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

Arrowhead to Present at BioCentury's NewsMakers in the Biotech Industry Conference September 19th, 2014

SouthWest NanoTechnologies (SWeNT) Receives NIST Small Business Innovation Research (SBIR) Phase 1 Award to Produce Greater than 99% Semiconducting Single-Wall Carbon Nanotubes September 19th, 2014

Toward optical chips: A promising light source for optoelectronic chips can be tuned to different frequencies September 19th, 2014

New research points to graphene as a flexible, low-cost touchscreen solution September 19th, 2014

Chemistry

Development of Algorithm for Accurate Calculation of Average Distance Travelled by Low-Speed Electrons without Energy Loss that Are Sensitive to Surface Structure September 11th, 2014

Rice chemist wins rare NSF Special Creativity Award: Grant extension will bolster Zubarev's effort to produce gold nanorods September 8th, 2014

Iranian, Spanish Scientists Produce Recyclable Catalyst by Using Nanoparticles September 3rd, 2014

Production of Toxic Ion Nanosorbents with High Sorption Capacity in Iran August 17th, 2014

Possible Futures

Air Force’s 30-year plan seeks 'strategic agility' August 1st, 2014

IBM Announces $3 Billion Research Initiative to Tackle Chip Grand Challenges for Cloud and Big Data Systems: Scientists and engineers to push limits of silicon technology to 7 nanometers and below and create post-silicon future July 10th, 2014

Virus structure inspires novel understanding of onion-like carbon nanoparticles April 10th, 2014

Local girl does good March 22nd, 2014

Announcements

Arrowhead to Present at BioCentury's NewsMakers in the Biotech Industry Conference September 19th, 2014

SouthWest NanoTechnologies (SWeNT) Receives NIST Small Business Innovation Research (SBIR) Phase 1 Award to Produce Greater than 99% Semiconducting Single-Wall Carbon Nanotubes September 19th, 2014

Toward optical chips: A promising light source for optoelectronic chips can be tuned to different frequencies September 19th, 2014

New research points to graphene as a flexible, low-cost touchscreen solution September 19th, 2014

Environment

Iranian Nano Scientists Create Flame-Resistant Polymers September 13th, 2014

NanoStruck has a High Recovery Rate on Mine Tailings: retrieval of up to 96% of Gold, 88% of Silver and 86% of Palladium September 12th, 2014

Nanostruck announces 87.6% recovery of 56 GMS/ton silver tailings samples September 12th, 2014

Boosting armor for nuclear-waste eating microbes September 12th, 2014

Energy

IEEE International Electron Devices Meeting To Celebrate 60th Anniversary as The Leading Technical Conference for Advanced Semiconductor Devices September 18th, 2014

Rice rolls 'neat' nanotube fibers: Rice University researchers' acid-free approach leads to strong conductive carbon threads September 15th, 2014

Simple, Cost-Effective Method Proposed for Synthesizing Zinc Oxide Nanopigments September 15th, 2014

UT Arlington research uses nanotechnology to help cool electrons with no external sources September 11th, 2014

Solar/Photovoltaic

Simple, Cost-Effective Method Proposed for Synthesizing Zinc Oxide Nanopigments September 15th, 2014

Indium/Copper Sulfide Compound Semi-Conductor Synthesized through New Method September 8th, 2014

Material development on the nanoscale: Doped graphene nanoribbons with potential September 8th, 2014

Layered graphene sandwich for next generation electronics September 8th, 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