Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Organic film"”.
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Characterization of Local field effect in organic film using pressure technique
… on the excitonic energy levels in amorphous organic thin films for optoelectronic device applications. Compression of organic films causes a decrease in intermolecular spacing and, through solvation effects, lowers the exciton transition energy. A series of steady-state photoluminescence (PL) …
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Electronic properties of metal-organic and organic-organic interfaces studied by photoemission and photoabsorption spectroscopy
In this work systematic studies of the organic semiconductor CuPc have been presented. In general the investigation can be devided in three parts. In the first one we have studied the electronic structure of clean CuPc thin film. The next two parts are devoted to organic-organic and metal–organic …
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Electromechanical modulation of electrical conduction through organic thin films for switching applications
… through a nanometer-thick gap defined by an organic thin-film sandwiched between two electrodes. The switching is initiated by an applied voltage compressing the organic film to reduce the tunneling width leading to an exponential increase in the tunneling current. The deformed organic …
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Porosity control of alkali-activated aluminosilicates via functional alkoxysilane additives
… organo-silane supplements to improve adhesion to organic polymers and to modify porosity. Uncured geopolymer slurry was found to be miscible with various alkoxysilanes, and the resulting cured geopolymer strongly adhered to organic polymers if and only if the alkoxysilane possessed an appropriate …
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Investigating the pH of atmospheric fine particles and implications for atmospheric chemistry
… model and measurements of RH, T, and inorganic gas and particle species. The method was first developed during the SOAS field campaign conducted in the southeastern U.S. in summer (pH = 0.94 ± 0.59), and then extended to aircraft observations in the northeastern U.S. in winter (WINTER …
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BIOFUNCTIONALIZATION ON HYDROGEN-TERMINATED SILICON(111) SURFACES
… involved in our research were: 1) improvement of organic film passivation apparatus for high quality film formation to prevent oxidation of underlying bulk silicon; 2) development of easily reproducible acetylenylated base layer on silicon surfaces for convenient introduction of organic moieties; …
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Influence of deposition parameters on morphology, growth and structure of crystalline and amorphous organic thin films : (the case of perylene and alpha-NPD)
A growing research effort in organic electronics has been developped rapidly to utilize the electronic and optical properties of organic materials (polymers and oligomers) and hybrids (organic-inorganic composites) through novel material synthesis, thin film deposition techniques and many mores. …
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Spin injection and manipulation in organic semiconductors
The use of organic semiconductors to enable organic spintronic devices requires the understanding of transport and control of the spin state of the carriers. This thesis deals with the above issue, focusing on the interface between the organic semiconductor and the spin source. The morphology of …
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Surfactant Behavior in Atmospheric Aerosols
… climate system. While aerosols contain a mix of organic and inorganic material, a sub-fraction of the organic material in atmospheric aerosols is surface active, arranging itself into organic films at the gas-aerosol interface. These films can inhibit trace gas uptake, affecting atmospheric …
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Growth, structure and morphology of organic thin films
Over the past two decades, organic semiconductors have emerged as a technologically important class of electronic materials. Promising applications include organic field effect transistors (OFETs), organic light-emitting devices (OLEDs), organic lasers, and photovoltaic cells. These devices have in …