Navigation Links
Light from silicon nanocrystal LEDs
Date:2/22/2013

This press release is available in German.

Silicon nanocrystals have a size of a few nanometers and possess a high luminous potential. Scientists of KIT and the University of Toronto/Canada have now succeeded in manufacturing silicon-based light-emitting diodes (SiLEDs). They are free of heavy metals and can emit light in various colors. The team of chemists, materials researchers, nanoscientists, and opto-electronic experts presents its development in the "Nano Letters" journal (DOI: 10.1021/nl3038689).

Silicon dominates in microelectronics and photovoltaics industry, but has been considered unsuitable for light-emitting diodes for a long time. However, this is not true for nanoscopic dimensions: Minute silicon nanocrystals can produce light. These nanocrystals consist of a few hundred to thousand atoms and have a considerable potential as highly efficient light emitters, as was demonstrated by the team of Professor Uli Lemmer and Professor Annie K. Powell from KIT as well as Professor Geoffrey A. Ozin from the University of Toronto. In a joint project, the scientists have now succeeded in manufacturing highly efficient light-emitting diodes from the silicon nanocrystals.

So far, manufacture of silicon light-emitting diodes has been limited to the red visible spectral range and the near infrared. As regards the efficiency of silicon diodes emitting red light, researchers from Karlsruhe are already top in the world. "Controlled manufacture of diodes emitting multicolor light, however, is an absolutely novelty," explains Florian Maier-Flaig, scientist of the Light Technology Institute (LTI) of KIT and doctoral student of the Karlsruhe School of Optics and Photonics (KSOP). KIT scientists specifically adjust the color of the light emitted by the diodes by separating nanoparticles depending on their size. "Moreover, our light-emitt
'/>"/>

Contact: Monika Landgraf
presse@kit.edu
49-721-608-47414
Helmholtz Association of German Research Centres
Source:Eurekalert  

Page: 1 2

Related biology news :

1. February highlights from Ecological Society of America publications
2. Researchers say sunlight yields more efficient carbon dioxide to methanol model
3. Colorado Marijuana Task Force Gives Green Light To "Pot Tourism"
4. Painting with catalysts: Nano-engineered materials for detoxifying water by use of sunlight
5. Shedding new light on infant brain development
6. Diamond sheds light on basic building blocks of life
7. Light-emitting bioprobe fits in a single cell
8. Ancient insects shed light on biodiversity
9. Nature Methods study: Using light to control cell clustering
10. New American Chemical Society video highlights 5 of chocolates sweet benefits
11. Evaluating evolutionary rates could shed light into functions of uncharacterized genes
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Light from silicon nanocrystal LEDs
(Date:7/11/2014)... that cannabinoid receptor type 1 can inhibit ... and reduce neurotransmitter release. However, some scholars ... increase extracellular Ca2+ influx and increase neurotransmitter ... Tongji Hospital Affiliated to Tongji Medical College, ... used whole cell voltage-clamp and calcium imaging ...
(Date:7/11/2014)... of all vertebrates, information is transmitted through synapses, ... signal to be passed from one brain cell ... abundant type of synapse, can be either excitatory ... memory, perception and cognition, and the balance between ... For instance, every time we learn something, ...
(Date:7/10/2014)... NEW YORK , June 27, 2014 /PRNewswire/ ... against Provectus Biopharmaceuticals, Inc. ("Provectus" or the "Company")(NYSE-MKT: ... action, filed in United States District Court, Middle ... Division, is on behalf of a class consisting ... otherwise acquired Provectus securities between December 17, 2013 ...
Breaking Biology News(10 mins):Blame it on the astrocytes 2SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 2SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 3
... shellfish, snails and other animals from the Pacific Ocean ... was interrupted by cooling conditions three million years ago, ... of California, Davis, and Peter Roopnarine at the California ... ice-free Arctic Ocean by 2050. That will restore conditions ...
... Pharmacy researchers have discovered a marine compound off the ... in laboratory tests, a finding they hope will fuel ... disease. The UF-patented compound, largazole, is derived from ... results from early studies today (Aug. 7) at an ...
... The University of Houston department of health and human performance ... a study promoting healthy dietary habits and physical activity. ... of Second Life (SL). , ... is part of the UH Texas Obesity Research Center,s (TORC) ...
Cached Biology News:Pacific shellfish ready to invade Atlantic 2Researchers find cancer-inhibiting compound under the sea 2Researchers find cancer-inhibiting compound under the sea 3TORC at UH turns to virtual world of Second Life for new study 2
(Date:7/14/2014)... San Mateo, CA (PRWEB) July 14, 2014 ... groundbreaking CONNECT patient registry platform, announced that ... Becker muscular dystrophies; the Phelan-McDermid Syndrome International ... primary Nephrotic Syndrome—have been awarded contracts by ... part of the creation of a new ...
(Date:7/13/2014)... -- The discovery 30 years ago of soccer-ball-shaped carbon ... nanotechnology research. Now, there appears to be a new ... Shanxi University and Tsinghua University in China have shown ... hollow molecular cage similar to a carbon buckyball. It,s ... only a matter of speculationdoes indeed exist. , "This ...
(Date:7/13/2014)... 2014 Deep Research Report on Global and China ... on the current state of the Nano Silver industry ... basic overview of the industry, including definitions, applications and ... market analysis are provided with a focus on history, ... comparison between the international and Chinese situation is also ...
(Date:7/12/2014)... York (PRWEB) July 12, 2014 ... for various reagents used in the life ... driving the life science reagents market towards ... include manufacturers and providers of life science ... Market Report: http://www.transparencymarketresearch.com/life-sciences-reagents-analytical-reagents.html . , The ...
Breaking Biology Technology:PatientCrossroads Fuels Development of New National Clinical Research Network 2PatientCrossroads Fuels Development of New National Clinical Research Network 3Researchers discover boron 'buckyball' 2Researchers discover boron 'buckyball' 32014 Nano Silver Industry in Global and China Regions Development Proposals Analysis Available at DeepResearchReports.com 22014 Nano Silver Industry in Global and China Regions Development Proposals Analysis Available at DeepResearchReports.com 3Transparency Market Research: Life Science Reagents Market- PCR Reagent Kits, Cell and Tissue Culture, Flow Cytometry, Electrophoresis and Chromatography 2Transparency Market Research: Life Science Reagents Market- PCR Reagent Kits, Cell and Tissue Culture, Flow Cytometry, Electrophoresis and Chromatography 3
... - Appointment Enhances Algeta,s Commercial Capabilities ... Cancer , Algeta ASA ... Kay has been appointed as President and Chief,Executive Officer and ... Thomas,Ramdahl will continue as Executive Vice President and Chief Technology,Officer ...
... TUSTIN, Calif., Dec. 11 Peregrine Pharmaceuticals, Inc. (Nasdaq: ... its Board of Directors, unexpectedly passed away on Wednesday. Dr. ... chairman since 2005. At the time of his death, Dr. ... , , "The sudden ...
... Alimera Sciences Inc., a privately held,biopharmaceutical company ... prescription ophthalmic pharmaceuticals, today reported,that enrollment has begun ... and efficacy,of Iluvien(TM) in patients with bilateral geographic ... The pilot ...
Cached Biology Technology:Algeta Appoints Andrew Kay as President and Chief Executive Officer 2Algeta Appoints Andrew Kay as President and Chief Executive Officer 3Algeta Appoints Andrew Kay as President and Chief Executive Officer 4Peregrine Pharmaceuticals Mourns Loss of Chairman Thomas A. Waltz 2Alimera Sciences Begins Pilot Study to Assess Safety and Efficacy of Iluvien(TM) in Patients With Bilateral Geographic Atrophy Due to AMD 2
XEDAR Antibody...
Xanthine Oxidase (Bovine Buttermilk). Monospecific by IEP. Some cross reactivity with Xanthine Oxidase of other species and tissues may occur....
Rabbit Anti-JNK1/SAPK pan, Polyclonal Antibody...
...
Biology Products: