Navigation Links
Evolution inspires more efficient solar cell design
Date:1/25/2013

The sun's energy is virtually limitless, but harnessing its electricity with today's single-crystal silicon solar cells is extremely expensive 10 times pricier than coal, according to some estimates. Organic solar cells polymer solar cells that use organic materials to absorb light and convert it into electricity could be a solution, but current designs suffer because polymers have less-than-optimal electrical properties.

Researchers at Northwestern University have now developed a new design for organic solar cells that could lead to more efficient, less expensive solar power. Instead of attempting to increase efficiency by altering the thickness of the solar cell's polymer layer a tactic that has preciously garnered mixed results the researchers sought to design the geometric pattern of the scattering layer to maximize the amount of time light remained trapped within the cell.

Using a mathematical search algorithm based on natural evolution, the researchers pinpointed a specific geometrical pattern that is optimal for capturing and holding light in thin-cell organic solar cells.

The resulting design exhibited a three-fold increase over the Yablonovitch Limit, a thermodynamic limit developed in the 1980s that statistically describes how long a photon can be trapped in a semiconductor.

A paper about the results, "Highly Efficient Light-Trapping Structure Design Inspired by Natural Evolution," was published January 3 in Scientific Reports, a publication of Nature.

In the newly designed organic solar cell, light first enters a 100-nanometer-thick "scattering layer," a geometrically-patterned dielectric layer designed to maximize the amount of light transmitted into the cell. The light is then transmitted to the active layer, where it is converted into electricity.

"We wanted to determine the geometry for the scattering layer that would give us optimal performance," said Cheng Sun, assistant
'/>"/>

Contact: Megan Fellman
fellman@northwestern.edu
847-491-3115
Northwestern University
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Brain State Technologies to Host Open House and Demonstrate Their Revolutionary Technology
2. Crisalix Awarded as a Leading Life Science Company that is Revolutionizing the Medical Industry
3. Research discovery could revolutionize semiconductor manufacture
4. Spanish scientists design a revolutionary data storage device
5. Revolutionary Tetrapod Quantum Dot Synthesis US Patent Granted
6. New UCLA Engineering research center to revolutionize nanoscale electromagnetic devices
7. Researchers peek at the early evolution of sex chromosomes
8. Discovered Evolution of Genomic Sequences -- from Ocean Archaea to Brain Cancer -- Leads to New Synthetic Replikin Vaccines for Infectious Diseases and Cancer
9. Evolution Issue of the Month 2. Natural Selection--Not the Best Idea Anyone Ever Had
10. Martha Stewart Reveals the Secret Behind her Radiant Skin is Revolutionary Anti-aging BIOEFFECT EGF SERUM
11. New Revolutionary Femoral Access Site Closure Device Shows Unparalleled Efficacy, Safety & Ease of Use, in a Wide Range of Patients Including Patients With a Challenging Anatomy
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/31/2014)... Available spectra is similar for ... and cultivation of a wide range of plants. ... with proven patented and pending wide spectrum technology. ... in critical applications in contrast to growth spectra ... customers have a large variety of differently sized ...
(Date:8/29/2014)... Electronic circuits are based on electrons, but one of ... photonic circuits, i.e. circuits based on light (photons) instead ... to create a stream of single photons and control ... sorts of attempts to achieve this control, but now ... creating a steady stream of photons emitted one at ...
(Date:8/29/2014)... Hills, NY (PRWEB) August 29, 2014 ... Burnt Hills Veterinary Hospital are seeking candidates to participate ... dogs with osteoarthritis. The ultimate goal of this ... donor stem cells into one or two arthritically affected ... treated joints. , Candidates for the current investigational ...
(Date:8/28/2014)... USA (PRWEB) August 28, 2014 SPIE ... of Physics and Optical Science and Director of the ... of North Carolina at Charlotte, and co-founder and Chairman ... to serve as the 2015 Vice President of SPIE, ... 2014 President Philip Stahl announced recent election results at ...
Breaking Biology Technology:Breakthrough in light sources for new quantum technology 2Burnt Hills Veterinary Hospital Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2Glenn Boreman, UNC Professor and Plasmonics Co-Founder, Elected to SPIE Presidential Chain 2
... Corporation,s (Amex: ETC ) ("ETC" or the ... contract with the Netherlands,Institute for Safety, NIFV, to ... Simulator for Aircraft Rescue Fire Fighting., The ... military helicopter,scenario consisting of AH-64 Apache helicopters parked ...
... FRANCISCO, Calif., Nov. 3 Portola,Pharmaceuticals, a ... advances in cardiovascular and inflammatory,diseases, and cancer, ... enrollment,in a large Phase II clinical trial ... inhibitor anticoagulant, for stroke prevention in patients ...
... Therapeutics, Inc.,(Nasdaq: HALO ), a biopharmaceutical ... matrix, today announced it has started,a Phase ... enzyme,(rHuPH20) co-formulations with Humulin(R) R (regular insulin ... Type 1 diabetic,patients. This study is designed ...
Cached Biology Technology:Environmental Tectonics Corporation's Simulation Division Receives New ADMS Contract from Netherlands Institute for Safety 2Environmental Tectonics Corporation's Simulation Division Receives New ADMS Contract from Netherlands Institute for Safety 3Portola Pharmaceuticals Initiates Phase II Trial of Betrixaban, its Novel Oral Factor Xa Inhibitor for Stroke Prevention in Atrial Fibrillation 2Portola Pharmaceuticals Initiates Phase II Trial of Betrixaban, its Novel Oral Factor Xa Inhibitor for Stroke Prevention in Atrial Fibrillation 3Portola Pharmaceuticals Initiates Phase II Trial of Betrixaban, its Novel Oral Factor Xa Inhibitor for Stroke Prevention in Atrial Fibrillation 4Halozyme Therapeutics Begins Phase 2 Clinical Trial of Insulin With rHuPH20 in Type 1 Diabetic Patients 2Halozyme Therapeutics Begins Phase 2 Clinical Trial of Insulin With rHuPH20 in Type 1 Diabetic Patients 3Halozyme Therapeutics Begins Phase 2 Clinical Trial of Insulin With rHuPH20 in Type 1 Diabetic Patients 4
(Date:8/29/2014)... stretch them, twist them, fold them: modern materials that ... potential, whether as artificial skin or electronic paper. , ... a challenge but a new way of working with ... a game-changer. , Previous success in the field ... use of precious gold and silver nanowires. , ...
(Date:8/28/2014)... pleased to announce the selection of Dr. Fred Baxendale ... acknowledges those who have served ESA for at least ... the Society that has reached an extraordinary level. Candidates ... Board and then voted on by the ESA membership. ... at Entomology 2014, ESA,s Annual Meeting in Portland, Oregon ...
(Date:8/28/2014)... news release is available in German . ... water fish, owes its name to a striking pattern of ... types, black cells, reflective silvery cells, and yellow cells emerge ... and arrange as a multilayered mosaic to compose the characteristic ... three cell types have to interact to form proper stripes, ...
Breaking Biology News(10 mins):Copper shines as flexible conductor 2Fred Baxendale selected as Honorary Member of the Entomological Society of America 2How the zebrafish gets its stripes 2How the zebrafish gets its stripes 3
... in German . , Researchers at the Max ... the Czech Academy of Sciences in Prague have developed a new ... acids, amino acids and other organic substances from plant or animal ... liter -- is sufficient to identify certain blood related metabolites. ...
... of fishing gear could help the world,s coral reefs and their ... team of scientists led by Dr Josh Cinner of the ARC ... has proposed that bans on fishing gear - like spear guns, ... in the recovery of reefs and fish populations hard hit by ...
... Although worlds apart, the way fish learn could be ... a new research study. A common species of fish ... nine-spined stickleback, could be the first animal shown to exhibit ... compare the behaviour of other sticklebacks with their own experience ...
Cached Biology News:An easy way to find a needle in a haystack by removing the haystack 2An easy way to find a needle in a haystack by removing the haystack 3Gear bans 'can help save reefs' 2Gear bans 'can help save reefs' 3Common fish species has 'human' ability to learn 2Common fish species has 'human' ability to learn 3
BD Primaria 35 mm Cell Culture Dish with Easy-Grip design, surface-modified polystyrene for enhanced cell culture. (20/sp, 200/ca) Packaging: 20 / sleeve, 500 / case ...
... is a software package that provides ... for custom buffer creation, set-up of ... crystallization trials. The software helps crystallographers ... automated protein crystallography: ...
The PROTEAN II slab gel casting stand is a component of the PROTEAN II XL and xi casting apparatus. It is supplied with gaskets....
Mouse monoclonal [H4B4] to LAMP2 - Lysosome Marker (Phycoerythrin) ( Abpromise for all tested applications). entrezGeneID: 3920 SwissProtID: P13473...
Biology Products: