- About Us
- Career Center
- Nano-Social Network
- Nano Consulting
- My Account
August 3rd, 2007
The simplest way to convert solar radiation into electricity is by using the so-called extrinsic photo effect, whereby particles of light "knock out" electrons from a screen put up in their path. Soviet scientists from the Leningrad Physical and Technical Institute were the first to produce an electric current in that fashion in the 1930s. True, the efficiency of the first solar sulfur-helium elements was barely 1%. But starting in 1958, silicon solar batteries became the main source of electric power on spacecraft. By the mid-1970s, their efficiency approached 10%, where it remained for nearly two decades. It was only in the mid-1990s that it went up to 15%, and, by the turn of the new century, it had reached 20%.
This was achieved mainly by improving the technique for producing pure silicon - the basic material for making solar cells - from quartzites. The largest deposits of very pure quartzites are found in Russia, which had vast reserves of them. Recently the Joint Institute for Nuclear Research in Dubna, near Moscow, developed a photo cell with an efficiency of almost 50%. Scientists describe their product as a "star battery." It is an example of how nanotechnology can improve the workings of well-known processes.
|Related News Press|
Gigantic ultrafast spin currents: Scientists from TU Wien (Vienna) are proposing a new method for creating extremely strong spin currents. They are essential for spintronics, a technology that could replace today's electronics May 25th, 2016
Deep Space Industries and SFL selected to provide satellites for HawkEye 360’s Pathfinder mission: The privately-funded space-based global wireless signal monitoring system will be developed by Deep Space Industries and UTIAS Space Flight Laboratory May 26th, 2016
We’ll Leave the Lights On For You: Photonics advances allow us to be seen across the universe, with major implications for the search for extraterrestrial intelligence, says UC Santa Barbara physicist Philip Lubin - See more at: http://www.news.ucsb.edu/2016/016805/we-ll-leave-li May 17th, 2016
Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage
Abalonyx launches Reduced Graphene Oxide Product: Abalonyx has successfully scaled up production of thermally reduced graphene oxide (rGO) in its Tofte, Norway, production facility. This product is now offered to customers in Kg-quantities May 10th, 2016
Visualizing the Lithiation of a Nanosized Iron-Oxide Material in Real Time: Electron microscopy technique reveals the reaction pathways that emerge as lithium ions are added to magnetite nanoparticles May 9th, 2016