Navigation Links
Stanford study could lead to paradigm shift in organic solar cell research
Date:11/19/2013

Organic solar cells have long been touted as lightweight, low-cost alternatives to rigid solar panels made of silicon. Dramatic improvements in the efficiency of organic photovoltaics have been made in recent years, yet the fundamental question of how these devices convert sunlight into electricity is still hotly debated.

Now a Stanford University research team is weighing in on the controversy. Their findings, published in the Nov. 17 issue of the journal Nature Materials, indicate that the predominant working theory is incorrect, and could steer future efforts to design materials that boost the performance of organic cells.

"We know that organic photovoltaics are very good," said study coauthor Michael McGehee, a professor of materials science and engineering at Stanford. "The question is, why are they so good? The answer is controversial."

A typical organic solar cell consists of two semiconducting layers made of plastic polymers and other flexible materials. The cell generates electricity by absorbing particles of light, or photons.

When the cell absorbs light, a photon knocks out an electron in a polymer atom, leaving behind an empty space, which scientists refer to as a hole. The electron and the hole immediately form a bonded pair called an exciton. The exciton splits, allowing the electron to move independently to a hole created by another absorbed photon. This continuous movement of electrons from hole to hole produces an electric current.

In the study, the Stanford team addressed a long-standing debate over what causes the exciton to split.

"To generate a current, you have to separate the electron and the hole," said senior author Alberto Salleo, an associate professor of materials science and engineering at Stanford. "That requires two different semiconducting materials. If the electron is attracted to material B more than material A, it drops into material B. In theory, the electron sh
'/>"/>

Contact: Mark Shwartz
mshwartz@stanford.edu
650-723-9296
Stanford University
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Stanford engineers use nanophotonics to reshape on-chip computer data transmission
2. Stanford engineers weld nanowires with light
3. Unzipped carbon nanotubes could help energize fuel cells and batteries, Stanford scientists say
4. Stanford engineers perfecting carbon nanotubes for highly energy-efficient computing
5. Stanford scientists spark new interest in the century-old Edison battery
6. Stanford faculty awarded $2.2 million for innovative energy research
7. Taming mavericks: Stanford researchers use synthetic magnetism to control light
8. NREL and Stanford team up on peel-and-stick solar cells
9. Stanford scientists create a low-cost, long-lasting water splitter made of silicon and nickel
10. Positive Clinical Study Results for BSPs HyperQ Technology
11. 15-Minute Data From Phase 3 Study of Avanafil Featured as a Late Breaking Abstract at SMSNA Annual Meeting
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Stanford study could lead to paradigm shift in organic solar cell research
(Date:11/26/2014)... PMG Research, Inc. announced today the formation ... of sites that provide clinical research services to pharmaceutical companies ... through its partnerships with large physician practices and integrated health ... in the Southeastern United States and spans over 60 physician ... will be held by: Dr. Robert Holmes, MD, of ...
(Date:11/26/2014)... The Pittcon marketing department is pleased to announce ... app, Pittcon 2015 . The ... for iOS and Android devices and the Kindle Fire, ... after the event. It acts as an all-inclusive real-time ... Conferee Networking sessions and short courses. , The Pittcon ...
(Date:11/26/2014)... 2014 2014 Deep Research Report ... research report on the Global Palmitic Acid industry. ... Acid, basic information, including definition, classification, application, industry ... analysis, etc. , For international and China ... market in China and other countries or ...
(Date:11/24/2014)... 2014  IGI Laboratories, Inc. (NYSE MKT: IG), a ... pharmaceutical company, today announced it has submitted an additional ... and Drug Administration (FDA), which brings the Company,s total ... eighteen submissions now pending at the FDA. ... the Company, commented, "Our team here at IGI has ...
Breaking Biology Technology:PMG Research Names Medical Advisory Board 2PMG Research Names Medical Advisory Board 3Pittcon Releases 2015 Mobile App 2Palmitic Acid Industry Global 2014 Analysis & 2020 Forecasts on Market data, Statics, Development Now at ReportsnReports.com 2Palmitic Acid Industry Global 2014 Analysis & 2020 Forecasts on Market data, Statics, Development Now at ReportsnReports.com 3IGI Laboratories, Inc. Announces ANDA Submission 2
... team of scientists at Rutgers University has found a material ... properties of the material. If the magnetoelectric effect discovered ... it could be useful for manipulating small-scale magnetic bits in ... issue of Physical Review Letters . The researchers ...
... a global leader in material science and high-performance polymer ... 6 languages: English, Chinese, French, German, Japanese, and Spanish. ... Account Managers and modified customer support hours to better ... for download at http://www.zeusinc.com . ...
... 23, 2010 ... if (typeof(lpUnit)==,undefined,) var ... var shortURL = ""; BitlyCB.alertResponse = function(data) ... grab the first one. for (var r in data.results) { first_result = data.results[r]; break; } for (var ...
Cached Biology Technology:Zeus Catalog Available in Six Languages 2Torbjorn Bjerke Appointed as new CEO for Karolinska Development 2Torbjorn Bjerke Appointed as new CEO for Karolinska Development 3Torbjorn Bjerke Appointed as new CEO for Karolinska Development 4Torbjorn Bjerke Appointed as new CEO for Karolinska Development 5Torbjorn Bjerke Appointed as new CEO for Karolinska Development 6
(Date:11/6/2014)... November 6, 2014 - Insilico Medicine, Inc, a ... and age related diseases announced a research collaboration ... cancer, Champions Oncology, Inc (OTC: CSBR). , "There ... personalized medicine, but Champions Oncology,s TumorGraft technology is ... the chemotherapy regimen experimentally generating vast amounts of ...
(Date:11/4/2014)... of Utah engineers developed the first room-temperature fuel cell ... without needing to ignite the fuel. These new fuel ... power and sensors. , A study of the new ... journal ACS Catalysis . , Fuel cells convert ... fuel and an oxygen-rich source such as air. If ...
(Date:11/4/2014)... research study examining only marketing directed at children ... restaurants has found that the majority of black, ... such marketing tactics. , Authored by Arizona State ... study is the first to examine the use ... of fast food restaurants and its relationship to ...
Breaking Biology News(10 mins):Insilico Medicine, Inc announces research collaboration with Champions Oncology, Inc 2Jet-fueled electricity at room temperature 2Fast food marketing for children disproportionately affects certain communities 2Fast food marketing for children disproportionately affects certain communities 3
... impact the world,s squid species, according to a new ... and soon to be published in the journal ... commercially important, that impact may have far-reaching effects on ... "Squid are at the center of the ocean ...
... the mantle of summer pest, cicadas are perhaps the most curious. ... head, they taste good in chocolate, but as the drowning din ... them less if they emerged more often. Cicadas are unique ... So why would anyone actually want to replicate theses sounds? ...
... Laboratory of Molecular Biology in the United Kingdom have determined ... that when mutated can lead to a hereditary form of ... EMBO Journal , define the position of many of the ... alterations may affect the stability and function of the protein. ...
Cached Biology News:Acidifying oceans could spell trouble for squid 2Acidifying oceans could spell trouble for squid 3Secrets of the cicada's sound 2Secrets of the cicada's sound 3How disease mutations affect the Parkin protein 2
Human Serum FDA Licensed US Donor Centers Sterile / Non-sterile: Sterile Filtered to 0.2 micron Information: Extensive Viral Testing ...
Normal human serum collected off the clot from healthy normal humans. Each donor unit is negative for anti-HIV 1&2, HIV-Ag, HCV, and HBsAg by FDA required tests...
One-step, colorimetric, linear detection range 0.7 mg/dL to 300 mg/dL. Procedure: 10 min....
XBP1 Antibody...
Biology Products: