Navigation Links
Trapping sunlight with silicon nanowires
Date:3/4/2010

Solar cells made from silicon are projected to be a prominent factor in future renewable green energy equations, but so far the promise has far exceeded the reality. While there are now silicon photovoltaics that can convert sunlight into electricity at impressive 20 percent efficiencies, the cost of this solar power is prohibitive for large-scale use. Researchers with the Lawrence Berkeley National Laboratory (Berkeley Lab), however, are developing a new approach that could substantially reduce these costs. The key to their success is a better way of trapping sunlight.

"Through the fabrication of thin films from ordered arrays of vertical silicon nanowires we've been able to increase the light-trapping in our solar cells by a factor of 73," says chemist Peidong Yang, who led this research. "Since the fabrication technique behind this extraordinary light-trapping enhancement is a relatively simple and scalable aqueous chemistry process, we believe our approach represents an economically viable path toward high-efficiency, low-cost thin-film solar cells."

Yang holds joint appointments with Berkeley Lab's Materials Sciences Division, and the University of California Berkeley's Chemistry Department. He is a leading authority on semiconductor nanowires - one-dimensional strips of materials whose width measures only one-thousandth that of a human hair but whose length may stretch several microns.

"Typical solar cells are made from very expensive ultrapure single crystal silicon wafers that require about 100 micrometers of thickness to absorb most of the solar light, whereas our radial geometry enables us to effectively trap light with nanowire arrays fabricated from silicon films that are only about eight micrometers thick," he says. "Furthermore, our approach should in principle allow us to use metallurgical grade or "dirty" silicon rather than the ultrapure silicon crystals now required, which should cut costs even further."

Ya
'/>"/>

Contact: Lynn Yarris
lcyarris@lbl.gov
510-486-5375
DOE/Lawrence Berkeley National Laboratory
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Solar power game-changer: Near perfect absorption of sunlight, from all angles
2. Sunlight Research(TM), Releases its Osiris Therapeutics Stem Cell Patent Report
3. Nanotube forests grown on silicon chips for future computers, electronics
4. Worlds most complex silicon phased-array chip developed at UC-San Diego
5. Align Technology, Inc. Ranked 23rd in Deloittes Technology Fast 50 Program for Silicon Valley Scientific & Medical Equipment, and Bio-Technology Companies
6. Job-related stress: NIST demonstrates fatigue effects in silicon
7. Move over, silicon: Advances pave way for powerful carbon-based electronics
8. UDs Appelbaum wins NSF Career Award for research on silicon spintronics
9. UCT Specialties (Formerly Petrarch) Announces the Release of Their New Product Guides for Silanes, Silicones, Platinum Catalyst and Glass Coatings
10. UM physicists show electrons can travel over 100 times faster in graphene than in silicon
11. Foldable and stretchable, silicon circuits conform to many shapes
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Trapping sunlight with silicon nanowires
(Date:7/10/2014)... , July 10, 2014  Franciscan ... use of capnography for respiratory monitoring outside ... of healthcare leaders in embracing state-of-the-art patient ... effectively patients are breathing and can alert ... By measuring the amount of carbon dioxide ...
(Date:7/10/2014)... -- Research and Markets ( http://www.researchandmarkets.com/research/s3bqj2/photonic ) has ... Integrated Circuit (Monolithic Integration, Hybrid Integration, Module Integration) ... their offering. http://photos.prnewswire.com/prnh/20130307/600769 ... traces its roots in the latter half of ... went unexplored and unfulfilled for several decades owing ...
(Date:7/10/2014)... D.C., June 17, 2014 Using microscopic polymer ... specific gases, researchers at MIT,s Quantum Photonics Laboratory ... levels in the parts-per-billion range. Optical sensors are ... their high signal-to-noise ratio, compact, lightweight nature, and ... gas sensors had been developed before, the MIT ...
(Date:7/10/2014)... lithium-ion batteries that power our laptops and electric vehicles ... single charge with the help of a sponge-like silicon ... replace the graphite traditionally used in one of the ... the energy storage capacity of graphite. A paper describing ... published today in Nature Communications . , "Silicon ...
Breaking Biology Technology:Franciscan St. Anthony Health-Crown Point Underscores Patient Safety Commitment Through Expanded Use of Capnography 2International Photonic Integrated Circuit (Monolithic Integration, Hybrid Integration, Module Integration) Market - Forecasts to 2019 2Swell new sensors 2Silicon sponge improves lithium-ion battery performance 2Silicon sponge improves lithium-ion battery performance 3
... Dimensions , a Wisconsin data management firm, announced last ... the New York metro area by partnering with MailSurity ... company that develops paper scanning and data recognition technology, ... its software to process forms. , ,Parascript's software is ...
... rude noise somebody makes in a meeting after too ... population also knows that Enterprise Resource Planning isnt some ... single check to a vendor. , ,Im not out ... is apparently less obvious is that ERP systems dont ...
... provider of rich-media systems and software, is deploying its ... announced. , ,Sonic Foundry and media services provider ... Connect's new Virtual Law Viewer system for the ... MediaSite presentation recorders with the BxVideo RMXPRES hosting services, ...
Cached Biology Technology:Steering a project portfolio takes more than expensive software 2Steering a project portfolio takes more than expensive software 3Streaming video could make courtrooms into Internet conference calls 2
(Date:7/11/2014)... Salk Institute for Biological Studies, BGI, and other ... and reliability of the existing targeted gene correction ... which could significantly increased gene-correction efficiency in human ... online in Cell Stell Cell provides ... therapy. , The combination of stem cells and ...
(Date:7/11/2014)... July 11, 2014 Researchers have pioneered ... images. The new technology, called Virtual Finger, allows ... structures like neurons and synapses using the flat ... technology makes 3D imaging studies orders of magnitude ... an unprecedented level across many areas of experimental ...
(Date:7/11/2014)... the normal circumstances, astrocytes participate in normal ... and exhibit therapeutic and repairing effects on ... have found that nerve cells differentiated from ... reduced viability, which produces influences on subsequent ... General Hospital, Hebei United University, China demonstrated ...
Breaking Biology News(10 mins):A new genome editing method brings the possibility of gene therapies closer to reality 2Virtual finger enables scientists to navigate and analyze complex 3D images 2
... COLUMBUS, Ohio From the paleolithic diet to the raw ... they believe our ancient ancestors ate. But some of these ... new book on the evolution of the use of food and ... can learn from what our ancestors ate, many of our more ...
... E. coli food poisoning outbreaks developed more ... trials because of lack of commercial interest. University of ... neutralises the toxin produced by E. coli , which ... The team of scientists Dr Adrienne Paton, Associate Professor ...
... to phase out nuclear power by 2022 has reopened an ... Japan, which is still coming to terms with events at ... the SETAC journal Environmental Toxicology and Chemistry adds ... using research from the Chernobyl disaster. The issue ...
Cached Biology News:An 'all natural' diet? There's no such thing 2An 'all natural' diet? There's no such thing 3Potential treatment for deadly E. coli disease 2
... product contains 5 ml Dynabeads Tosylactivated (4.5 ... (tosyl) reactive groups. For coupling of antibodies ... on initial coupling with covalent binding of ... sulphydryll groups (SH)) occurringovernight. Coupling reactions can ...
Carrier-Free Recombinant Human Flt-3/Flk-2 Ligand (Flt3/Flk2 Ligand, Flt3L, Flt3-L, Flk2L, Flk2-L) 100 ug...
... II inhibitor (IC50 = 59.2 M). ... H 32 O 13 MolWeight: ... RT CAS: ... Soluble to 100 mM in DMSO ...
NAP-2 (5C7)...
Biology Products: