Person:
Summers,
Christopher J.
Summers,
Christopher J.
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ItemExpitaxial growth of Ga-N based LEDs on simple sacrificial substrates(Georgia Institute of Technology, 12/31/2009) Ferguson, Ian T. ; Summers, Christopher J.
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ItemEpitaxial growth of GaN-based LEDs on simple sacrificial substrates(Georgia Institute of Technology, 2009-12-21) Ferguson, Ian T. ; Summers, Christopher J.
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ItemREU site: structure-property correlations across nano-, micro-, and macro length scales in advanced materials(Georgia Institute of Technology, 2009-03-24) Thadhani, Naresh N. ; Summers, Christopher J. ; Gokhale, Arun M. ; Milam, Valeria T.
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ItemInnovative development of next generation and energy efficient solid state light sources for general illumination(Georgia Institute of Technology, 2006-11-30) Ferguson, Ian T. ; Summers, Christopher J.
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ItemSelf-attraction among aligned Au/ZnO nanorods under electron beam(Georgia Institute of Technology, 2004-12-28) Wang, Xudong ; Summers, Christopher J. ; Wang, Z. L. (Zhong Lin)Self-attraction among vertical aligned Au/ZnO nanorods under the illumination of an electron beam has been observed. This phenomenon is attributed to the interaction between the accumulation charges near the metal-semiconductor junctions for two nanorods of different length. A model calculation is presented to explain the observed phenomenon.
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ItemSynthesis and properties of Sr₂CeO₄ blue emission powder phosphor for field emission displays(Georgia Institute of Technology, 1999-03-22) Jiang, Yongdong ; Zhang, Fuli ; Summers, Christopher J. ; Wang, Z. L. (Zhong Lin)A blue emission powder phosphor Sr₂CeO₄ for field emission displays was prepared using a chemical coprecipitation technique, which is most suitable for large-scale production. The powders were fired at different temperatures to optimize the properties. Firing the powder at 1200 °C for 2 h gave the highest luminescence efficiency of 5.4 lm/W at 4 kV and 29.0 lm/W at 10 kV. The emission peak of this phosphor is at ~ 470 nm and Commission International de l'Eclairage coordinates are x = 0.19, y = 0.26.
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ItemSynthesis and characterization of Y₂O₃: Eu³⁺ powder phosphor by a hydrolysis technique(Georgia Institute of Technology, 1998-10) Jiang, Yongdong ; Wang, Z. L. (Zhong Lin) ; Zhang, Fuli ; Paris, Henry G. ; Summers, Christopher J.A forced hydrolysis technique is used for preparing Y₂O₃: Eu³⁺ powders at low processing temperatures. The technique uses yttrium oxide, europium oxide, nitric acid and urea, and has the potential for large-scale production for industrial applications. Several experimental conditions have been examined to optimize the luminescence efficiency. The best result was found to be at 2 mol% Eu doping and a 2 hour firing of 1400°C. Micro-structural information provided by x-ray diffraction, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) have been applied to interpret the observed luminescent properties
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ItemHigh quality thin film phosphor deposition for image intensifiers: growth(Georgia Institute of Technology, 1998) Wagner, Brent K. ; Summers, Christopher J.
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ItemHigh performance photodiodes(Georgia Institute of Technology, 1985) Summers, Christopher J.
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ItemEvaluation of CdS crystals(Georgia Institute of Technology, 1982) Blue, Marts Donald ; Summers, Christopher J.