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Showing 1 to 20 of 47 for “"organic thin films"”.
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Analysis of Organic Thin Films
Made available in DSpace on 2014-12-13T20:10:30Z (GMT). No. of bitstreams: 1 7913438.pdf: 5362998 bytes, checksum: d016e1582eabc3e8155624365796983e (MD5) Previous issue date: 1978
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Functional organic thin films under extreme confinement
… is to harvest these unique properties of thin film materials at ""extreme confinement"", i.e., at condition when the film thickness reduces below a critical value where one or more structural aspects such as molecular packing, orientation, conformation, as well as properties begin to …
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Nanomechanical properties of hydrated organic thin films
Hydrated organic thin films are biological or synthetic molecularly thin coatings which impart a particular functionality to an underlying substrate and which have discrete water molecules associated with them. Such films exist in biology (e.g. cell membrane lipid bilayers) and have a broad array …
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Morphology-Property Relationship for Binary Organic Thin Films
<p>Organic thin films can be readily mass-produced through solution-based fabrication methods including ink-printing and solution-casting because their light weight, flexibility, and inexpensive sources. Their applications range from organic field-effect transistors (OFET), organic solar cells …
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Tunneling spectroscopy of highly ordered organic thin films
… Au(100) single crystal was used as substrate for organic molecular beam epitaxy. Highly ordered organic thin films of the molecules 3,4,9,10-perylenetetracarboxylic-3,4,9,10-dianhydrid (PTCDA) and hexa-peri-hexabenzo-coronene (HBC) as well as organic-organic heterostructures on reconstructed …
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Aspects of exciton behavior in amorphous organic thin films
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2002.
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Photoluminescence quenching of organic thin films by transparent conductive oxides
One fundamental challenge in designing organic light-emitting diodes is luminescence quenching near an electrode. In this work, we investigate the underlying mechanism behind luminescence quenching by measuring the reduction in Alq3 photoluminescence due to SnO02. Using an analytical model and a …
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High-resolution investigation of the electronic structure of organic thin films
Die vorliegende Arbeit befasst sich mit der elektronischen Struktur organischer Dünnfilme. Eine zentrale Frage dabei ist der Einfluss der Wechselwirkung zwischen den Molekülen in der kondensierten Phase und der Wechselwirkung an metall-organischen Grenzflächen auf die elektronischen Eigenschaften. …
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Characterization of Linear Electro-Optic Effect of Poled Organic Thin Films
… linear electro-optic (EO) coefficients of poled organic thin films based on a multilayer structure containing a transparent conducting oxide (TCO) layer. The linear EO properties are often characterized using the Teng-Man reflection method. However, it has been reported that experimental error …
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A comparative study of metrology techniques for porous organic thin films
… distribution, and percent porosity in these films in an industrial setting. Techniques used to characterize and monitor porosity in thin films are oftentimes destructive, such as Transmission Electroil Microscopy and Scanning Electron Microscopy; indirect, such as optical ellipsometry and …
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Surface studies of organic thin films using scanning probe microscopy and nanofabrication
… devices, gas sensors, photovoltaic cells, organic light-emitting diodes and molecular wires. The function and efficiency of porphyrins in devices is largely attributable to molecular architecture and how the molecules are self-organized. Modifications of the porphyrin macrocycle, peripheral …
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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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N-type doping of organic thin films using a novel class of dopants
… a new approach to stable n-type doping of organic matrices using organic dopants. In order to circumvent stability limitations of strong organic donors, I produce the donor from a stable precursor compound in situ. As an example, the cationic dye pyronin B chloride is studied as a dopant in …
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Functional multilayer organic thin films fabricated by layer-by-layer sequential adsorption technique
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1997.
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Investigations of Structure / Property Interrelationships of Organic Thin Films Using Scanning Probe Microscopy and Nanolithography
… surface assembly and molecular organization of organic thin films were studied using scanning probe microscopy (SPM) and scanning probe lithography (SPL). Systems of organic thin films such as n-alkanethiols and pyridyl functionalized porphyrins were characterized at the molecular level, and …
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The Dynamics of Gas-Surface Energy Transfer in Collisions of Rare Gases with Organic Thin Films
… the interaction time between gas molecules and organic surfaces. For example, how does interfacial structure and density affect energy transfer? What roles do intramonolayer forces and chemical identity play in the dynamics? We have approached these questions by scattering high-energy, rare gas …
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Organic Thin Films Deposited by Emulsion-Based, Resonant Infrared, Matrix-Assisted Pulsed Laser Evaporation: Fundamentals and Applications
<p>Thin film deposition techniques are indispensable to the development of modern technologies as thin film based optical coatings, optoelectronic devices, sensors, and biological implants are the building blocks of many complicated technologies, and their performance heavily depends on the applied …
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Spectroelectrochemical analysis of self-assembled monolayers on gold
Organic thin films prepared from long-chain organothiols have been self-assembled on gold surfaces and their chemistry and structural properties studied by physical, electrochemical and spectroscopic methods. The mechanism of charge transfer across these organic thin films was of particular …
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Theory and simulation of amorphous organic electronic devices
The electronic properties of amorphous organic thin films are of great interest due to their application in devices such as light emitting devices, solar cells, photodetectors, and lasers. Compared to conventional inorganic semiconductors, amorphous organic thin films have the potential to enable …
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Design and construction of instruments for exciton diffusion characterization and for patterning of thin films
… the instruments explore two main aspects of organic optoelectronic devices. One instrument characterizes exciton diffusion and the other patterns organic thin films. Exciton diffusion characteristics are important to study in organic materials because excitons mediate the transport of energy. …
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