Navigation Links
MIT researchers develop a way to funnel solar energy
Date:9/12/2010

etween the hole and the electron is known as the bandgap.

The inner layer of the antenna contains nanotubes with a small bandgap, and nanotubes in the outer layer have a higher bandgap. That's important because excitons like to flow from high to low energy. In this case, that means the excitons in the outer layer flow to the inner layer, where they can exist in a lower (but still excited) energy state.

Therefore, when light energy strikes the material, all of the excitons flow to the center of the fiber, where they are concentrated. Strano and his team have not yet built a photovoltaic device using the antenna, but they plan to. In such a device, the antenna would concentrate photons before the photovoltaic cell converts them to an electrical current. This could be done by constructing the antenna around a core of semiconducting material.

The interface between the semiconductor and the nanotubes would separate the electron from the hole, with electrons being collected at one electrode touching the inner semiconductor, and holes collected at an electrode touching the nanotubes. This system would then generate electric current. The efficiency of such a solar cell would depend on the materials used for the electrode, according to the researchers.

Strano's team is the first to construct nanotube fibers in which they can control the properties of different layers, an achievement made possible by recent advances in separating nanotubes with different properties.

While the cost of carbon nanotubes was once prohibitive, it has been coming down in recent years as chemical companies build up their manufacturing capacity. "At some point in the near future, carbon nanotubes will likely be sold for pennies per pound, as polymers are sold," says Strano. "With this cost, the addition to a solar cell might be negligible compared to the fabrication and raw material cost of the cell itself, just as coatings and polymer components are sm
'/>"/>

Contact: Jessica Holmes
holmesj@mit.edu
617-253-2702
Massachusetts Institute of Technology
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Mount Sinai researchers analyze impact of chemical BPA in dental sealants used in children
2. Swine researchers seek answers to fibers low digestibility
3. Twins are intriguing research subjects for Notre Dame biometircs researchers
4. Researchers at UC Riverside find solution to cell death problem vexing stem cell research
5. Researchers at Childrens Hospital Los Angeles find diet-induced obesity accelerates leukemia
6. Researchers define role of CEP290 in maintaining ciliary function
7. Research about Brazilian marine biodiversity brings researchers from 5 countries together
8. Researchers identify how bone-marrow stem cells hold their breath in low-oxygen environments
9. Bochums researchers discover proton diode
10. U-M researchers receive largest single collection of psoriasis DNA samples
11. Researchers analyze the environmentalists paradox
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/29/2015)... , May 28, 2015 Research ... addition of the "Facial Recognition Market by ... - Global Forecast to 2020" report to ... have seen facial recognition technology become more efficient ... to gain traction and investment from the commercial ...
(Date:5/28/2015)... May 28, 2015 Industry analyst firm ... new report titled "Markets for Self-Healing Materials: 2015-2022." According ... capsule and vascular systems, biomaterials, relevant shape memory ... around $2.7 billion by 2020. The ... coverage of smart materials. Other recent n-tech reports have ...
(Date:5/27/2015)... , May 27, 2015   ... medication safety systems and image documentation solutions ... of comprehensive, technologically-advanced automation solutions, is pleased ... integration. The Codonics® Safe Label System® (SLS), ... in conjunction with the Omnicell Anesthesia Workstation, ...
Breaking Biology News(10 mins):Global advanced Facial Recognition Market Expected to Grow From $2.77 Billion in 2015 to $6.19 Billion in 2020, at an Estimated CAGR of 17.4% 2The Market for Self-Healing Materials to Reach $2.7 Billion by 2020 Says New n-tech Research Study 2The Market for Self-Healing Materials to Reach $2.7 Billion by 2020 Says New n-tech Research Study 3Codonics and Omnicell Expand Partnership 2Codonics and Omnicell Expand Partnership 3Codonics and Omnicell Expand Partnership 4
... high levels of genetic diversity and acquire mutations to ... a vaccine. David Nickle et al present here an ... diversity of HIV or other variable pathogens. , This ... the strains of the virus by describing the molecules ...
... a box glowing with fluorescent light, Stacie Grassano pulls out a ... plastic up to her face. Inside, a tree branch is speckled ... to Scott Costa. , Costa brings the branch close to his ... fungus success story." , For some, a fungus success story ...
... of eight hospitals in Peru has shown that opening ... of mechanically ventilated negative-pressure rooms and 18 times that ... The researchers, led by Rod Escombe from Imperial College ... rooms such as respiratory isolation rooms, TB wards, respiratory ...
Cached Biology News:Immunization rates hit record high in poor countries 2Immunization rates hit record high in poor countries 3
(Date:5/29/2015)... May 29, 2015 Delcath Systems, Inc. ... medical device company focused on oncology with an ... liver cancers, announces that results of a large, ... melanoma patients with hepatic metastases with the Delcath ... in an on-line abstract at the American Society ...
(Date:5/29/2015)... SILVER SPRING, Md. and RESEARCH TRIANGLE ... Therapeutics Corporation (NASDAQ: UTHR ) announced today that ... United Therapeutics, will provide an overview and update on the ... New York City . The ... on Thursday, June 4, 2015, at 11:00 AM Eastern Time, ...
(Date:5/28/2015)... , May 28, 2015 ... has announced the addition of Jain PharmaBiotech,s ... Technologies, Markets, and Companies" to their ... This report deals with therapeutic ... at improving patient care by monitoring drug ...
(Date:5/28/2015)... , May 27, 2015 Research and ... Jain PharmaBiotech,s new report "Cell Therapy - ... This report describes and evaluates cell ... to play an important role in the practice ... the old fashioned bone marrow transplants. Role of ...
Breaking Biology Technology:Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 2Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 3Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 4Positive Data With Delcath's CHEMOSAT Highlighted At ASCO 2015 5Global Therapeutic Drug Monitoring Market 2015-2024 2Global Cell Therapy Market 2015-2020 - Technologies, Markets and Companies 2
... Laboratory (NPL), in collaboration with Linkping University, Sweden, have ... be easily identified in ambient conditions using Electrostatic Force ... usually only applicable to the material that consists of ... synthesis of any number of layers is possible, the ...
... Applications International Corporation (SAIC) (NYSE: SAI ) ... chief executive officer of SAIC-Frederick, Inc., a wholly owned ... Dr. Larry Arthur, who has served as CEO since ... SAIC-Frederick provides operations and technical support to ...
... Benefiting from recent investments in production and enormous demand ... record quarter. The leading developer of topical biotechnology for hair ... over Q1 of 2010. It was the fastest growth since ... "Although Q1 delivered a stellar number — made ...
Cached Biology Technology:Dr. David Heimbrook Appointed Chief Executive Officer of SAIC-Frederick, Inc. 2Dr. David Heimbrook Appointed Chief Executive Officer of SAIC-Frederick, Inc. 3First-quarter 2011 Sales Reach $2.25M — 126% Growth Over Q1 of 2010 — for Biotech Developer Divine Skin 2First-quarter 2011 Sales Reach $2.25M — 126% Growth Over Q1 of 2010 — for Biotech Developer Divine Skin 3
...
The Holten mini vertical flow workbench provides a particle-free environment for sample protection against airborne contaminants....
...
... Shakers combine high durability and capacity ... of use. The patented triple-counterbalanced heavy-duty ... to run at high speed with ... temperature range is delivered with tight ...
Biology Products: