Nanotechnology Now

Our NanoNews Digest Sponsors



Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > News > New light on Earth’s energy crisis

November 24th, 2009

New light on Earth’s energy crisis

Abstract:
Another exciting breakthrough is an electronic device that uses spinach to convert light into electrical charge, developed by US researchers. Zhang Shuguang and research collaborators at the Massachusetts Institute of Technology have combined a protein complex extracted from spinach chloroplasts, with organic semiconductors, to make a solar cell that could be incorporated with solid state electronics. "Nature has been doing this for billions of years," Zhang says, "but this is the first time we've been able to harness it."

With nanotechnology and the minimalist idea of ‘less is more', thinner and lighter panels are making way to a more efficient design of a solar panel.

Zhang's team artificially stabilised the protein complex at the heart of their system, consisting of 14 protein subunits and hundreds of chlorophyll molecules, using synthetic peptides to bind small amounts of water to it, within a sealed unit.

Photons then ‘excite' coupled pairs of electrons within chlorophyll, causing an electron to transfer to a nearby receptor molecule. Plants use this transfer to complete photosynthesis. Zhang has fostered this principle into his device, feeding electrons into organic semiconductors aligned on top of a layer of glass.

Zhang encountered difficulties with the use of organic materials in system. The protein complex is kept stable for about three weeks by the peptides, and the cells convert only twelve per cent of light to electrical charge. The solution seems to point towards layering numerous cells atop each other, so that a certain amount of light can pass through.

Interestingly enough, in New Zealand other researchers are on a similar wavelength. Solar cell technology developed by Massey University's Nanomaterials Research Centre will enable New Zealanders to create electricity from sunlight 90 per cent cheaper than the current silicon-based, photo-electric solar cells.

Source:
universityobserver.ie

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

Instant-start computers possible with new breakthrough December 19th, 2014

Aculon Hires New Business Development Director December 19th, 2014

Iranian Scientists Use Nanotechnology to Increase Power, Energy of Supercapacitors December 18th, 2014

Iranian Researchers Produce Electrical Pieces Usable in Human Body December 18th, 2014

Chemistry

How does enzymatic pretreatment affect the nanostructure and reaction space of lignocellulosic biomass? December 18th, 2014

The gold standard December 9th, 2014

Possible Futures

A novel method for identifying the body’s ‘noisiest’ networks November 19th, 2014

Researchers discern the shapes of high-order Brownian motions November 17th, 2014

VDMA Electronics Production Equipment: Growth track for 2014 and 2015 confirmed: Business climate survey shows robust industry sector November 14th, 2014

Open Materials Development Will Be Key for HP's Success in 3D Printing: HP can make a big splash in 3D printing, but it needs to shore up technology claims and avoid the temptation of the razor/razor blade business model in order to flourish November 11th, 2014

Announcements

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

Instant-start computers possible with new breakthrough December 19th, 2014

Aculon Hires New Business Development Director December 19th, 2014

Iranian Scientists Use Nanotechnology to Increase Power, Energy of Supercapacitors December 18th, 2014

Environment

Nanoparticles Prove Effective in Removing Phosphor from Calcareous Soil December 10th, 2014

Detecting gases wirelessly and cheaply: New sensor can transmit information on hazardous chemicals or food spoilage to a smartphone December 8th, 2014

Nanocatalysts Can Reduce Pollution Caused by Diesel Engines December 4th, 2014

Green meets nano: Scientists at TU Darmstadt create multifunctional nanotubes using nontoxic materials December 3rd, 2014

Energy

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

How does enzymatic pretreatment affect the nanostructure and reaction space of lignocellulosic biomass? December 18th, 2014

Iranian Scientists Use Nanotechnology to Increase Power, Energy of Supercapacitors December 18th, 2014

Lifeboat Foundation gives 2014 Guardian Award to Elon Musk December 16th, 2014

Solar/Photovoltaic

Oregon researchers glimpse pathway of sunlight to electricity: Collaboration with Lund University uses modified UO spectroscopy equipment to study 'maze' of connections in photoactive quantum dots December 19th, 2014

Lifeboat Foundation gives 2014 Guardian Award to Elon Musk December 16th, 2014

Stacking two-dimensional materials may lower cost of semiconductor devices December 11th, 2014

New Technique Could Harvest More of the Sun's Energy December 9th, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE