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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 20 of 49 for “"Silicon -- Surfaces."”.
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Stress and structure of silicon surfaces
… both the structure and the stress of the Silicon (111) surface. The kinematic analysis of electron diffraction data was used to determine the positions of the surface atoms of the Si(111)-7x7 reconstruction. Even under the seemingly drastic kinematic approximation, the atomic positions …
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Electrical properties of silicon surfaces and interfaces
… narrowing process tolerances for high quality silicon surfaces. Second, Si-based light emitting devices are studied to address a longer-term move towards photons instead of electrons for data transfer. A concerted effort is made to engineer environmentally benign solutions to these challenges. …
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STM Studies of Oxygen Etching of Silicon Surfaces
… the oxygen etching behavior of the following silicon surface orientations: (001), (111), (113), (5 5 12) and (112). Most etching was performed at sample temperatures between 650 °C and 800 °C, at pressures of 3.3×10-7 and 1.5×10-7 Torr, and at an exposure of 200 L. Surface orientation strongly …
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Development of Chemomechanical Functionalization and Nanografting on Silicon Surfaces
… binding of molecules and surface coverage on the silicon surface, demonstrating functionalization of silicon with gases by chemomechanical means, analyzing atomic force microscopy probe tip wear in atomic force microscopy (AFM) chemomechanical nanografting, combining chemomechanical …
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Heterogeneous decomposition of trimethylaluminum and trimethylgallium on silicon surfaces
… decomposition of TMAl at low coverages on heated silicon substrates. In addition, molecular beam methods are employed to investigate the decomposition of TMGa directly on a heated surface at higher TMGa exposures. The decomposition mechanisms are identified through characterization of the …
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Characterization, Functionalization and Applications of Alkyl Monolayers on Silicon Surfaces
… alkyl monolayers chemomechanically prepared on silicon surfaces. A new method of surface modification, laser-activation modification of surfaces (LAMS), and multivariate analyses of time-of-flight secondary ion mass spectrometry (ToF-SIMS) images of LAMS spots were also reported. X-ray …
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Chemistry and physics of metallic contaminants on crystalline silicon surfaces
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1996.
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PRINTED METALLISATION OF PHOSPHORUS DOPED SILICON SURFACES FOR SOLAR CELL APPLICATIONS
… metallisation methods for high-efficiency silicon wafer solar cells. Metallisation of phosphorus doped surfaces using screen-printed silver (Ag) pastes is a well-established process. However, its performance is limited by several fundamental factors. Its inability to reliably print fine …
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Halogen-induced modification of silicon surfaces: etching roughening, and step transformations
… investigate halogen-induced modifications of Si surfaces, including etching, roughening and step transformations. These investigations have focused on elucidating the atomic-level details associated with the evolution of terrace and step sites on Cl-Si(100)-(2x1) under conditions of halogen …
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Material transfer associated with the contact between polymer and silicon surfaces
Material transfer due to the contact of surfaces is encountered in a wide variety of engineering applications. One of these is the backside contamination of silicon wafers due to contact with polymer vacuum chucks during spin coating. The present research investigates material transfer associated …
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Scanning Tunneling Microscopy and Spectroscopy of Carbon Nanotubes Interfaced With Silicon Surfaces
… term, however, the integration of SWNTs with silicon-based complementary metal-oxide-semiconductor (CMOS) technology holds the greatest promise in terms of economic and manufacturing feasibility. In this thesis, the ultrahigh vacuum scanning tunneling microscope (UHV-STM) is used to examine …
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Deposition of Metal Oxides and Metal Carbonyls on Silicon Surfaces Using Solution Chemistry
The Si-H bonds on the H-Si(111) surface and Co2(CO)8 in n-heptane solution reacted to form a well defined submonolayer coverage of Co(CO)4 above the surface plane of Si(111). Transmission Fourier-transform infrared spectroscopy analysis of (OC) 4Co-Si(111) yielded structural and geometric …
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Scanning tunneling microscopy and spectroscopy of nanometer scale metallic features on silicon surfaces
Nanometer scale metals are of great interest due to their potential applications in the future of molecular/atomic scale devices. For example, nanometer scale metal contacts on semiconducting single-walled carbon nanotubes (SWNTs) can determine the transport performance of SWNT based field effect …
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Synthesis and Characterization of Novel Polymers for Functional and Stimuli Responsive Silicon Surfaces
… and stimuli responsive coatings on silica surfaces are described. Since microscopic features on a surface influence the overall wetting properties of the surface, a systematic investigation of the influence of polymer architecture on the microscopic characteristics of the modified surfaces …
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Hydrogen terminated silicon surfaces: Development of sensors to detect metallic contaminants and stability studies under different environments
Hydrogen terminated silicon surfaces have been utilized to develop sensors for semiconductor and environmental applications. The interaction of these surfaces with different environments has also been studied in detail. The sensor assembly relevant to the semiconductor industry utilizes a …
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Molecular and polymeric films formed on silicon by solution-phase reactions
… details studies of the chemical reactivity of silicon surfaces and the development of new reactions for manipulating its surface properties by the formation of covalently attached molecular and polymeric films. Silicon is the central material in modern electronic devices, and the ability to …
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Computational and Experimental Studies of Coherence and Energy Flow in Microscopic and Mesoscopic Systems
The dynamics of STM based hydrogen desorption at silicon surfaces is another process in which an open systems approach is appropriate. Therefore, we adopt a master equation model previously applied to this problem, and propose resonant IR overtone excitation of the surface Si-H vibration as a …
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Interfacial Electrochemistry and Surface Characterization: Hydrogen Terminated Silicon, Electrolessly Deposited Palladium & Platinum on Pyrolyzed Photoresist Films and Electrodeposited Copper on Iridium
Hydrogen terminated silicon surfaces play an important role in the integrated circuit (IC) industry. Ultra-pure water is extensively used for the cleaning and surface preparation of silicon surfaces. This work studies the effects of ultra-pure water on hydrogen passivated silicon surfaces in a …
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