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First Optoelectronic 3-D Photonic Crystal Developed

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CHAMPAIGN, Ill., July 25, 2011 — Using an epitaxial approach, the first optoelectronically active 3-D photonic crystal has been demonstrated — an advance that could open new avenues for solar cells, lasers, LEDs, metamaterials and more. "We've discovered a way to change the three-dimensional structure of a well-established semiconductor material to enable new optical properties, while maintaining its very attractive electrical properties," said research leader Paul Braun, a professor of materials science and engineering and of chemistry at the University of Illinois. This graphic shows the method for...Read full article

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    Published: July 2011
    Glossary
    epitaxy
    A well controlled thin films technique for growing films with good crystal structure in ultra high vacuum environments at very low deposition rates. Epitaxy methods are well known for the growing of single crystals in which chemical reactions produce thin layers of materials whose lattice structures are identical to that of the substrate on which they are deposited. Some examples are molecular beam epitaxy, liquid phase epitaxy and vapor phase epitaxy. Molecular beam epitaxy is also commonly...
    3-D photonic crystal LEDAmericasBasic ScienceBeckman Institute for Advanced Science and TechnologyenergyepitaxyFrederick Seitz Materials Research LaboratoryGaAsgallium arsenidegreen photonicsLight Sourceslow-threshold lasersmanipulate lightmetamaterialsoptically activeOpticsoptoelectronic 3-D photonic crystalPaul BraunResearch & Technologysingle-crystal semiconductorssolar cellsUniversity of IllinoisLasersLEDs

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