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:8/20/2014)... that American Indians largely were wiped out by diseases ... brought to the New World by European explorers., One ... lived in the Americas shortly before Europeans arrived, and ... diseases., But new research led by anthropological geneticists Anne ... the University of Tubingen in Germany indicates the diagnosis ...
(Date:8/20/2014)... Group finds that the vascular access device market in ... and China (BRIC) was valued ... of the United States market that year. ... as a result of strong economic expansion, improving access to healthcare ... Resources Group,s coverage of the BRIC vascular access device market: ...
(Date:8/20/2014)... JOSE, Calif. , Aug. 20, 2014 /PRNewswire-iReach/ ... highlights the transformative collaboration between the school,s bioengineering ... As part of the Intel® Software Academic Program, ... computer sciences and the human body.  ... The study exhibits the work of Dr. ...
(Date:8/19/2014)... August 20, 2014 One of ... medicine is an inadequate vascular supply. Nutrient and ... decellularized tissues is critical for successful regeneration and ... to mitigate deficiencies in vascularization and promote angiogenesis ... bioactivity, optimizing scaffold design and architecture, and enhancing ...
Breaking Biology Technology:Unusual discovery leads to fascinating tuberculosis theory 2Unusual discovery leads to fascinating tuberculosis theory 3BRIC Vascular Access Device Market Valued at $1.6 Billion in 2013, Similar to the U.S. Market 2BRIC Vascular Access Device Market Valued at $1.6 Billion in 2013, Similar to the U.S. Market 3Intel and University of San Diego Bioengineering Department Release Case Study on Health Sciences Research 2Vascularization in Tissue Engineering Highlighted at 12th New Jersey Symposium on Biomaterials Science 2
... SEATTLE, Dec. 11 Dendreon Corporation (Nasdaq: DNDN ) ... offering have exercised in full their option to purchase an ... price of $24.75 per share. The exercise of the ... of 17,250,000 shares of common stock. Dendreon expects to ...
... , SAN DIEGO, Dec. 11 Ambit ... Texas M. D. Anderson Cancer Center of the first patient in the ... Phase 2 pivotal trial in patients with relapsed or refractory acute myeloid ... selective small molecule that was specifically designed as a FMS-like tyrosine kinase-3 ...
... 11 /PRNewswire-FirstCall/ - Oncolytics Biotech Inc. (TSX:ONC, NASDAQ: ONCY ... of Dr. Alan Warrander to the role of Senior ... Warrander will be responsible for the execution of the ... President and CEO of Oncolytics. "Having reached an agreement ...
Cached Biology Technology:Dendreon Announces Exercise of Option by Underwriters in its Common Stock Offering 2Dendreon Announces Exercise of Option by Underwriters in its Common Stock Offering 3Ambit Biosciences Initiates First Phase 2 Clinical Trial of AC220 in Acute Myeloid Leukemia 2Ambit Biosciences Initiates First Phase 2 Clinical Trial of AC220 in Acute Myeloid Leukemia 3Ambit Biosciences Initiates First Phase 2 Clinical Trial of AC220 in Acute Myeloid Leukemia 4Ambit Biosciences Initiates First Phase 2 Clinical Trial of AC220 in Acute Myeloid Leukemia 5Oncolytics Biotech(R) Inc. Appoints Senior Vice President, Global Licensing and Business Development 2Oncolytics Biotech(R) Inc. Appoints Senior Vice President, Global Licensing and Business Development 3
(Date:8/21/2014)... A landmark study aimed at improving the food intake, ... long-term care homes is among three projects at the ... grants from the Canadian Institutes of Health Research (CIHR). ... Applied Health Sciences at Waterloo, and a Schlegel research ... two years to investigate why many Canadians living in ...
(Date:8/21/2014)... Saturday to Wednesday, Oct. 18-22, 2014 , ... Harbor Drive, San Diego, CA 92101 , ... other presentations of the latest research in human ... session featuring high-scoring abstracts on rare genetic variants ... cancers, and treatment for sun sensitivity (Saturday, Oct. ...
(Date:8/21/2014)... Researchers from North Carolina State University have developed a ... The model has applications for creating new materials as ... , "Our new technique allows us to model much ... so much more quickly," says Nan Li, lead author ... student in NC State,s Department of Materials Science and ...
Breaking Biology News(10 mins):Grants will fund landmark aging research at Waterloo 2American Society of Human Genetics 2014 Annual Meeting 2Researchers develop models to study polyelectrolytes, including DNA and RNA 2
... NOAA/Virginia Sea Grant has awarded Virginia Tech $119,000 to ... virus in both shucked and unshucked oysters. , The ... High Pressure Processing Laboratory, and Laura Douglas, lab manager, ... schedules. The laboratory is a facility of the Department ...
... a new protein that plays a critical role in enabling ... or stress, as well as in the progressive loss of ... Their findings, they said, suggest new approaches to prevent or ... in the U.S. The team reports its findings in the ...
... lifespan in yeast, worms, and flies keeps blood sugar ... the August Cell Metabolism. The findings suggest therapeutic interventions ... as type 2 diabetes, which frequently arise with age, ... with an excess of the protein Sirt1 in cells ...
Cached Biology News:Use of high hydrostatic pressure to inactivate Hepatitis A virus in oysters studied 2Newly Discovered Role for Heart Response Enzyme May Yield Better Heart Failure Therapy 2Life-extending protein keeps blood sugar in check 2
... Protein Purification Plates are designed for quick ... The 96-well plates feature two 0.25mm holes ... each well. The wells remain liquid-tight during ... during which time the protein diffuses from ...
... the state-of-the-art in permanent mounting media. ... preservation of immunohistochemical organic insoluble substrates ... New Fuchsin, and any other organic ... sections. Clarin can be used for ...
... industry's first siRNA sequence design software in ... these tools consistent with new experimental strategies ... of RNAi. With the introduction of ... tools, OligoEngine is pleased to offer the ...
... been designed and created in order to ... genotyping analysis tool. We incorporated the suggestions ... the software. Their main requirements were ease- ... acquisition cost. GeneMarker can perform analysis ...
Biology Products: