Navigation Links
Research highlights potential for improved solar cells
Date:2/10/2009

rged nanocrystals from the measured region of the sample. Therefore, when crystals are subjected to light, the stirring eliminates the possibility that charged nanocrystals will absorb a second photon. While stirring of some samples did not affect the results of the measurements, other samples showed a significant difference in the apparent carrier multiplication yields measured under static and stirred conditions. Since most previous studies were performed on static samples, these results suggest that discrepancies noted by other researchers arise at least in part from uncontrolled photoionization, which stirring seeks to eliminate.

The Los Alamos researchers re-evaluated carrier multiplication efficiencies when photoionization was suppressed. The results are encouraging.

While the newly measured electron yields are lower than previously reported, the efficiency of carrier multiplication is still greater than in bulk solids. Specifically, both the energetic onset and the energy required to generate an extra electron in nanocrystals are about half of those in bulk solids.

These results indicate significant promise for nanosized crystals as efficient harvesters of solar radiation.

"Researchers still have a lot of work to do," Klimov cautioned. "One important challenge is to figure out how to design a material in which the energetic cost to create an extra electron can approach the limit defined by a semiconductor band gap. Such a material could raise the fundamental power conversion limit of a solar cell from 31 percent to above 40 percent."


'/>"/>

Contact: James E. Rickman
jamesr@lanl.gov
505-665-9203
DOE/Los Alamos National Laboratory
Source:Eurekalert

Page: 1 2 3

Related biology technology :

1. Research Triangle Area Health Care Collaborative Launches Bridges to Excellence(R) Initiative to Improve Quality and Lower Costs
2. The Multiple Myeloma Research Consortium (MMRC) and Proteolix Initiate Phase 2 Clinical Trial Investigating Carfilzomib for the Treatment of Multiple Myeloma
3. BioMarin Licenses Technology From Leading Cystic Fibrosis Research Laboratory at the University of California, San Francisco
4. IDM Pharma Names Dr. Jeffrey W. Sherman Chief Medical Officer and Senior Vice President of Research and Development
5. Dawson James Securities Initiates Research Coverage on CryoCor, Inc. (Nasdaq: CRYO) with a Strong Buy Rating and $6.00 Target Price
6. eResearchTechnology to Present at the Thomas Weisel Healthcare Conference 2007 on September 5th
7. The Debiopharm Life Sciences Award Goes to Dr Nusser for his Outstanding Research in Neuroscience
8. Study Published in Clinical Cancer Research Confirms Potential Of Peregrines Bavituximab Combined With Radiation In Lung Cancer
9. Dow AgroSciences and Exelixis Plant Sciences Announce Major Research Collaboration, Asset Purchase to Advance Gene Discovery and Validation
10. Revolutionary Genomics Research Group Opens Boston Office; Provides DNA Evidence in Workers Comp Cases
11. Richard Schulz Receives the Coveted GCPj Award for Best Clinical Researcher of the Year
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/15/2014)... septembre 2014 La deuxième édition annuelle ... (semaine internationale sur la sensibilisation au plasma) sera ... de la Plasma Protein Therapeutics Association ... l,IPAW vise à : , Sensibiliser ... collecte du plasma-aphérèse , Reconnaître la contribution ...
(Date:9/14/2014)... functions in a wide variety of ways, including by ... can take on another form and perform no or ... wrongly can cause serious diseases such as Alzheimer,s, Parkinson,s ... a tendency to "infect" other molecules of the same ... plaques. These amyloids can damage cells and tissues and ...
(Date:9/12/2014)... Advancing the front lines of research ... biological threats is the mission of an international ... and the Georgian National Academy of Sciences, and ... Security Programme of the North Atlantic Treaty Organization ... series, the event is titled “Nanotechnology to Aid ...
(Date:9/11/2014)... (PRWEB) September 12, 2014 RURO, ... radio-frequency identification (RFID) solutions and sample management solutions ... , RURO completed work on the most recent ... and it has already seen mass adoption, especially ... release of version 5.0 brought an entirely new ...
Breaking Biology Technology:L' International Plasma Awareness Week célébrera les donneurs et braquera les projecteurs sur les maladies rares 2L' International Plasma Awareness Week célébrera les donneurs et braquera les projecteurs sur les maladies rares 3Measuring modified protein structures 2Measuring modified protein structures 3Worcester Polytechnic Institute to Lead Scientific Workshop on Nanoscale Defenses for Biological and Chemical Threats 2Worcester Polytechnic Institute to Lead Scientific Workshop on Nanoscale Defenses for Biological and Chemical Threats 3Limfinity® Version 5.1 Available 2
... June 1, 2011 VWR International, LLC, a ... announced today that it acquired the business of ... Founded in 1985, BioExpress is a well-respected ... segments, and offers over 200 well-known, multi-national brands, ...
... ( www.investoruprising.com ) has released "A Guide to Biotech ... Exchange Traded Funds (ETFs) and mutual funds, which is ... (Logo: http://photos.prnewswire.com/prnh/20110411/NY80781LOGO-a) "A Guide to ... the leading biotech mutual funds and ETFs. It explains ...
... Waters Corporation (NYSE: WAT ) ... System, the highest performing UPLC® system ever engineered ... level.  For scientists challenged by the most difficult ... system dispersion and lowest carryover in the industry ...
Cached Biology Technology:VWR International, LLC Acquires BioExpress Corp. 2Investor Uprising Publishes Free Biotech Investment Report 2Investor Uprising Publishes Free Biotech Investment Report 3Waters Introduces Highest Performing UPLC Ever Engineered - the New ACQUITY UPLC I-Class 2Waters Introduces Highest Performing UPLC Ever Engineered - the New ACQUITY UPLC I-Class 3Waters Introduces Highest Performing UPLC Ever Engineered - the New ACQUITY UPLC I-Class 4
(Date:9/15/2014)... fears that reef biodiversity may not provide the level ... , In an international study published today, Professor David ... Reef Studies (Coral CoE) says we need to identify ... , In coral reefs, just as in any modern-day ... safe and functioning. , Professor Bellwood says, in ...
(Date:9/15/2014)... vision document, released today by the National Academy ... goals, objectives, and strategies for the program and ... next five years (2015-2020). In addition, the ... be funded in 2015, will include exploratory grants, ... , The $500 million, 30-year program to be ...
(Date:9/15/2014)... Conditions on Earth for the first 500 million years ... the present day, complete with oceans, continents and active ... geologic eon, called the Hadean, has gained substantial new ... that formed more than 4 billion years ago with ... as a possible geological analog for early Earth. , ...
Breaking Biology News(10 mins):Specialized species critical for reefs 2NAS Gulf Research Program announces strategic vision, initial opportunities 2NAS Gulf Research Program announces strategic vision, initial opportunities 3NAS Gulf Research Program announces strategic vision, initial opportunities 4Early Earth less hellish than previously thought 2Early Earth less hellish than previously thought 3
... and Matthew Champion from the University of Notre Dame,s ... to directly detect bacterial protein secretion, which could provide ... The Champions point out that bacteria ... beyond their cell membrane in order to interact with ...
... by several orders of magnitude. The molecular mechanism by which ... and thus slows cell growth is described by biophysicists at ... the Online Early Edition of the journal PNAS . ... showed that Ras puts a phosphate chain under tension to ...
... MA A new article published today in ... evidence to suggest the current obesity epidemic in the ... high fructose corn syrup (HFCS). The commentary concludes ... research, there is overwhelming evidence showing HFCS is nutritionally ...
Cached Biology News:Notre Dame research could provide new insights into tuberculosis and other diseases 2RUB researchers clarify catalysis mechanism of cell growth protein Ras 2RUB researchers clarify catalysis mechanism of cell growth protein Ras 3Scientists conclude high fructose corn syrup should not be blamed for obesity 2
... Mac OS X provides the most highly ... sequence analysis and molecular biology data management ... With Vector NTI Suite you can store ... diverse types of molecular biology data all ...
Use as the souce of CETP enzyme for screening CETP inhibitors. Use in conjunction with the CETP activity assay kit (K601-100)....
See product name for description....
... S-Adenosyl-Homocysteine. S-Adenosyl Homocysteine 100%,S-Adenosyl Methionine 2.5%,Adenosine ... 0.27%,Homocysteine ... <0.1%,L-Cysteine ... Assay Range: 0.1 ug/ml to 1 ...
Biology Products: