Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Low-Priced Plastic Photovoltaics

23.10.2013
Article in "The Journal of Chemical Physics" Describes New Approach to Making Cheaper, More Efficient Solar Panels

Photovoltaic devices, which tap the power of the sun and convert it to electricity, offer a green -- and potentially unlimited -- alternative to fossil fuel use. So why haven’t solar technologies been more widely adopted?


Imperial College/S. Wood & J. Bailey

The polymer blend morphology without (left) and with (right) nanowires.

Quite simply, "they’re too expensive," says Ji-Seon Kim, a senior lecturer in experimental solid-state physics at Imperial College London, who, along with her colleagues, has come up with a technology that might help bring the prices down.

The scientists describe their new approach to making cheaper, more efficient solar panels in a paper in The Journal of Chemical Physics, produced by AIP Publishing.

"To collect a lot of sunlight you need to cover a large area in solar panels, which is very expensive for traditional inorganic -- usually silicon -- photovoltaics," explains Kim. The high costs arise because traditional panels must be made from high purity crystals that require high temperatures and vacuum conditions to manufacture.

A cheaper solution is to construct the photovoltaic devices out of organic compounds—building what are essentially plastic solar cells. Organic semiconducting materials, and especially polymers, can be dissolved to make an ink and then simply "printed" in a very thin layer, some 100 billionths of a meter thick, over a large area. "Covering a large area in plastic is much cheaper than covering it in silicon, and as a result the cost per Watt of electricity-generating capacity has the potential to be much lower," she says.

One major difficulty with doing this, however, is controlling the arrangement of polymer molecules within the thin layer. In their paper, Kim and colleagues describe a new method for exerting such control. "We have developed an advanced structural probe technique to determine the molecular packing of two different polymers when they are mixed together," she says. By manipulating how the molecules of the two different polymers pack together, Kim and her colleagues created ordered pathways -- or "nanowires" -- along which electrical charges can more easily travel. This enables the solar cell to produce more electrical current, she said.

"Our work highlights the importance of the precise arrangement of polymer molecules in a polymer solar cell for it to work efficiently," says Kim, who expects polymer solar cells to reach the commercial market within 5 to 10 years.

The article, "Understanding the Relationship between Molecular Order and Charge Transport Properties in Conjugated Polymer Based Organic Blend Photovoltaic Devices" by Sebastian Wood, Jong Soo Kim, David T. James, Wing C. Tsoi, Craig E. Murphy and Ji-Seon Kim appears in The Journal of Chemical Physics. See: http://dx.doi.org/10.1063/1.4816706

The authors of this manuscript are affiliated with Imperial College London, National Physical Laboratory in the United Kingdom, KAIST in the Republic of Korea.

ABOUT THE JOURNAL
The Journal of Chemical Physics publishes concise and definitive reports of significant research in the methods and applications of chemical physics. See: http://jcp.aip.org

Jason Socrates Bardi | Newswise
Further information:
http://www.aip.org

More articles from Materials Sciences:

nachricht Scientist invents way to trigger artificial photosynthesis to clean air
26.04.2017 | University of Central Florida

nachricht Researchers invent process to make sustainable rubber, plastics
25.04.2017 | University of Delaware

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Making lightweight construction suitable for series production

More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.

Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...

Im Focus: Wonder material? Novel nanotube structure strengthens thin films for flexible electronics

Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.

"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...

Im Focus: Deep inside Galaxy M87

The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.

Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...

Im Focus: A Quantum Low Pass for Photons

Physicists in Garching observe novel quantum effect that limits the number of emitted photons.

The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...

Im Focus: Microprocessors based on a layer of just three atoms

Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.

Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Expert meeting “Health Business Connect” will connect international medical technology companies

20.04.2017 | Event News

Wenn der Computer das Gehirn austrickst

18.04.2017 | Event News

7th International Conference on Crystalline Silicon Photovoltaics in Freiburg on April 3-5, 2017

03.04.2017 | Event News

 
Latest News

Scientist invents way to trigger artificial photosynthesis to clean air

26.04.2017 | Materials Sciences

Ammonium nitrogen input increases the synthesis of anticarcinogenic compounds in broccoli

26.04.2017 | Agricultural and Forestry Science

SwRI-led team discovers lull in Mars' giant impact history

26.04.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>