Deuterium changes the electronic properties of organic solar cells

Conceptual drawing shows a flexible organic photovoltaic made from an acceptor of PCBM (buckyball with earth) and the donor of deuterated conducting polymer. The polymer blend in the device (bottom) will harvest the sunlight to generate electrical power. (carbon:blue; sulfur: yellow; hydrogen: white; deuterium: purple). Image: Christopher Rouleau, CNMS.

Multidisciplinary ORNL team discovers unexpected effect of heavy hydrogen in organic solar cells.

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Cu(In,Ga)Se2 outperforms multicrystalline silicon

Compositional investigation of potassium doped Cu(In,Ga)Se2 solar cells with efficiencies up to 20.8%

Cu(In,Ga)Se2 (CIGS) thin-film solar cells have now reached a high efficiency level with a new record efficiency of 20.8 %.

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Useful Uncertainty Causes Ultrafast Charge Transfer in Bulk Heterojunction Solar Cells

Solar cell installation by Konarka, Inc.

In a Review Article in the Advanced Materials 25th anniversary series, Nobel Laureate Alan J. Heeger discusses BHJ solar cell operation and how efficiencies can top 20%.

The week in research: February 5th 2014

A roundup of the latest materials science research from the past week.

Protein-based solar cell handles variable light better

Protein-based photoelectrochemical cell produces a direct current under continuous light but a novel alternating current under discontinuous illumination.

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A little on a lot versus a lot on a little – the printing revolution

freeopv

Roll-to-roll printing gives organic electronics a competitive edge.

Improving large area CVD

Standing wave trick may remedy non-uniform discharge problem in large-area VHF PECVD.

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Assessing printing technologies for polymer solar cells

Assessing printing technologies for polymer solar cells-01

Danish scientists analyze advantages and disadvantages of the most promising printing technologies for metal back electrodes used in polymer solar cells.

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Nanoparticles for improved electrical conductivity

Nano-particles for improved electrical conductivity

Scientists at the INM are exploring new routes to flexible and transparent coatings that conduct electricity particularly well.

Coating powers Nuna7 to sizzling race victory

Nuna7 wint de World Solar Challenge 2013

Coating technology developed by AkzoNobel’s Sikkens paint brand has helped power the Dutch Nuna7 solar vehicle to victory in this year’s World Solar Challenge.