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The positive sides of doping - scientists boost CdTe solar cell efficiency

Flexible thin film solar cells that can be produced by roll-to-roll manufacturing are a highly promising route to cheap solar electricity. Now scientists from Empa, the Swiss Federal Laboratories for Materials Science and Technology, have made significant progress in paving the way for the industrialization of flexible, light-weight and low-cost cadmium telluride (CdTe) solar cells on metal foils. They succeeded in increasing their efficiency from below eight to 11.5 percent by doping the cells with copper.

Posted: Aug 13th, 2013

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New electron beam writer enables next-gen biomedical and information technologies

The new electron beam writer housed in the Nano3 cleanroom facility at the Qualcomm Institute is important for electrical engineering professor Shadi Dayeh's two major areas of research. He is developing next-generation, nanoscale transistors for integrated electronics; and he is developing neural probes that have the capacity to extract electrical signals from individual brain cells and transmit the information to a prosthetic device or computer.

Posted: Aug 13th, 2013

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Researchers optically levitate a glowing, nanoscale diamond (w/video)

Researchers at the University of Rochester have measured for the first time light emitted by photoluminescence from a nanodiamond levitating in free space. They describe how they used a laser to trap nanodiamonds in space, and - using another laser - caused the diamonds to emit light at given frequencies.

Posted: Aug 13th, 2013

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New twist in the graphene story

Researchers have discovered that in the making of bilayer graphene, a tiny structural twist arises that can lead to surprisingly strong changes in the material's electronic properties.

Posted: Aug 12th, 2013

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The nano-archimedes website is now online

Nano-archimedes is a Technology Computer Aided Design tool (TCAD) for the simulation of electron transport in nanometer scale semiconductor devices (nanodevices). It is based on the Wigner equation, a convenient reformulation of the Schrödinger equation in terms of a phase-space, which allows the application of stochastic particles methods and the extension towards mixed state kinetic descriptions such as the Wigner-Boltzmann equation.

Posted: Aug 10th, 2013

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New insights Into the polymer mystique for conducting charges

With its ever-escalating pursuit of high efficiency and low cost, the electronics industry prizes understanding specific behaviors of polymers. Now there's help in appreciating the polymer mystique related to the emerging field of molecular conduction in which films of charge-transporting large molecules and polymers are used within electronic devices.

Posted: Aug 9th, 2013

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