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Gallium arsenide based MBE-grown quantum structures for near infrared wavelength applicationsGovindaraju, Sridhar 25 April 2011 (has links)
Not available / text
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Regenerative pulsations and thermal effects in an optical bistable GaAs etalonJewell, Jack Lee January 1981 (has links)
No description available.
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Optical properties of chemical vapor deposited molybdenum thin filmsCarver, Gary Ernest January 1980 (has links)
No description available.
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PHOTOELECTRIC OBSERVATIONS OF THE ORION NEBULA AT SEVEN WAVELENGTHSReitmeyer, William Lawrence, 1923- January 1965 (has links)
No description available.
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MEASUREMENT OF ULTRAFAST RELAXATION TIMES IN SEMICONDUCTORS USING PICOSECOND PULSESSmirl, Arthur Lee, 1944- January 1975 (has links)
No description available.
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Investigations in the use of the optical trap in the regulation of optical emission characteristics in polymer systemsCrawford, Kevin D. 12 1900 (has links)
No description available.
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Structure and characterization of passivated inorganic nanocrystals and three dimensional nanocrystal arraysHarfenist, Steven A. 12 1900 (has links)
No description available.
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Novel methods for determining the optical constants of anisotropic polymer films -- new application of prism wave-guide couplingLiu, Tao January 2001 (has links)
No description available.
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Electromagnetic transmission and reflection characteristics of anisotropic multilayered structuresWeis, R. Stephen 12 1900 (has links)
No description available.
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Polymers for electro-optic applicationsLochab, Bimlesh January 2006 (has links)
Polymer based photovoltaic cells are being intensively investigated. In such cells three key processes need to occur; namely light absorption, charge separation of the exciton, and transport of the separated charges to the electrodes. Light absorption is reliant on the optical density of the polymer. In general charge separation is achieved by blending an electron acceptor with the polymer film. However, blending materials gives rise to potentially unreliable manufacturing and lifetime issues. This thesis describes the preparation of poly(l,4-phenylenevinylene) derivatives containing dipoles in which the process of charge separation can be achieved intramolecularly. The dipole was created with the use of electron donating alkoxy groups attached to the polymer backbone, and electron withdrawing nitro group attached to the fluorenyl side chains. These groups are believed to facilitate the dissociation of the photogenerated exciton, and potentially stabilise the holes and electrons that are formed when the exciton is separated. The fluorenyl side chains were attached to the polymer backbone via biphenyl or vinyl linkages. The polymers were primarily formed using the Gilch method and the conjugated polymers were obtained either via a soluble precursor route or directly from the monomer. The photophysical properties were studied for polymers with the fluorenyl side-chains as they were found to be more easily formed and stable. For poly[2-(7-nitro-9,9-dipropylfluorenyl)-5-(2'- ethylhexyloxy)-l,4-phenylenevinylene] it was found that the photoluminescence quantum yield dropped by a factor of eight relative to the polymer without the nitro group. It was further elucidated that this was due to the exciton being separated. Solar cells containing the polymers from this study showed modest performance.
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