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  • X-ray imaging paves way for novel solar cell production

    The sharp X-ray vision of DESY's research light source PETRA III paves the way for a new technique to produce cheap, flexible and versatile double solar cells. The method developed by scientists from the Technical University of Denmark (DTU) in Roskilde can reliably produce efficient tandem plastic more

  • Doped graphene nanoribbons with potential

    Graphene is a semiconductor when prepared as an ultra-narrow ribbon – although the material is actually a conductive material. Researchers from Empa and the Max Planck Institute for Polymer Research have now developed a new method to selectively dope graphene molecules with nitrogen atoms. By seamle more

  • Simulations for better transparent oxide layers

    Touchscreens and solar cells rely on special oxide layers. However, errors in the layers’ atomic structure impair not only their transparency, but also their conductivity. Using atomic models, Fraunhofer researchers have found ways of identifying and removing these errors. Smartphones, tablet comput more

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  • Improvement of power generation efficiency of solar cells and evaluation by fluorescence spectroscopy

    The light in the high-radiance wavelength region of the solar spectrum is not utilized effectively by silicon crystal-based solar cell modules. "Fluorescent materials" convert the ultraviolet component in the sunlight into light in the longer wavelength region where this solar cell modules can generate power. This article describes an example, how the efficiency of a fluorescent material can be evaluated, using a fluorescence spectrophotometer equipped with an integrating sphere, and a special program, which allows the determination of quantum yields of powders in a very comfortable way. more

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AstraNet Systems - Manufacturer and supplier of spectrometers, fluorimeters, spectrophotometers from

home products news applications technical profile contact distributors AstraNet Systems Ltd is a specialist supplier and manufacturer to the UK European and Worldwide spectroscopy market. AstraNet Systems Ltd is a specialist supplier of standard or custom designed spectrophotometers for laboratory, more

heliatek - organic based photovoltaics

    Deutsch Home About Us About Us The Challenges Team Current investors Partners Technology Introduction Achievements Products News/Press All items Site news only Press releases only Press Kit In the news RSS-feed Careers Contact Us Welcome   New world record efficiency for organic photovoltaics ha more

Glossary - NorSun

Search PRODUCT & CUSTOMERS INNOVATION & TECHNOLOGY PEOPLE & OPPORTUNITIES INVESTORS & FUNDING HOME  / Glossary Glossary A - Alternating current (a.c.): Electric current in which the direction of the flow is reversed at frequent intervals, 100 times per second in Europe (50 cycles per second) and 120 more

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