Navigation Links
In solar cells, tweaking the tiniest of parts yields big jump in efficiency
Date:1/20/2012

BUFFALO, N.Y. -- By tweaking the smallest of parts, a trio of University at Buffalo engineers is hoping to dramatically increase the amount of sunlight that solar cells convert into electricity.

With military colleagues, the UB researchers have shown that embedding charged quantum dots into photovoltaic cells can improve electrical output by enabling the cells to harvest infrared light, and by increasing the lifetime of photoelectrons.

The research appeared online last May in the journal Nano Letters. The research team included Vladimir Mitin, Andrei Sergeev and Nizami Vagidov, faculty members in UB's electrical engineering department; Kitt Reinhardt of the Air Force Office of Scientific Research; and John Little and advanced nanofabrication expert Kimberly Sablon of the U.S. Army Research Laboratory.

Mitin, Sergeev and Vagidov have founded a company, OPtoElectronic Nanodevices LLC. (OPEN LLC.), to bring the innovation to the market.

The idea of embedding quantum dots into solar panels is not new: According to Mitin, scientists had proposed about a decade ago that this technique could improve efficiency by allowing panels to harvest invisible, infrared light in addition to visible light. However, intensive efforts in this direction have previously met with limited success.

The UB researchers and their colleagues have not only successfully used embedded quantum dots to harvest infrared light; they have taken the technology a step further, employing selective doping so that quantum dots within the solar cell have a significant built-in charge.

This built-in charge is beneficial because it repels electrons, forcing them to travel around the quantum dots. Otherwise, the quantum dots create a channel of recombination for electrons, in essence "capturing" moving electrons and preventing them from contributing to electric current.

The technology has the potential to increase the efficiency of solar cell
'/>"/>

Contact: Charlotte Hsu
chsu22@buffalo.edu
716-645-4655
University at Buffalo
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Notre Dame researchers develop paint-on solar cells
2. Discovery of a dark state could mean a brighter future for solar energy
3. A light wave of innovation to advance solar energy
4. Solar power could get boost from new light absorption design
5. NTU and A*STAR Institute of Microelectronics develop cheaper yet efficient thin film solar cells
6. Researchers use carbon nanotubes to make solar cells affordable, flexible
7. Copper film could lower touch screen, led and solar cell costs
8. TU Delft: cheap and efficient solar cell made possible by linked nanoparticles
9. Nature offers key lessons on harvesting solar power, says U of T chemistry professor
10. How to produce flexible CIGS solar cells with record efficiency
11. U of T-led research improves performance of next-generation solar cell technology
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/18/2014)... KEEGO HARBOR, Mich. , Sept. 18, 2014  Health ... -based biotech firm investigating early-stage algae bioactive compounds and metabolic ... member to the company,s board of directors. Ms. Nola ... executive and investment advisor joined the board effective September 17, ... have Ms. Masterson agree to join our board," states ...
(Date:9/18/2014)... 18, 2014 Texas Governor Rick ... Texas A&M Health Science Center CEO Brett Giroir, ... Health and Human Services (HHS), State of Texas ... pandemic influenza vaccine manufacturing facility in Bryan, Texas, ... for the Texas A&M Biocorridor – a rapidly ...
(Date:9/18/2014)... Sept. 18, 2014 Research and Markets ... and Chinese Stem Cell Industry Report, 2014-2017" report ... undifferentiated biological cells that can differentiate into specialized cells ... cells. Stem cell therapy can be applied to treatment ... disease), nervous system diseases, damage or lesion of liver, ...
(Date:9/18/2014)... Research and Markets has announced the addition ... report to their offering. The ... and in-depth study on the current state of the ... a basic overview of the industry including definitions, classifications, ... analysis is provided for the international markets including development ...
Breaking Biology Technology:Health Enhancement Announces New Board Member In Advance Of Annual Shareholder Meeting 2Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 2Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 3Texas A&M Dedicates National Pandemic Influenza Vaccine Manufacturing Facility, on Track for 2016 Start-Up Phase 4Global and Chinese Stem Cell Industry Report, 2014-2017 2Global and Chinese Stem Cell Industry Report, 2014-2017 3Global Human Albumin Industry Report 2014 2Global Human Albumin Industry Report 2014 3
... Sheboygan, Wis. - Gov. Jim Doyle ... the Wisconsin Aerospace Authority - both of whom expressed ... for future space travel. , ,Mark Hanna, a city ... program, will join several already-named nominees for the commission, ...
... will have the exclusive global distribution rights to a stem ... with its developer, ThermoGenesis . , ,Under the terms ... product, known as the Auto Express System, to the ... of private umbilical cord blood banks. The AXP System extracts ...
... took another turn last month when the District Court of ... Cigar, Inc ., v. GoTo.com, Inc . , ,Plaintiff ... of Yahoo! , ,GoTo sold several keywords, ... various JR Cigar competitors. , ,As mentioned in my prior ...
Cached Biology Technology:Wisconsin spaceport committee moves closer to formation 2Are consumers confused by search engine ads? 2Are consumers confused by search engine ads? 3Are consumers confused by search engine ads? 4
(Date:9/18/2014)... tiny strands of nucleic acid that contain instructions for ... data, our DNA is copied into RNA molecules, which ... in our cells. , Several years ago, scientists ... other known RNAs, this molecule is circular, and was ... has been known about how they are produced. Moreover, ...
(Date:9/18/2014)... and ethnic groups describe losing eyesight as potentially ... more so than other conditions including: loss of ... 49% of non-Hispanic whites, 43% of Asians and ... ailment is the worst that could happen to ... AIDS/HIV. Hispanics and Asians ranked cancer first ...
(Date:9/18/2014)... devastated algal forests in the eastern Mediterranean Sea pose ... their distribution continues to expand as the climate warms, ... team of researchers led by Dr Adriana Vergs of ... Institute for Advanced Studies in Spain, is published in ... team surveyed more than 1000 kilometres of coastline in ...
Breaking Biology News(10 mins):Scientists find how mysterious 'circular RNA' is formed, claim muscular dystrophy link 2Americans rate losing eyesight as having greatest impact on their lives 2Americans rate losing eyesight as having greatest impact on their lives 3Tropical fish a threat to Mediterranean Sea ecosystems 2
... in protecting us from diseases, but how does it ... that before dendritic cells move to the lymph nodes ... move much faster. Immature dendritic cells patrol the tissues ... they undergo a rigorous maturation process. During this maturation ...
... A stunning discovery based on epigenetics (the inheritance of ... nutrient found in eggs and other foodsduring pregnancy may ... This finding by a team of biologists at Boston ... pregnancy to breast cancer. It also is the first ...
... who have had the common chest wall deformity known ... ability to exercise, according to a study published December ... conducted at 11 North American hospitals, involved telephone interviews ... 8 and 21 who had pectus excavatum surgery. ...
Cached Biology News:Immune cells reveal fancy footwork 2Eating eggs when pregnant affects breast cancer in offspring 2Marked improvement in body image, physical stamina, post-surgical pectus patients report 2Marked improvement in body image, physical stamina, post-surgical pectus patients report 3
... applications for the use of small interfering ... via the RNA interference (RNAi) pathway have ... molecular biology fields. siRNA for experimental use ... or enzymatically, and then transfected into the ...
... is commonly used as a fusion partner ... The GSTTag sequence has been reported to ... the solubility of its fusion partners. When ... GSTTag fusion proteins can be purified with ...
a1-Antitrypsin (human, alpha-1 AT)...
... demands of the routine trace metal analytical ... robust and simple to use instrumentation. The ... most challenging sample matrices found in the ... the toughest analytical challenges found in the ...
Biology Products: