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:4/17/2015)... Increasing adoption in ... to drive biometric systems market in ... According to a recently released TechSci Research ... biometric systems market in Saudi Arabia ... CAGR of over 22% through 2020. The market ...
(Date:4/13/2015)...  higi, a leading cloud-based consumer engagement platform that ... with their communities around health and wellness, announced today ... API.  ... and convenient vehicle to receive validated health information from ... The API will allow higi,s trusted partners, on a ...
(Date:4/6/2015)... OXFORD, Conn. , Apr. 6, 2015 /PRNewswire/ ... the "Company"), a biometric authentication company focused on ... it has filed provisional patent 62/143028 for ... CLOSE-PROXIMITY COMMUNICATIONS AND ENERGY TRANSFER  NXT-ID introduces ... wireless payments. This patent surrounds the use of ...
Breaking Biology News(10 mins):Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 2Saudi Arabia Biometric Systems Market to Grow at 22% Through 2020, Says TechSci Research 3higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 2higi Launches Seamless Access to HIPAA-Compliant Health Outcomes and Activity Data 3NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 2NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 3NXT-ID Patents Miniature, Low Power Wireless Magnetic Stripe 4
... ceremony at Oslo Concert Hall, seven pioneering researchers in ... as the first Kavli Prize laureates, receiving a gold ... Haakon Magnus. Joining His Royal Highness Crown ... of Science and Letters, the Ministry of Research of ...
... 17 September, in the context of France,s presidency of ... 2008, at the Grand Palais. The GMES (Global ... up to provide services relating to the environment, climate ... draw on data - mainly Earth observation data - ...
... test to detect whether a person might develop Alzheimer,s ... in their quest toward reversing the disease,s onset in ... Building on a study that started 20 years ago ... or in various stages of developing Alzheimer,s disease, the ...
Cached Biology News:Inaugural Kavli laureates honored in Oslo ceremony 2Major European program for the environment under the spotlight in Lille, France 2Researchers seeking to identify Alzheimer's risk focus on specific blood biomarker 2
(Date:4/21/2015)... Springfield, Mo. (PRWEB) April 21, 2015 ... vessels, HOLLOWAY AMERICA is slated to discuss its custom ... also present its reimagined website, which launched just prior ... Wed. and Thurs. (April 21, 22 and 23) at ... than 12,000 representatives of the world’s largest and most ...
(Date:4/20/2015)... 20, 2015 Stent retriever thrombectomy, an ... in the brain reduced disability after stroke, according ... MD, President of the Society of Vascular and ... a giant step forward that will change the ... patients," said Jovin, who is associate professor of ...
(Date:4/20/2015)... April 20, 2015 Orthobiologics are ... bone injuries. The orthobiologics market is a rewarding market, ... stakeholders. The global orthobiologics market report defines and segments ... The global orthobiologics market was valued at $5,712.4 million ... by 2019, at a CAGR of 6.7% from 2014 ...
(Date:4/20/2015)... April 20, 2015  Eli Lilly and Company (NYSE: ... several targeted cancer therapies, reflecting Lilly,s diverse oncology pipeline, ... Meeting 2015, held April 18-22 in Philadelphia ... to Patients" is the theme of this year,s AACR ... to broadening its portfolio of therapies that accelerate the ...
Breaking Biology Technology:HOLLOWAY AMERICA to Reveal Newly Designed Responsive Website at INTERPHEX 2015 Today 2HOLLOWAY AMERICA to Reveal Newly Designed Responsive Website at INTERPHEX 2015 Today 3SVIN President Tudor Jovin, MD, Co-Leads Groundbreaking Stroke Study In The New England Journal Of Medicine 2SVIN President Tudor Jovin, MD, Co-Leads Groundbreaking Stroke Study In The New England Journal Of Medicine 3Global Orthobiologics Market is Expected to Reach $7,900.2 Million by 2019, at a CAGR of 6.7% from 2014 to 2019 2Global Orthobiologics Market is Expected to Reach $7,900.2 Million by 2019, at a CAGR of 6.7% from 2014 to 2019 3Lilly Releases Early-Stage Pipeline Data at AACR Annual Meeting 2015 2Lilly Releases Early-Stage Pipeline Data at AACR Annual Meeting 2015 3Lilly Releases Early-Stage Pipeline Data at AACR Annual Meeting 2015 4Lilly Releases Early-Stage Pipeline Data at AACR Annual Meeting 2015 5Lilly Releases Early-Stage Pipeline Data at AACR Annual Meeting 2015 6
... day that a research scientist and university professor gets to see ... few months, Richard W. Siegel will get to watch his name ... a new title that seems light years away from laboratory benches ... MAX," has been a three-year labor of love for Siegel. From ...
... IN KEY GLOBAL MARKETS, RANCHO CORDOVA, Calif., ... a leading supplier of innovative products and,services that ... it has signed,a distribution agreement with Celling Technologies ... stem cells from bone,marrow. The distribution rights are ...
... Sept. 9 For the second consecutive,year, MedNet ... study management systems, has been recognized by,Inc. magazine ... private,organizations. With consistently strong growth over the past ... in the Twin Cities,metro area, and fifth among ...
Cached Biology Technology:Professor-turned-producer learns the movie biz 2Professor-turned-producer learns the movie biz 3Professor-turned-producer learns the movie biz 4Professor-turned-producer learns the movie biz 5ThermoGenesis Announces Distribution Agreement for Bone Marrow Stem Cell Device 2ThermoGenesis Announces Distribution Agreement for Bone Marrow Stem Cell Device 3ThermoGenesis Announces Distribution Agreement for Bone Marrow Stem Cell Device 4MedNet Solutions Again Recognized as one of the Fastest Growing US Companies 2
... for stabilizing 50g of purified RNA samples for ... delivers all of the advantages and applications you ... the RNA can be used for enzymatic applications ... has been optimised for the stabilization of aqueous ...
Blasticidin resistance gene (bsr), provided in a pORF plasmid. pORF is an expression plasmid selectable with Ampicillin....
Puromycin resistance gene (pac), provided in a pORF plasmid. pORF is an expression plasmid selectable with Ampicillin....
Plasmid expressing Zeocin resistance gene....
Biology Products: