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

Physicists devise method to reveal how light affects materials: The new method adds to the understanding of the fundamental laws governing the interaction of electrons and light June 15th, 2018

Tripling the Energy Storage of Lithium-Ion Batteries: Scientists have synthesized a new cathode material from iron fluoride that surpasses the capacity limits of traditional lithium-ion batteries June 14th, 2018

Remote control of transport through nanopores: New study outlines key factors affecting the transfer of molecules through biological channels May 24th, 2018

Team achieves two-electron chemical reactions using light energy, gold May 15th, 2018

Aerospace/Space

Disability Can Be a Superpower in Space Disabled astronauts offer unique solutions to emergencies in space May 17th, 2018

SpaceX Founding Employee Tom Mueller to Speak at International Space Development Conference May 15th, 2018

Shrimp, Soybeans, and Tomatoes Top the Menu in Cities in Space May 10th, 2018

National Space Society Applauds NASA's Support for Commercial Low Earth Orbit Space Stations May 2nd, 2018

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

Tripling the Energy Storage of Lithium-Ion Batteries: Scientists have synthesized a new cathode material from iron fluoride that surpasses the capacity limits of traditional lithium-ion batteries June 14th, 2018

Nickel ferrite promotes capacity and cycle stability of lithium-sulfur battery June 13th, 2018

Northwestern researchers predict materials to stabilize record-high capacity lithium-ion battery: Advancement could pave the way for less expensive, longer-lasting batteries for electric vehicles May 29th, 2018

Self-assembling 3D battery would charge in seconds May 22nd, 2018

Solar/Photovoltaic

Team achieves two-electron chemical reactions using light energy, gold May 15th, 2018

Hematene joins parade of new 2D materials: Rice University-led team extracts 3-atom-thick sheets from common iron oxide May 8th, 2018

Harvesting clean hydrogen fuel through artificial photosynthesis May 3rd, 2018

Research gives new ray of hope for solar fuel April 27th, 2018

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



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project