Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Cerium oxide (1)
- Copper phthalocyanine (1)
- CuPc (1)
- Enhancement factors (1)
- High dielectric constant materials (1)
-
- Ion implantation (1)
- Lithography (1)
- Metal nanostructures (1)
- Multilayer hetero-structures (1)
- Nano-crystalline; diamond; ion beam (1)
- Nano-scale thin films (1)
- Organic solar cells (1)
- Oxygen ionic conductivity (1)
- Polarization analyzer; inelastic scattering x-ray; HOPG; bend silicon (1)
- Polarization mechanisms (1)
- Solid oxide fuel cells (1)
- Structure-property relationships (1)
- Surface Plasmon resonance (1)
- Zirconium oxide (1)
Articles 1 - 5 of 5
Full-Text Articles in Physical Sciences and Mathematics
Development Of Polarization Analysis Of Resonant Inelastic X-Ray Scattering, Xuan Gao
Development Of Polarization Analysis Of Resonant Inelastic X-Ray Scattering, Xuan Gao
Dissertations
Resonant inelastic x-ray scattering (RIXS) is a powerful technique in condensed matter physics for studying the electronic excitations in novel materials of interest. In currently operating hard x-ray RIXS instruments the energy and momentum transfers are measured while the outgoing polarization is not measured due to significant technical challenges. But the outgoing polarization of the scattered photons provides valuable information (excitation symmetry) about the states involved in the scattering which is difficult to determine without polarization analysis. Polarization analysis has proved extremely valuable in soft x-ray RIXS, and so a polarization analysis system is being developed to fill the technical …
Organic Solar Cells Based On High Dielectric Constant Materials: An Approach To Increase Efficiency, Khalil Jumah Tawfiq Hamam
Organic Solar Cells Based On High Dielectric Constant Materials: An Approach To Increase Efficiency, Khalil Jumah Tawfiq Hamam
Dissertations
The efficiency of organic solar cells still lags behind inorganic solar cells due to their low dielectric constant which results in a weakly screened columbic attraction between the photogenerated electron-hole system, therefore the probability of charge separating is low. Having an organic material with a high dielectric constant could be the solution to get separated charges or at least weakly bounded electron-hole pairs. Therefore, high dielectric constant materials have been investigated and studied by measuring modified metal-phthalocyanine (MePc) and polyaniline in pellets and thin films. The dielectric constant was investigated as a function of temperature and frequency in the range …
Compositional And Structural Analysis Of Nitrogen Incorporated And Ion Implanted Diamond Thin Films, Elias James Garratt
Compositional And Structural Analysis Of Nitrogen Incorporated And Ion Implanted Diamond Thin Films, Elias James Garratt
Dissertations
Significant progress in area of nano-structured thin film systems has taken place in recent decades. In particular, diamond thin film systems are being widely studied for their wear resistant, optical and electronic properties. Of the various methods researchers use to modify the structure of such films, three techniques in particular are of interest due to their versatility: modification of the growth atmosphere, growth on metalized substrates, providing an interfacial layer, and modification through post-growth ion implantation. The aim of this study is to investigate the effects each has to the structure and composition of elements. Different techniques are applied in …
Engineered Interfaces And Nano-Scale Thin Films For Solid Oxide Fuel Cell Electrolytes, Manjula I. Nandasiri
Engineered Interfaces And Nano-Scale Thin Films For Solid Oxide Fuel Cell Electrolytes, Manjula I. Nandasiri
Dissertations
Solid state electrolytes with high oxygen ionic conductivity at low temperatures are required to develop cost effective and efficient solid oxide fuel cells. This study investigates the influence of engineered interfaces on the oxygen ionic conductivity of nano-scale multilayer thin film electrolytes. The epitaxial Sm2O3 doped CeO2 (SDC) and Sc2O3 stabilized ZrO2 (ScSZ) are selected as the alternative layers for the proposed multilayer thin film electrolyte based on the optimum structural, chemical, and electrical properties reported in the previous studies. The epitaxial SDC(111)/ScSZ(111) multilayer thin films are grown on high …
Localized Surface Plasmon Resonance Induced Structure-Property Relationships Of Metal Nanostructures, Subramanian Vilayurganapathy
Localized Surface Plasmon Resonance Induced Structure-Property Relationships Of Metal Nanostructures, Subramanian Vilayurganapathy
Dissertations
The confluence of nanotechnology and plasmonics has led to new and interesting phenomena. The industrial need for fast, efficient and miniature devices which constantly push the boundaries on device performance tap into the happy marriage between these diverse fields. Designing devices for real life application that give superior performance when compared with existing ones are enabled by a better understanding of their structure-property relationships. Among all the design constraints, without doubt, the shape and size of the nanostructure along with the dielectric medium surrounding it has the maximum influence on the response and thereby the performance of the device. Hence …