Silver and gold nanowires open the way to better electrochromic devices

February 22, 2021

The team of Professor
Solid and flexible electrochromic (EC) devices, such as smart windows, wearable electronics, foldable displays, and smartphones, are of great interest in research. This importance is due to their unique property: the colour or opacity of the material changes when a voltage is applied.

Traditionally, electrochromic devices use indium tin oxide (ITO) electrodes. However, the inflexibility of metal oxide and the leakage issue of liquid electrolyte affect the performance and lifetime of EC devices. ITO is also brittle, which is incompatible with flexible substrates.

Furthermore, there are concerns about the scarcity and cost of indium, a rare element, which raises a question on its long-term sustainability. The fabrication process for the highest quality ITO electrodes is expensive. "With all these limitations, the need for ITO-free optoelectronic devices are considerably high. We were able to achieve such a goal," says Dongling Ma who led the
Advanced Functional Materials.

A new approach

Indeed, the team has developed a new approach with a cost-effective and easy electrode fabrication that is completely ITO-free. "We reached high stability and flexibility of transparent conductive electrodes (TEC), even in a harsh environment, such as oxidizing solution of H2O2" she adds. They are the first to apply stable nanowires-based TCEs in flexible EC devices, using silver nanowires coated with a compact

Now that they have a proof of concept, the researchers want to scale up the synthesis of TEC and make the nanowires fabrication process even more cost-effective, while maintaining high device performance.
About the study

The article "Highly Stable Ag-Au Core-Shell Nanowire Network for ITO?Free Flexible Organic Electrochromic Device", by Shengyun Huang, Yannan Liu, Maziar Jafari, Mohamed Siaj, Haining Wang, Shuyong Xiao and Dongling Ma, was published in the journal Advanced Functional Materials. The study received financial support from the Natural Sciences and Engineering Research Council of Canada (NSERC), the Fonds de recherche du Québec- Nature et technologies (FRQNT) and the Quebec Centre for Advanced Materials.

About INRS

INRS is a university dedicated exclusively to graduate level research and training. Since its creation in 1969, INRS has played an active role in Quebec's economic, social, and cultural development and is ranked first for research intensity in Quebec and in Canada. INRS is made up of four interdisciplinary research and training centres in Quebec City, Montreal, Laval, and Varennes, with expertise in strategic sectors: Eau Terre Environnement, Énergie Matériaux Télécommunications, Urbanisation Culture Société, and Armand-Frappier Santé Biotechnologie. The INRS community includes more than 1,500 students, postdoctoral fellows, faculty members, and staff.

Source :
Audrey-Maude Vézina
Service des communications de l'INRS
418 254-2156

Institut national de la recherche scientifique - INRS

Related Team Articles from Brightsurf:

Disagreements help team perception, study finds
Team disagreements might be the key to helping Soldiers identify objects in battle, researchers say.

Team builds the first living robots
Scientists repurposed living frog cells -- and assembled them into entirely new life-forms.

There is no 'I' in team -- or is there?
There is no 'I' in 'team -- as the saying goes.

Team finds bovine kobuvirus in US
A virus that afflicts cattle that was first discovered in Japan in 2003 has made its way to the US, researchers report in the journal Emerging Infectious Diseases.

Chinese team makes nanoscopy breakthrough
A Chinese research team has developed an advanced imaging technique to achieve super-resolution microscopy at unprecedented speeds and with many fewer images.

Heterogeneity in the workplace: 'Diversity is very important to us -- but not in my team'
Diversity in the workplace is highly sought in theory, but often still lacking in practice.

How team sports change a child's brain
Adult depression has long been associated with shrinkage of the hippocampus, a brain region that plays an important role in memory and response to stress.

Two compounds in coffee may team up to fight Parkinson's
Rutgers scientists have found a compound in coffee that may team up with caffeine to fight Parkinson's disease and Lewy body dementia -- two progressive and currently incurable diseases associated with brain degeneration.

The science of team sports
Joint successes in the past increase the chances of winning.

In team sports, chemistry matters
Northwestern Engineering's Noshir Contractor and researchers analyzed game statistics across major sports and online games, revealing that past shared success among teammates improves their team's odds of winning future games.

Read More: Team News and Team Current Events is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to