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Microscopy Uncovers Potential Improvement to Solar Cell Efficiency

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Advanced microscopy techniques have been used to show that adding the optimum amount of selenium (Se) may help increase efficiency in cadium (Cd)- and tellurium (Te)-based solar cells from the current approximate 22 percent to levels approaching the theoretical limit of 30 to 33 percent. To study the effect of Se content on the photoactive properties of bandgap-graded CdTe cells, researchers at Oak Ridge National Laboratory (ORNL) used a combination of techniques including atom probe tomography, transmission electron microscopy and electron beam-induced current. The entire...Read full article

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    Published: August 2016
    Glossary
    tomography
    Technique that defocuses activity from surrounding planes by means of the relative motions at the point of interest.
    Research & TechnologyAmericasMicroscopysolarsolar cellsOak Ridge National LaboratoryORNLtomographyTech Pulse

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