An Organic Sensitizer with a Fused Dithienothiophene Unit for Efficient and Stable Dye Sensitized Solar Cells: related news

An Organic Sensitizer with a Fused Dithienothiophene Unit for Efficient and Stable Dye-Sensitized Solar Cells

State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences (CAS), Changchun 130022, China, Key Laboratory of Superlight Materials and Surface Technology, Harbin Engineering University, Harbin 150001, China, and Laboratory for Photonics and Interfaces, Swiss Federal Institute of Technology, CH 1015, Lausanne, Switzerland

Solar energy turns organic

(Nanowerk News) Cheap and efficient conversion of solar energy into electricity could help combat global warming and the shortage of fossil fuels. However, the high production cost of electricity from silicon-based solar cells has limited the use of the technology. Low cost solar cells with high cell performance are highly desirable and organic solar cells could be the answer. They are easy to make from inexpensive organic materials and, unlike inorganic solar cells, are lightweight, flexible and colourful.

New Efficiency Benchmark For Dye-sensitized Solar Cells

Scientists have achieved a record light conversion efficiency of 8.2% in solvent-free dye-sensitized solar cells. This breakthrough in efficiency without the use of volatile organic solvents will make it possible to pursue large scale, outdoor practical application of lightweight, inexpensive, flexible dye-sensitized solar films that are stable over long periods of light and heat exposure.

New efficiency benchmark for dye-sensitized solar cells

In a paper published online June 29 in the journal Nature Materials, EPFL professor Michael Graetzel, Shaik Zakeeruddin and colleagues from the Changchun Institute of Applied Chemistry at the Chinese Academy of Sciences have achieved a record light conversion efficiency of 8.2% in solvent-free dye-sensitized solar cells. This breakthrough in efficiency without the use of volatile organic solvents will make it possible to pursue large scale, outdoor practical application of lightweight, inexpensive, flexible dye-sensitized solar films that are stable over long periods of light and heat exposure, according to Eurekalert, the news service of the American Association for the Advancement of Science.

New efficiency benchmark for dye-sensitized solar cells

(Nanowerk News) In a paper published online June 29 in the journal Nature Materials, EPFL professor Michael Grätzel, Shaik Zakeeruddin and colleagues from the Changchun Institute of Applied Chemistry at the Chinese Academy of Sciences have achieved a record light conversion efficiency of 8.2% in solvent-free dye-sensitized solar cells. This breakthrough in efficiency without the use of volatile organic solvents will make it possible to pursue large scale, outdoor practical application of lightweight, inexpensive, flexible dye-sensitized solar films that are stable over long periods of light and heat exposure.

Nanocantilevers image nanoparticles in cells

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Breakthrough in efficiency for dye-sensitized solar cells

In a paper published in the journal Nature Materials, EPFL professor Michael Graetzel, Shaik Zakeeruddin and colleagues from the Changchun Institute of Applied Chemistry at the Chinese Academy of Sciences have achieved a record light conversion efficiency of 8.2% in solvent-free dye-sensitized solar cells.

High-Efficiency, Flexible, High-Stability Solar Cells

Nanotechnology-based hybrid nanocrystal inorganic thinfilm photovoltaics combine the best features of solar cells constructed from bulk thin-film silicon and from polymer solar cells. The colloidal nanocrystal (NC) cell technology offered here allows the production of air-stable solar cells processed using solution phase methods. The technology simplifies fabrication under ambient conditions, thus expanding the range of flexible or conformal substrates that can be used.

High-Efficiency, Flexible, High-Stability Solar Cells

Nanotechnology-based hybrid nanocrystal inorganic thinfilm photovoltaics combine the best features of solar cells constructed from bulk thin-film silicon and from polymer solar cells. The colloidal nanocrystal (NC) cell technology offered here allows the production of air-stable solar cells processed using solution phase methods. The technology simplifies fabrication under ambient conditions, thus expanding the range of flexible or conformal substrates that can be used.

Enhance the Optical Absorptivity of Nanocrystalline TiO2 Film with High Molar Extinction Coefficient Ruthenium Sensitizers for High Performance Dye-Sensitized Solar Cells

Film with High Molar Extinction Coefficient Ruthenium Sensitizers for High Performance Dye-Sensitized Solar Cells

Researchers Produce Best-Yet Dye-Based Solar Cells

In work that may help solar panels become a more viable source of mainstream power, a research group has created a dye-based solar cell with a high efficiency and high stability, and that lacks the volatile chemicals used in similar cells. This is a combination so far lacking in the newest solar-cell prototypes.

Researchers Improve Solar Cell Performance

Vegematic writes "Researchers at MIT have improved solar collectors using dyes. They just increased their performance results by a factor of 4. These paint-on materials can increase the power obtained from existing solar cells by a factor of over 40 without needing to track the sun. 'By collecting light over their full surface and concentrating it at their edges, these devices reduce the required area of solar cells and consequently, the cost of solar power. Stacking multiple concentrators allows the optimization of solar cells at each wavelength, increasing the overall power output.' There is also a shorter FAQ available."

NexTechFAS and Abbie Gregg, Inc. Collaborate in the Development of Innovative Solar Technologies

NexTech Solutions, Inc. (PINKSHEETS: NXSL) and FAS Holdings Group, LLC, jointly doing business as "NexTechFAS," are pleased to announce they are collaborating with Abbie Gregg, Inc. (AGI) in several engineering and technology innovations which are being utilized in the manufacturing of early stage organic photovoltaic (solar) and touch screen displays. These technology collaborations have resulted in significant orders by a leading developer of organic solar cells and RPO, a leading manufacturer of waveguide technology for touch screen displays. NexTechFAS' automated optical inspection and extrusion coating technologies, used in the development of organic solar cells, will be available for demonstration at the 2008 SEMICON West Conference, July 15 - 17, 2008.

Leaf and flower shaped organic solar cells

Japan’s Advanced Industrial Science and Technology (AIST) has developed leaf and flower shaped organic solar cells. An AIST employee displays a prototype model at a solar power exhibition.

Nanowires make bendy solar cells

Highly bendable "dye-sensitized" solar cells made from zinc oxide nanowire photoelectrodes on plastic substrates have been developed by researchers in Singapore. The devices, which conserve their photovoltaic properties even when greatly bent, could find use in a variety of flexible and portable applications, such as solar-cell mobile phone chargers, clothes and umbrellas.

Solar Cells - Made In a Pizza Oven

stylemessiah writes "The winner of several Eureka Science Awards in Australia is a crafty chick who devised a way to create solar cells cheaply using a pizza oven, nail polish and an inkjet printer. This was developed to address the high cost of cells and in particular for the world's poorest regions. She wanted to give the ~2 billion people around the world who don't have electricity the gift of light and cheap energy. This could have profound (and a good profound) implications for education and health in those in the poorest regions in the world. And it all started with her parents giving her a solar energy kit when she was 10 ..."

Two Efficient XML Interchange (EXI) Drafts Published: Format 1.0; Evaluation

The Efficient XML Interchange Working Group published two Working Drafts today: Efficient XML Interchange (EXI) Format 1.0 and Efficient XML Interchange Evaluation. The former specifies the Efficient XML Interchange (EXI) format. EXI is a very compact representation for the Extensible Markup Language (XML) Information Set that is intended to simultaneously optimize performance and the utilization of computational resources. The EXI format uses a hybrid approach drawn from the information and formal language theories, plus practical techniques verified by measurements, for entropy encoding XML information. Using a relatively simple algorithm, which is amenable to fast and compact implementation, and a small set of data types, it reliably produces efficient encodings of XML event streams.

First Solar (FSLR): Encourage profit taking/shorting here - FBR

FBR is out with a negative call on First Solar (NASDAQ: FSLR) and SunPower (NASDAQ: SPWR) after Solar Electric Power Association (SEPA), an industry association bridging the solar and utility industries, announced yesterday theresults of its survey of utility companies (titled:"Utility Solar Electricity Market Survey"). Summary: (a) projected PV installations of ~2 GW, on aggregate, over the next three to five years in solar portfolio, versus >3 GW for CSPs across the U.S. utilities; (b) possible paradigm shift, with utilities owning the plants and PV suppliers becoming only turn-key provider (if ITC is given to utilities instead of third parties).

Our Solar System: An Island of Calm in a Violent Universe (and it's special, too)

We humans like to think we're special, but astronomically speaking we've been shot down quite severely and humbly put in our place. We're not at the center of our solar system, nowhere near the center of our galaxy and certainly not at the center of the universe. But now comes great news for the human psyche from scientists trying to explain solar system formation. As far as solar systems go, we have thought ours was just average and that all solar systems were like ours. But in looking at the 300 plus extrasolar planets that have been discovered and the systems they are in, none so far are anything like our home solar system. In fact, say scientists at Northwestern University, we may be special after all. In a study using computer simulations (this is the week for computer simulations, see here and here), researchers ran more than a hund

Scientists Use Virus To Reprogram Adult Cells In Mice

n2hightech writes "Harvard University scientists figured out how to activate a trio of dormant genes that commanded non-insulin producing pancreas cells to switch to the Beta type insulin producing cells. The method uses an engineered virus to infect the cells and deliver special proteins that activate the dormant genes. This technology has the potential to make all stem cell based methods obsolete because it does not pose the risk of rejection and cancer associated with stem cells. A simple injection into the area where cells need to be reprogrammed is all that is required." Gospodin adds a link to coverage at the Washington Post.

Thin-film solar cells heading for $1 per Wp

Thin-film solar cells are cheaper than traditional solar panels, such as those made of polycrystalline silicon, but the yield is lower. However, the combination of these properties is promising according to the Thin-Film Future conference organized recently by SolarPlaza in Munich. An impression of the heavily attended gathering.

LDK Solar gets 440 MW solar wafer contract

Chinese solar product maker LDK Solar Co. Ltd. said Friday it will supply about 440 megawatts of solar wafers to South Korea's Hyundai Heavy Industries Co. Ltd., the world's largest shipbuilder.

New solar concentrators could replace solar panels

BEIJING, July 11 (Xinhuanet) -- A new compact method utilizing solar concentrators to generate electricity could make solar panels that contain expensive photovoltaic cells that convert sunlight into electricity a thing of the past.

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