Open Access. Powered by Scholars. Published by Universities.®
Other Materials Science and Engineering Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Scintillator (2)
- BHJ (1)
- Bridgman (1)
- Bulk Heterojunction (1)
- Cerium (1)
-
- Combinatorial (1)
- Crystal growth (1)
- Differential scanning calorimetry (1)
- Dynamic vapor sorption (1)
- Halide (1)
- Infrared spectroscopy (1)
- Lutetium orthosilicate (1)
- P3HT (1)
- PCBM (1)
- Photovoltaics (1)
- Polymer (1)
- Radiation detection (1)
- Scintillators (1)
- Spectroscopy (1)
- Sputter (1)
- Thermogravimetric analysis (1)
- Thin film (1)
- Publication
Articles 1 - 5 of 5
Full-Text Articles in Other Materials Science and Engineering
Exploration Of Thin Films For Neuromorphic, Electrofluidic, And Magneto-Plasmonic Applications, Walker L. Boldman University Of Tennessee Knoxville
Exploration Of Thin Films For Neuromorphic, Electrofluidic, And Magneto-Plasmonic Applications, Walker L. Boldman University Of Tennessee Knoxville
Doctoral Dissertations
Due to the limit in computing power arising from the Von Neumann bottleneck, computational devices are being developed that mimic neuro-biological processing in the brain by correlating the device characteristics with the synaptic weight of neurons. We demonstrate a platform that combines ionic liquid gating of amorphous indium gallium zinc oxide (aIGZO) thin film transistors and electrowetting for programmable placement/connectivity of the of the ionic liquid. In this platform, both short term potentiation (STP) and long-term potentiation (LTP) are realized via electrostatic and electrochemical doping of the aIGZO, respectively, and pulsed bias measurements are demonstrated for low power considerations. Using …
Strategies For Controlling Bulk Heterojunction Morphology, Zach Daniel Seibers
Strategies For Controlling Bulk Heterojunction Morphology, Zach Daniel Seibers
Doctoral Dissertations
Organic photovoltaic devices have been extensively studied as a means to produce sustainable energy. However, the performance of organic-photovoltaic (OPV) devices is dependent upon a number of factors including the morphology of the active layer, device architecture, and processing conditions. Recent research has indicated that fullerenes in the bulk heterojunction are entropically driven to the silicon and air interfaces upon crystallization of P3HT, which occurs during thermal annealing. The first chapter of this research focuses on investigating the structure and function of end-tethered poly(3-hexylthiophene) chains to a transparent electrode as an anode buffer layer. Neutron reactivity reveals that these P3HT …
Spectroscopic, Thermal, And Physical Analysis Of The Raw Materials In Europium Doped Cesium Strontium Iodide Scintillator, Bonnie Dell Blalock
Spectroscopic, Thermal, And Physical Analysis Of The Raw Materials In Europium Doped Cesium Strontium Iodide Scintillator, Bonnie Dell Blalock
Masters Theses
Scintillators are widely used in homeland security applications that utilize gamma-ray spectroscopy. An ideal scintillator for this purpose should possess a high effective atomic number, high light yield, and good energy resolution. The scintillator CsSrI3: Eu [cesium strontium iodide: europium], recently developed at the Scintillation Materials Research Center, has excellent properties. Recent efforts have been made to evaluate the basic thermal properties and IR spectra of the compound’s raw materials as part of a project to improve the quality of grown crystals. Fourier transform infrared spectroscopy of high purity anhydrous CsI [cesium iodide], SrI2 [strontium iodide], and …
Discovery And Development Of Rare Earth Activated Binary Metal Halide Scintillators For Next Generation Radiation Detectors, Kan Yang
Doctoral Dissertations
This work focuses on discovery and development of novel binary halide scintillation materials for radiation detection applications. A complete laboratory for raw materials handling, ampoule preparation, material rapid synthesis screening, single crystal growth, sample cutting, polishing and packaging of hygroscopic halide scintillation materials has been established. Ce3+ and Eu2+ activated scintillators in three binary systems: Alkali Halide – Rare Earth Halide (AX–REX3), Alkali Halide – Alkaline Earth Halide (AX–AEX2) and Alkalin Earth Halide – Rare Earth Halide (AEX2–REX3) were systematically studied. Candidates for new scintillation materials in the three systems …
Thin Film Combinatorial Synthesis Of Advanced Scintillation Materials, Jonathan Daniel Peak
Thin Film Combinatorial Synthesis Of Advanced Scintillation Materials, Jonathan Daniel Peak
Doctoral Dissertations
The development and application of a combinatorial sputtering thin film technique to screen potential scintillation material systems was investigated. The technique was first benchmarked by exploring the binary lutetium oxide-silicon oxide material system, which successfully identified the luminescence phases of the system, Lu2SiO5 (LSO) and Lu2Si2O7 (LPS). The second application was to optimize the activator concentration in cerium doped LSO. The successfully optimized cerium concentration in the thin film LSO of 0.34 atomic percent was much greater than the standard cerium concentration in single crystal LSO. This lead to an intensive study based on temperature dependent steady-state and lifetime photoluminescence …