Navigation Links
Popcorn-ball design doubles efficiency of dye-sensitized solar cells
Date:4/10/2008

A new approach creates a dramatic improvement in cheap solar cells now being developed in laboratories.

By using a popcorn-ball design tiny kernels clumped into much larger porous spheres researchers at the University of Washington are able to manipulate light and more than double the efficiency of converting solar energy to electricity. The findings will be presented today in New Orleans at the national meeting of the American Chemical Society.

"We think this can lead to a significant breakthrough in dye-sensitized solar cells," said lead author Guozhong Cao, a UW professor of materials science and engineering.

Dye-sensitized solar cells, first popularized in a scientific article in 1991, are more flexible, easier to manufacture and cheaper than existing solar technologies. Researchers have tried various rough surfaces and achieved higher and higher efficiencies. Current lab prototypes can convert just over one tenth of the incoming sun's energy into electricity. This is about half as efficient as the commercial, silicon-based cells used in rooftop panels and calculators.

The UW researchers did not attempt to maximize the overall efficiency of a dye-sensitized solar cell to match or beat these previous records. Instead, they focused on developing new approaches and compared the performance of a homogeneous rough surface with a clumping design. One of the main quandaries in making an efficient solar cell is the size of the grains. Smaller grains have bigger surface area per volume, and thus absorb more rays. But bigger clumps, closer to the wavelength of visible light, cause light to ricochet within the thin light-absorbing surface so it has a higher chance of being absorbed.

"You want to have a larger surface area by making the grains smaller," Cao said. "But if you let the light bounce back and forth several times, then you have more chances of capturing the energy."

Other researchers have tried mixi
'/>"/>

Contact: Hannah Hickey
hickeyh@u.washington.edu
206-543-2580
University of Washington
Source:Eurekalert

Page: 1 2

Related biology news :

1. Specially-designed soils could help combat climate change
2. Carnegie Mellon scientists develop fluorescent proteins for live cell imaging, biosensor design
3. Book is the first high-resolution digital mouse brain atlas designed for Web applications
4. HIV isolate from Kenya provides clues for vaccine design
5. Singulex Teams With Wyeth Pharmaceuticals to Translate Pre-Clinical Biomarker Research Into Clinical Study Design
6. Synaptics SecurePad(TM) Selected as CES Innovations 2008 Design and Engineering Award Honoree
7. Researchers successfully simulate photosynthesis and design a better leaf
8. IGERT fellows to design biodevices using flexible electronics
9. Bangladesh to dramatically expand technology that doubles efficiency of urea fertilizer use
10. Fujitsu Combines Capacity, Performance and Power Efficiency Into the Industrys First 320GB 7200 RPM 2.5" Sata Hard Disk Drive
11. EPA and research efficiency
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/21/2014)... Beth Israel Deaconess Medical Center (BIDMC ) are among ... Scientific Minds 2014," a comprehensive list compiled ... for science metrics and research performance analysis. ... "are performing and publishing work that their peers recognized ... to a Thomson Reuters statement. Researchers were identified based ...
(Date:8/21/2014)... A study recently published in the journal Carcinogenesis ... a new role for the protein adenomatous polyposis coli ... of cancer-related deaths in the U.S. , Lead author ... Biosciences and co-leader of the Cancer Biology program at ... of her career trying to understand the various activities ...
(Date:8/21/2014)... involves the pancreas digesting itself resulting in severe abdominal ... UK around 20,000 patients are diagnosed with the disease ... and treatment is restricted to intravenous fluid and nutritional ... of Life Sciences, who led the research, said "The ... gall stones and excessive alcohol intake combined with a ...
Breaking Biology News(10 mins):BIDMC researchers named among 'the most influential scientific minds' 2BIDMC researchers named among 'the most influential scientific minds' 3Research offers insight into cellular biology of colorectal cancer 2Research offers insight into cellular biology of colorectal cancer 3Insulin offers new hope for the treatment of acute pancreatitis 2
... Remote reefs can be tougher than they look,Western Australia,s ... Isolated coral reefs can recover from catastrophic damage ... long-term study by marine biologists from the Australian Institute ... Excellence for Coral Reef Studies (CoECRS) has shown. ...
... today announced it would fund its three Bioenergy ... to continued congressional appropriations. The three Centers including ... Ridge National Laboratory, the Great Lakes Bioenergy Research ... in partnership with Michigan State University, and the ...
... Nature Conservancy, and Central Michigan University have presented their findings ... study published in the Canadian Journal of Fisheries and ... we have found no evidence that Asian carp are widespread ... Lake Michigan and parts of lakes Erie and St Clair," ...
Cached Biology News:Remote reefs can be tougher than they look 2Remote reefs can be tougher than they look 3Energy Department announces 5-year renewal of funding for Bioenergy Research Centers 2Notre Dame study finds Asian carp DNA not widespread in the Great Lakes 2
(Date:8/20/2014)... 20, 2014  PAREXEL International Corporation (NASDAQ: ... at the Baird Healthcare Conference in New York.  ... Officer, will be making a presentation on PAREXEL and ... Sept. 3, 2014. A live webcast of ... of PAREXEL,s website at www.PAREXEL.com in the ...
(Date:8/20/2014)... Not long ago, it was more or ... late in the development cycle – even after the ... suggest that, like many things GxP, expectations for early ... multiple drug sponsors have been required by authorities to ... phase I/II. It’s not only clinical trial material containers ...
(Date:8/20/2014)... Stimulating nerves in your ear could improve the health ... at the University of Leeds used a standard TENS ... apply electrical pulses to the tragus, the small raised ... front of the ear canal. , The stimulation changed ... by reducing the nervous signals that can drive failing ...
(Date:8/20/2014)... 20, 2014 GraphDB™ 6.0 ... including improvements to the enterprise replication cluster, faster ... Lucene, SOLR and Elasticsearch. This release happens to ... performance triplestore – GraphDB™ was formerly known as ... the only mature enterprise resilient RDF triplestore will ...
Breaking Biology Technology:PAREXEL International To Present At Baird Healthcare Conference 2Are Extractable and Leachables going Phase-Appropriate? New Webinar Hosted by Xtalks 2'Tickling' your ear could be good for your heart 2Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 2Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 3Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 4
... 15 /PRNewswire-Asia-FirstCall/ -- China,Biologic Products, Inc. (OTC Bulletin ... the leading plasma-based pharmaceutical companies in the,People,s Republic ... will present at the upcoming China Rising Conference ... on May 18, 2009 and the 3rd Annual ...
... May 15 /PRNewswire-Asia/ -- Tiens Biotech Group (USA), Inc. (the,"Company" ... , today,announced financial results for the first quarter ended ... the first quarter of 2009 increased 42% to $18.2 million,compared ... a,significant increase in international sales. , ...
... MUNICH, May 15 , ... Addressing the,Challenges of Getting to Blood Pressure Goal ... The SHARE steering committee announce ... (SHARE) program on World,Hypertension Day 2009 (17th May). ...
Cached Biology Technology:China Biologic Products to Present at CCG IR's China Rising Conference and Oppenheimer's China Dragon Call Conference in New York 2China Biologic Products to Present at CCG IR's China Rising Conference and Oppenheimer's China Dragon Call Conference in New York 3China Biologic Products to Present at CCG IR's China Rising Conference and Oppenheimer's China Dragon Call Conference in New York 4Tiens Biotech Group (USA) Reports First Quarter Results 2Tiens Biotech Group (USA) Reports First Quarter Results 3Tiens Biotech Group (USA) Reports First Quarter Results 4Tiens Biotech Group (USA) Reports First Quarter Results 5Tiens Biotech Group (USA) Reports First Quarter Results 6Tiens Biotech Group (USA) Reports First Quarter Results 7Tiens Biotech Group (USA) Reports First Quarter Results 8Tiens Biotech Group (USA) Reports First Quarter Results 9Tiens Biotech Group (USA) Reports First Quarter Results 10Tiens Biotech Group (USA) Reports First Quarter Results 11SHARE Program Launched to Address the Challenges of Achieving Blood Pressure Goal 2SHARE Program Launched to Address the Challenges of Achieving Blood Pressure Goal 3SHARE Program Launched to Address the Challenges of Achieving Blood Pressure Goal 4SHARE Program Launched to Address the Challenges of Achieving Blood Pressure Goal 5
... strain containing an overproducing clone of T4 DNA ... of a phosphodiester bond between juxtaposed 5' ... RNA. It repairs single-stranded nicks in duplex DNA, ... blunt-end and cohesive-end fragments of duplex DNA or ...
Goat polyclonal to Haptoglobin ( Abpromise for all tested applications). Antigen: Affinity purified human haptoglobin. Entrez GeneID: 3240 Swiss Protein ID: P00738...
SHEEP ANTI BOVINE BETA-LACTOGLOBULIN A...
ANTI STENOTROPHOMONAS MALTOPHILIA...
Biology Products: