Navigation Links
Cobalt replacements make solar cells more sustainable
Date:8/2/2013

Researchers at the University of Basel have successfully replaced the rare element iodine in copper-based dye-sensitized solar cells by the more abundant element cobalt, taking a step forward in the development of environmentally friendly energy production. The journal Chemical Communications has published the results of these so-called Cu-Co cells.

Dye-sensitized solar cells (DSCs) transform light to electricity. They consist of a semiconductor on which a dye is anchored. This colored complex absorbs light and through an electron transfer process produces electrical current. Electrolytes act as electron transport agents inside the DSCs.

Usually, iodine and iodide serve as an electrolyte. Chemists at the University of Basel have now been able to successfully replace the usual iodine-based electron transport system in copper-based DSCs by a cobalt compound. Tests showed no loss in performance.

The replacement of iodine significantly increases the sustainability of solar cells: Iodine is a rare element, only present at a level of 450 parts per billion in the Earth, whereas cobalt is 50 times more abundant, explains the Project Officer Dr. Biljana Bozic-Weber. Furthermore, this replacement also removes one of the long-term degradation processes in which copper compounds react with the electrolyte to form copper iodide and thus improves the long-term stability of DSCs.

The research group around the Basel chemistry professors Ed Constable and Catherine Housecroft is currently working on optimizing the performance of DSCs based on copper complexes. They had previously shown in 2012 that the very rare element ruthenium in solar cells could be replaced by copper derivatives.

This is the first report of DSCs, which combine copper-based dyes and cobalt electrolytes and thus represents a critical step towards the development of stable iodide-free copper solar cells. However, many aspects relating to the efficiency need t
'/>"/>

Contact: Reto Caluori
reto.caluori@unibas.ch
41-612-672-495
University of Basel
Source:Eurekalert

Page: 1 2

Related biology news :

1. Champion nano-rust for producing solar hydrogen
2. Organic electronics: Imaging defects in solar cells
3. Solar-powered nanofilters pump in antibiotics to clean contaminated water
4. NREL launches initiative to build solar performance database
5. NREL assembles industry working group to advance solar securitization
6. Searching for the solar systems chemical recipe
7. Solar power: Is it time for the big push?
8. Black silicon can take efficiency of solar cells to new levels
9. NJIT and Chinese Tech Institute join forces for 2013 Solar Decathlon in China
10. Using snail teeth to improve solar cells and batteries
11. NREL updates solar radiation database
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/15/2014)... fears that reef biodiversity may not provide the level ... , In an international study published today, Professor David ... Reef Studies (Coral CoE) says we need to identify ... , In coral reefs, just as in any modern-day ... safe and functioning. , Professor Bellwood says, in ...
(Date:9/15/2014)... vision document, released today by the National Academy ... goals, objectives, and strategies for the program and ... next five years (2015-2020). In addition, the ... be funded in 2015, will include exploratory grants, ... , The $500 million, 30-year program to be ...
(Date:9/15/2014)... Conditions on Earth for the first 500 million years ... the present day, complete with oceans, continents and active ... geologic eon, called the Hadean, has gained substantial new ... that formed more than 4 billion years ago with ... as a possible geological analog for early Earth. , ...
Breaking Biology News(10 mins):Specialized species critical for reefs 2NAS Gulf Research Program announces strategic vision, initial opportunities 2NAS Gulf Research Program announces strategic vision, initial opportunities 3NAS Gulf Research Program announces strategic vision, initial opportunities 4Early Earth less hellish than previously thought 2Early Earth less hellish than previously thought 3
... and Matthew Champion from the University of Notre Dame,s ... to directly detect bacterial protein secretion, which could provide ... The Champions point out that bacteria ... beyond their cell membrane in order to interact with ...
... by several orders of magnitude. The molecular mechanism by which ... and thus slows cell growth is described by biophysicists at ... the Online Early Edition of the journal PNAS . ... showed that Ras puts a phosphate chain under tension to ...
... MA A new article published today in ... evidence to suggest the current obesity epidemic in the ... high fructose corn syrup (HFCS). The commentary concludes ... research, there is overwhelming evidence showing HFCS is nutritionally ...
Cached Biology News:Notre Dame research could provide new insights into tuberculosis and other diseases 2RUB researchers clarify catalysis mechanism of cell growth protein Ras 2RUB researchers clarify catalysis mechanism of cell growth protein Ras 3Scientists conclude high fructose corn syrup should not be blamed for obesity 2
(Date:9/15/2014)... 15, 2014 EnGeneIC, Ltd. , ... treatment of cancer through the targeted delivery of ... together with the Asbestos Disease Research Institute (ADRI), ... South Wales (NSW) Premier,s Award for Excellence in ... the hospitals that will be involved in the ...
(Date:9/15/2014)... researchers led by Northeastern University has developed a ... and a variety of nanocarbon structures in carbon ... scalable, which will allow the researchers to tailor ... in applications ranging from electronic devices to CNT-reinforced ... sports equipment. , Their findings were published in ...
(Date:9/15/2014)... , Sept. 15, 2014 The chemistry, taste, ... climate, says a new article published by the nonprofit American ... PhD, on climate change and its effects on the phytochemical ... an extensive study conducted by Dr. Ahmed in the ... and has implications for the future of medicinal ...
(Date:9/15/2014)... 2014  The second annual International Plasma Awareness ... joint initiative of the Plasma Protein Therapeutics Association ... is designed to: , Raise global awareness ... of plasma donors in saving and improving lives ... rare diseases Member companies are planning ...
Breaking Biology Technology:EnGeneIC Named a Recipient of the Cancer Institute NSW Premier's Award for Excellence in Translational Cancer Research 2EnGeneIC Named a Recipient of the Cancer Institute NSW Premier's Award for Excellence in Translational Cancer Research 3Northeastern University Researchers Develop Novel Method for Working with Nanotubes 2Tea Taste and Quality Affected by Climate Change 2Tea Taste and Quality Affected by Climate Change 3Tea Taste and Quality Affected by Climate Change 4International Plasma Awareness Week To Celebrate Donors And Spotlight Rare Diseases 2International Plasma Awareness Week To Celebrate Donors And Spotlight Rare Diseases 3
... June 1, 2011 VWR International, LLC, a ... announced today that it acquired the business of ... Founded in 1985, BioExpress is a well-respected ... segments, and offers over 200 well-known, multi-national brands, ...
... ( www.investoruprising.com ) has released "A Guide to Biotech ... Exchange Traded Funds (ETFs) and mutual funds, which is ... (Logo: http://photos.prnewswire.com/prnh/20110411/NY80781LOGO-a) "A Guide to ... the leading biotech mutual funds and ETFs. It explains ...
... Waters Corporation (NYSE: WAT ) ... System, the highest performing UPLC® system ever engineered ... level.  For scientists challenged by the most difficult ... system dispersion and lowest carryover in the industry ...
Cached Biology Technology:VWR International, LLC Acquires BioExpress Corp. 2Investor Uprising Publishes Free Biotech Investment Report 2Investor Uprising Publishes Free Biotech Investment Report 3Waters Introduces Highest Performing UPLC Ever Engineered - the New ACQUITY UPLC I-Class 2Waters Introduces Highest Performing UPLC Ever Engineered - the New ACQUITY UPLC I-Class 3Waters Introduces Highest Performing UPLC Ever Engineered - the New ACQUITY UPLC I-Class 4
For demonstration of Helicobacter pylori...
... efficient interfacing with mass spectrometry. Improved ... demands for benefits like these have ... routine applications. Standard HPLC systems, however, ... to operate with smaller bore columns ...
... The MitoPT kit is used in conjunction with ... culture and induce apoptosis according to your existing ... as a negative control). Once you have induced ... solution to each population and incubate the cells ...
Kit Components: Anti-Acetylated Histone H3 Salmon Sperm DNA/Protein A Agarose All necessary buffers. ...
Biology Products: