Purdue researchers have created a transparent polymer film that also conducts electricity, introducing an inexpensive organic material for applications such as the screens of electronic devices.
While some polymers can already conduct electricity with the help of a process called chemical doping, none have yet been made that conduct just as well in a transparent form. This combination could find use in TV, phone and computer screens that currently use a relatively expensive inorganic material, indium tin oxide, to serve as a transparent conductor. The researchers detail their discovery in a paper published on March 23 in Science.
“The precursors of this new polymer are made on the ton scale,” said Bryan Boudouris, the Robert and Sally Weist Associate Professor of Chemical Engineering. “Having a conducting transparent material from carbon-based materials would be significant.”
The polymer film, which has the look and feel of glass, can be more cheaply produced on a large scale than indium tin oxide because it originates from earth-abundant materials. Its cost effectiveness also has advantages over polymers already used for electronics that rely on expensive chemistry and chemical doping to achieve high conductivity. Existing conducting polymers also typically absorb light due to their conjugated, or delocalized, electron network structure.
“It’s tough to engineer something that is conjugated to be transparent,” said Brett Savoie, an assistant professor of Chemical Engineering. “So, we started with a completely new non-conjugated polymer and modified it to conduct.”
Modifications involved adding radical groups that are already transparent but typically wouldn’t conduct electricity within a polymer. “Our idea was, could we use polymers easier to make on a large scale but also get them to be electronically active?” Boudouris said.
Savoie simulated how the radical groups electronically communicate with each other across the polymeric material, a property known as electrical percolation, to figure out how to make the polymer a good conductor. The simulations showed that it was critical to incorporate more radicals than previous studies had been able to achieve, and also make the polymer soft enough that the radical groups could associate within the material. Boudouris accomplished this by synthesizing a material that had both a high density of radical sites and could flow at low temperatures, resulting in a transparent film processed near room temperature.
This polymer is not only transparent, but could conduct electricity competitively with commercially available conjugated polymers. “The simulations gave us the design principles that will allow us to make even better conductors in the future,” Boudouris said.
The new polymer also provides insights for future research to be conducted by Boudouris, Savoie and other faculty at the Purdue-based Materials Innovation for Bioelectronics from Intrinsically-stretchable Organics (Mi-Bio) center, which aims to produce tailor-made polymers for biomedical applications.
“Conducting polymers are different from other conductors in that they can reversibly exchange ions and analytes with liquid media—kind of like a sponge—and this creates all kinds of interesting sensing and device applications.” Savoie said.
The Latest on: Transparent electronics
via Google News
The Latest on: Transparent electronics
- Buy Now, Pay Later Gains Steam as Sezzle Partners With GameStopon December 1, 2020 at 6:54 am
Sezzle Inc., Buy Now, Pay Later solutions provider, has announced a partnership with GameStop to provide the world's largest retailer of video games access to its flexible and innovative digital ...
- Transparent Digital Signage Market Competitive Status, Industry Summary, Restraints and Threat, Forecast Till 2029 | BenQ and LG Electronicson November 24, 2020 at 9:43 pm
MarketResearch.Biz:Transparent Digital Signage Market Overview: The report provides each quantitative and qualitative information on the global Transparent Digital Signage market for the period of ...
- HoverCam to Present World’s First Fully Integrated Transparent Writing Glass for Remote and Hybrid Learning at ISTE20 Liveon November 24, 2020 at 12:14 pm
Glass and Presenter Lighting, and Software to Present and Record Engaging Lessons SAN DIEGO — Nov. — HoverCam, an innovative technology leader in the education market, today announced it has partnered ...
- SolarWindow Shares Heat Up 34% as Firm Develops High-Speed Production of Electricity-Generating Flexible Glasson November 23, 2020 at 11:34 am
Shares of SolarWindow Technologies reached a new 52-week high after the company reported it has created the "first-ever" electricity-generating flexible glass using a high-speed manufacturing process.
- Panasonic is finally selling transparent OLED TVs – here’s why you won’t get oneon November 21, 2020 at 8:03 am
Electronics manufacturer Panasonic has finally started selling commercial units of its transparent OLED TVs, and it could be the start of a transparent display revolution – though probably not for the ...
- Transparent Sound Designs Portable Speaker That Doubles as a Mini-Lampon November 18, 2020 at 5:08 am
Transparent Sound, a Stockholm-based electronics brand known for its stylish see-through speakers, has just unveiled a portable speaker that doubles as a mini-lamp. Dubbed “Light Speaker,” the device ...
- Transparent’s latest speaker will light up your dayon November 18, 2020 at 4:01 am
Stockholm-based modular electronics brand Transparent has unveiled its latest speaker - and it's rather unique looking one. The Light Speaker is the | Trusted Reviews ...
- iMasterRepair.com Offers Mail-In Repair Solutions for Consumer Electronicson November 17, 2020 at 10:30 pm
This company provides device repairs to help everyone have fully functional devices for work, school or entertainment without the need to leave the house. The current ...
- Xiaomi has just launched a transparent OLED TV. Yes, you read that right!on November 17, 2020 at 4:04 pm
I promise thee!) The Chinese consumer electronics giant’s transparent TV packs a 55-inch OLED display with 150000:1 static contrast ratio and an infinite dynamic contrast ratio. Notably ...
via Bing News