Latest Polymer solar cell Stories

Solar Cells
2014-09-22 03:00:56

Emily Conover, University of Chicago New light has been shed on solar power generation using devices made with polymers, thanks to collaboration between scientists in the University of Chicago’s chemistry department, the Institute for Molecular Engineering and Argonne National Laboratory. Researchers identified a new polymer—a type of large molecule that forms plastics and other familiar materials—that improved the efficiency of solar cells. The group also determined the method by...

Solar Cell Degradation Seen Directly For The First Time
2013-12-09 16:02:32

DESY X-ray Examination Shows Structural Changes In "Plastics" Solar Cells With the help of DESY’s X-ray light source PETRA III, researchers of Technische Universität München have, for the first time, watched organic solar cells degrade in real time. This work could open new approaches to increasing the stability of this highly promising type of solar cell. The team headed by Prof. Peter Müller-Buschbaum from the Technische Universität München (Technical University of Munich)...

2013-08-08 14:05:03

Organic solar cells that convert light to electricity using carbon-based molecules have shown promise as a versatile energy source but have not been able to match the efficiency of their silicon-based counterparts. Now, researchers have discovered a synthetic, high-performance polymer that behaves differently from other tested materials and could make inexpensive, highly efficient organic solar panels a reality. The polymer, created at the University of Washington and tested at the...

2013-04-18 23:40:26

Throughout decades of research on solar cells, one formula has been considered an absolute limit to the efficiency of such devices in converting sunlight into electricity: Called the Shockley-Queisser efficiency limit, it posits that the ultimate conversion efficiency can never exceed 34 percent for a single optimized semiconductor junction. Now, researchers at MIT have shown that there is a way to blow past that limit as easily as today's jet fighters zoom through the sound barrier...

2013-01-28 11:54:59

Geometric pattern maximizes time light is trapped in solar cell 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...

Berkeley Lab's Advanced Light Source Uncovers New Path To More Efficient Organic Solar Cells
2013-01-07 12:42:39

DOE/Lawrence Berkeley National Laboratory Why are efficient and affordable solar cells so highly coveted? Volume. The amount of solar energy lighting up Earth's land mass every year is nearly 3,000 times the total amount of annual human energy use. But to compete with energy from fossil fuels, photovoltaic devices must convert sunlight to electricity with a certain measure of efficiency. For polymer-based organic photovoltaic cells, which are far less expensive to manufacture than...

How Solvent Mixtures Affect Organic Solar Cell Structure Revealed
2012-10-04 15:54:25

Controlling “mixing” between acceptor and donor layers, or solar cell domains, in polymer-based solar cells could increase their efficiency, according to a team of researchers that included physicists from North Carolina State University. Their findings shed light on the inner workings of these solar cells, and could lead to further improvements in efficiency. Polymer-based solar cells consist of two domains, known as the acceptor and the donor layers. Excitons, the energy...

Solar Cells Could Produce Energy-Generating Windows
2012-07-22 06:34:05

redOrbit Staff & Wire Reports - Your Universe Online Researchers from a prominent California university have developed a new transparent solar cell that they say could be used to create windows which generate electricity. Writing in the journal ACS Nano, UCLA Materials Science and Engineering Professor Yang Yang and colleagues describe a polymer solar cell (PSC) which is capable of producing energy by absorbing primarily infrared light, not visible light. As such, this allows the...

Organic Solar Cells One Step Closer To Success
2012-06-15 13:24:53

Brett Smith for redOrbit.com Organic solar cells have long been a promising alternative to conventional solar cells, but their low efficiency, low stability, and low strength have kept them from widespread commercial use. Senior chemist Lin Chen of the U.S. Department of Energy´s (DOE) Argonne National Laboratory hopes to change that by focusing on a key component of the cells, the exciton. According to Chen, excitons are considered a sort of “quasiparticle,” because...

2012-02-13 23:22:02

In the effort to convert sunlight into electricity, photovoltaic solar cells that use conductive organic polymers for light absorption and conversion have shown great potential. Organic polymers can be produced in high volumes at low cost, resulting in photovoltaic devices that are cheap, lightweight and flexible. In the last few years, much work has been done to improve the efficiency with which these devices convert sunlight into power, including the development of new materials, device...

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