, silver nanowire (AgNW) networks appear as a
promising substitute to ITO, since these percolating networks exhibit excellent
properties with sheet resistance of a few Ω/sq and optical transparency of 90%,
fulfilling the requirements for many applications. It also shows very good electro-
mechanical properties. Their main properties, the influence of post treatments or
the network density and nanowire size but as well their stability will be discussed,
thanks to both experimental and numerical approaches. Some applications will be
developed such as their use as transparent heaters or in solar cells. As well, other
indium-free transparent conductive oxide (TCO) layers have being investigated and
some exhibit interesting properties. We will present the main scientific challenges
associated to their physical properties. For instance the electron mobility in
highly doped Al-ZnO or F-SnO2 will be discussed as well the capability to control
the haziness of such transparent electrodes. We will show as well that recently
some developments of easily up-scalable and vacuum-free deposition techniques
such as atmospheric pressure spatial atomic layer deposition (AP-SALD) appear
promising for developing high-quality materials with a high throughput at low
temperature (≤200°C), thus being compatible with polymeric substrates and roll-
to-roll processing. This contribution aims at presenting briefly the main properties
of transparent electrodes as well as the challenges which still remain in terms of
efficient integration in devices.
Biography
Daniel Bellet has became an Assistant Professor at Grenoble
University in 1990 and is Professor at Grenoble Institute
of Technology (Grenoble INP) since 1998. He was Junior
Member at IUF (Institution for promoting excellence in
French Universities) from 1999 to 2004, and was Director of
the academic research community ‘Energies’ at the Région
Auvergne-Rhone-Alpes between 2011 and 2017. His research
is focused on material physics and more specifically now on
transparent conductivematerials and he is a Co-Author of more
than 140 peer-reviewed publications or proceedings, 8 book
chapters and has an h-index of 33.
Nanomaterials for transparent electrodes:
properties, challenges and prospects
D Bellet1, T Sannicolo1 , D T Papanastasiou1 ,
V H Nguyen1,2, J Resende 1 ,
S Aghazadehchors1,3, C Jimenez1 ,
D Munoz-Rojas1 and D N Nguyen3
1Universite Grenoble Alpes, CNRS, Grenoble INP-LMGP, France
2CEA-INES, Liten, France
3Universite de Liege, CESAM/Q-MAT, SPIN, Belgium
D Bellet et al., Nano Res Appl Volume:4
DOI: 10.21767/2471-9838-C6-023