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Organic Solar Cells Unaffected by Nanostructure

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Bulk heterojunction organic solar cells that are highly organized at the nanoscale are no more efficient at creating free electrons than cells with poorly organized structures. That is the finding of a research team led by North Carolina State University, which gauged cell efficiency using ultraviolet-visible absorption spectroscopy and grazing incidence x-ray diffraction. In previous organic solar cell research, there was ambiguity about whether differences in efficiency were due to exciton dissociation or charge collection because there was no clear method for distinguishing...Read full article

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    Published: February 2015
    Glossary
    absorption spectroscopy
    Absorption spectroscopy is a fundamental analytical technique used to study the interaction between electromagnetic radiation and matter. It involves measuring the absorption of light by a sample across a range of wavelengths or frequencies. This absorption is caused by the sample's ability to absorb certain wavelengths of light, which corresponds to the excitation of electrons or molecules to higher energy levels. Principle of absorption: Absorption occurs when the energy of incident...
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    Research & TechnologyAmericasNorth CarolinaNorth Carolina State UniversityBrendan O’Connorsolarspectroscopyabsorption spectroscopyexciton dissociationnanoorganic solar cellTech Pulse

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