Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > News > Tapping into space for energy

August 3rd, 2007

Tapping into space for energy

Abstract:
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.

Source:
en.rian.ru

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Energy

Tiny bubbles provide tremendous propulsion in new microparticles research-Ben-Gurion U. June 21st, 2017

Enhanced photocatalytic activity by Cu2O nanoparticles integrated H2Ti3O7 nanotubes June 21st, 2017

Cambridge Nanotherm partners with Inabata for global sales and distribution June 20th, 2017

Development of low-dimensional nanomaterials could revolutionize future technologies June 15th, 2017

Aerospace/Space

National Space Society and Cornell University's Cislunar Explorers Celebrate The Team's First Place Victory in NASA's Cube Quest Challenge June 15th, 2017

Space energy technology restored to make power stations more efficient: Scientists use graphene to reinvent abandoned heat energy converter technology March 7th, 2017

Applied Graphene Materials plc - Significant commercial progress in AGMs three core sectors March 3rd, 2017

Triboelectric Nanogenerators Boost Mass Spectrometry Performance March 1st, 2017

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage

Rice U. chemists create 3-D printed graphene foam June 22nd, 2017

Smart materials used in ultrasound behave similar to water, Penn chemists report June 16th, 2017

X-ray Study Reveals Way to Control Molecular Vibrations that Transmit Heat: Findings open new pathway for "tuning" materials to ease or insulate against the flow of heat, sound, and other forms of energy June 7th, 2017

Graphene-nanotube hybrid boosts lithium metal batteries: Rice University prototypes store 3 times the energy of lithium-ion batteries May 19th, 2017

Solar/Photovoltaic

Tiny bubbles provide tremendous propulsion in new microparticles research-Ben-Gurion U. June 21st, 2017

Enhanced photocatalytic activity by Cu2O nanoparticles integrated H2Ti3O7 nanotubes June 21st, 2017

Development of low-dimensional nanomaterials could revolutionize future technologies June 15th, 2017

In a project funded by the Austrian Science Fund FWF, the physicist Serdar Sarıifti investigates possible uses in electronics of the semiconductor properties of indigo pigment June 14th, 2017

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project