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Chemists Advance Clear Conductive Films

By Guest PostAugust 8, 2012Sciencebisacetylacetonatedichloride, brown university, chemist, conductive films, conductivity, conductivity performance, cross section, david paine, electron microscopy, guanglai li, indium acetylacetonate, indium tin oxide, ito, ito crystals, jonghun lee, melissa petruska, nanocrystal solution, polyimide, shouheng sun, solar cells, spinning, sunghwan lee

Thin, conductive films are useful in displays and solar cells. A new solution-based chemistry developed at Brown University for making indium tin oxide films could allow engineers to employ a much simpler and cheaper manufacturing process.

PROVIDENCE, R.I. [Brown University] — In a touch-screen display or a solar panel, any conductive overlay had better be clear. Engineers employ transparent thin films of indium tin oxide (ITO) for the job, but a high-tech material’s properties are only half its resume. They must also be as cheap and easy to manufacture as possible. In a new study, researchers from Brown University and ATMI Inc. report the best-ever transparency and conductivity performance for an ITO made using a chemical solution, which is potentially the facile, low-cost method manufacturers want.

“Our technology is already at the performance level for application in resistive touch screens,” said Jonghun Lee, a Brown chemistry graduate student and lead author of the paper posted online Aug. 1 by the Journal of the American Chemical Society. (more…)

New Graphene-Based Material Could Revolutionise Electronics Industry

By Guest PostApril 27, 2012Scienceconductive material, electricity, electronic device, ferric chloride, graphene, graphexeter, indium tin oxide, ito, molecule, monica craciun, saverio russo, Technology, university of exeter

The most transparent, lightweight and flexible material ever for conducting electricity has been invented by a team from the University of Exeter.

Called GraphExeter, the material could revolutionise the creation of wearable electronic devices, such as clothing containing computers, phones and MP3 players.

GraphExeter could also be used for the creation of ‘smart’ mirrors or windows, with computerised interactive features. Since this material is also transparent over a wide light spectrum, it could enhance by more than 30% the efficiency of solar panels.

Adapted from graphene, GraphExeter is much more flexible than indium tin oxide (ITO), the main conductive material currently used in electronics. ITO is becoming increasingly expensive and is a finite resource, expected to run out in 2017. (more…)

UCLA Team Develops Highly Efficient Method for Creating Flexible, Transparent Electrodes

By Guest PostNovember 22, 2011Scienceagnw, electronics, highly transparent conductors, indium, indium tin oxide, ito, liquid crystal, mechanical properties, metal oxide nanoparticles, nanomaterials, organic polymers, paul weiss, rui zhu, sensitive organic materials, silver nanowire networks, silver nanowires, transparent electrodes, yang yang

As the market for liquid crystal displays and other electronics continues to drive up the price of indium — the material used to make the indium tin oxide (ITO) transparent electrodes in these devices — scientists have been searching for a less costly and more dynamic alternative, particularly for use in future flexible electronics.

Besides its high price, ITO has several drawbacks. It’s brittle, making it impractical for use in flexible displays and solar cells, and there is a lack of availability of indium, which is found primarily in Asia. Further, the production of ITO films is relatively inefficient. (more…)

Tag Archives: indium tin oxide

Chemists Advance Clear Conductive Films

New Graphene-Based Material Could Revolutionise Electronics Industry

UCLA Team Develops Highly Efficient Method for Creating Flexible, Transparent Electrodes