Let There Be Current
Turning Light into Current in Molecular Arrays with Plasmons
Investigators in the Nano/Bio Interface Center at the University of Pennsylvania have demonstrated a new mechanism for turning light into electrical current in porphyrin molecules. They fabricated an array of gold metal nanoparticles and linked them with special light-sensitive porphyrins
The plasmons at the surface of the nanoparticles focus the light to the junction where the molecules are connected. The plasmon effect increases the efficiency of current production in the molecule by a factor of 4-20 (400% to 2000%) that is then transported through the network to the outside world.
Surface plasmons are being engineered into a variety of light activated devices such as biosensors and optical circuits. This is the first time that plasmons have induced current in molecules. The action is similar to that of solar cells and may provide an approach for higher efficiency energy harvesting devices.
This research represents a collaborative effort with researchers at Duke University and the University of Maryland. Results were published in ACS Nano on January 26, 2010.
The Institute of Nanotechnology puts significant effort into ensuring that the information provided on its news pages is accurate and up-to-date. However, we cannot guarantee absolute accuracy. Consequently, the Institute of Nanotechnology disclaims any and all responsibility for inaccuracy, omission or any kind of deficiency in relation to the news items and articles hosted herein.
- 15 April 2014Targeting cancer with a triple threat
- 01 April 2014 Nano-paper filter can remove viruses
- 19 March 2014EU NanoSafety Cluster - Key Global NanoSafety Database Survey
- 04 March 2014NanoCelluComp presents final results at JEC Europe 2014
- 17 February 2014Researchers Hijack Cancer Migration Mechanism to “Move” Brain Tumours
- View All