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Synthesis, characterization, and film fabrication of inorganic and hybrid semiconductor materials for optoelectonic applications
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Synthesis, characterization, and film fabrication of inorganic and hybrid semiconductor materials for optoelectonic applications
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ETD_1218
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http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051760
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eng
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theses
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Chemistry and Chemical Biology
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(authority = ETD-LCSH)
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Semiconductors
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(authority = ETD-LCSH)
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Optoelectronic devices
Abstract
We have developed and studied selected properties of a novel type of inorganic-organic hybrid semiconductor materials in order to enhance the functionality over their parent structures. Since inorganic organic hybrid semiconductor materials are composed of both inorganic and organic segments, one may expect them to have the advantage of combining the excellent electrical, optical, thermal and transport properties from the inorganic component with the flexibility, processability and structural diversity from the organic component. As a continuing effort, we have synthesized, modified, and characterized a number of selected structures with potential for solid state lighting applications. For example, we have developed the first inorganic organic semiconductor bulk material, double layered 2D-Cd2Q2(ba)(Q=S, Se), capable of producing direct white light. This type of materials could be promising for use as a single-material white-light-emitting source in white LEDs. Luminescence properties of these hybrid semiconductors can be tuned systematically by changing their composition and doping level. In addition, a thin pellet of one of our hybrid semiconductor materials without any modifications showed low electrical conductivity. Significant improvement may be anticipated with modifications.
Solution processed deposition techniques provide great opportunities for optical and optoelectronic devices, such as displays, solid state lighting, and solar cells, because it enables to fabricate flexible devices with low-cost and large area fabrications. Most semiconductors show very low solubility in organic solvents, thus limiting the opportunities to prepare thin films using soluble precursors. In this study, we have developed a simple, efficient, and low-cost solution-processed deposition route to fabricate metal chalcogenide semiconductor thin films by using soluble precursors via a spin-coating technique. Surface morphology was directly influenced by the choice of organic solvents as well as the spin-coating sequences, thus affecting the electrical transport of the films. In the case of hybrid semiconductors, a conducting polymer was employed to help forming more uniform composite films.
Solution processed deposition techniques provide great opportunities for optical and optoelectronic devices, such as displays, solid state lighting, and solar cells, because it enables to fabricate flexible devices with low-cost and large area fabrications. Most semiconductors show very low solubility in organic solvents, thus limiting the opportunities to prepare thin films using soluble precursors. In this study, we have developed a simple, efficient, and low-cost solution-processed deposition route to fabricate metal chalcogenide semiconductor thin films by using soluble precursors via a spin-coating technique. Surface morphology was directly influenced by the choice of organic solvents as well as the spin-coating sequences, thus affecting the electrical transport of the films. In the case of hybrid semiconductors, a conducting polymer was employed to help forming more uniform composite films.
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electronic resource
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xix, 146 p. : ill.
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Ph.D.
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Includes bibliographical references
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by Wooseok Ki
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Ki
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Wooseok
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Wooseok Ki
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Li
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Jing
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Jing Li
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Brennan
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John
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John Brennan
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Garfunkel
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Eric
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Eric Garfunkel
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Birnie
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Dunbar
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Dunbar Birnie
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Rutgers University
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Graduate School - New Brunswick
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2008
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2008-10
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xx
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Rutgers University Electronic Theses and Dissertations
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Graduate School - New Brunswick Electronic Theses and Dissertations
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doi:10.7282/T3862GM8
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ETD doctoral
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Rights
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The author owns the copyright to this work.
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Copyright protected
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Open
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Ki
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Wooseok
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Wooseok Ki
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Rutgers University. Graduate School - New Brunswick
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I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
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