Index Catalog // ScholarsArchive@OSU

Wide band gap semiconductors and insulators : synthesis, processing and characterization

Creator:: Hersh, Peter A.
Abstract:: The work presented here is focused on applying basic principles of solid-state chemistry to the study and development of new wide band-gap semiconductors and insulators for photovoltaic and electronic-device applications. Analysis of crystal structure, band structure, optical band gap, morphology and transport properties provides fundamental insight into materials performance as...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________ Douglas A. Keszler The work presented here is focused on applying basic

On the Properties and Characteristics of Solution Processed Hafnium Based Thin-Films from Aqueous Precursors

Creator:: Decker, Shawn R.
Abstract:: Aqueous hydroxo Hf nanoclusters enable studies to identify and codify steps in the deposition of Hf-based oxide thin films from solution precursors. HfOCl2 reacts with combinations of H2O2(aq), acids, and TMAH to produce polymetal species at high pH and low pH. X-ray scattering and spectroscopic methods reveal the nature of...
Resource Type:: Dissertation
Full Text:: Abstract approved: ______________________________________________________ Douglas A. Keszler

Iron and copper chalcogenides : photovoltaic absorber candidates and YZrF7 : a new upconversion host, Iron and copper chalcogenides : photovoltaic absorber candidates and YZrF₇ : a new upconversion host

Creator:: Jieratum, Vorranutch
Abstract:: The materials Fe₂(Si,Ge)(S,Se)₄, Cu₃PS[subscript 4-x]Se[subscript x] (0 ≤ x ≤ 4), and Cu₃PxAs[subscript 1-x]S₄ (0 ≤ x ≤ 1) have been synthesized and studied as new earth-abundant absorbers for single and multijunction photovoltaic cells as well as solar fuel generation. The synthesis, single-crystal growth, and optical and electrical properties of...
Resource Type:: Dissertation
Full Text:: : ____________________________________________________ Douglas A. Keszler The materials Fe2(Si,Ge)(S,Se)4, Cu3PS4-xSex (0 ≤ x ≤ 4), and Cu3PxAs1

Electroluminescent and photoluminescent phosphor development and a facile approach to synthesis of refractory silicates at low temperatures

Creator:: Clark, Benjamin L.
Resource Type:: Dissertation
Full Text:: Synthesis of Refractory Silicates at Low Temperatures. Abstract Approved: Douglas A. Keszler Several

Copper and iron chalcogenides for efficient solar absorption

Creator:: Platt, Heather A. S.
Abstract:: This dissertation outlines two approaches for improving the efficiency and reducing the cost of photovoltaic energy generation. First, the structures of known binary copper and iron compounds are used to choose the promising compositions Fe₂XS₄ (X = Si, Ge), Cu₃TaQ₄ (Q = Se, Te), and BaCuQ'F (Q' = S, Se,...
Resource Type:: Dissertation
Full Text:: : Copper and Iron Chalcogenides for Efficient Solar Absorption Abstract approved: Douglas A. Keszler

Synthesis and study of transparent p- and n-type semiconductors and luminescent materials

Creator:: Park, Cheol-Hee
Abstract:: New transparent p- and n-type semiconductors and luminescent materials have been prepared and characterized. Synthesis, structures, optical and electrical properties of new chalcogenide fluoride p-type transparent semiconductors MCuQF (M=Ba, Sr; Q=S, Se, Te) are described. Band-gap tuning and improvement in conductivity through p-type doping are demonstrated in the family. The...
Resource Type:: Dissertation
Full Text:: for Privacy ACKNOWLEDGMENTS I would first like to thank my major professor Dr. Douglas A. Keszler

Rhenium-catalyzed oxygen-atom transfer reactions : mechanism and applications

Creator:: Brown, Eric C.
Abstract:: In situ reduction of hydrido-tris-(3,5-dimethylpyrazolyl)borato(trioxo) rhenium(V) with triphenylphosphine or triethylphosphite leads to a reactive rhenium(V) species that catalytically deoxygenates epoxides at 75-105°C. The reaction is stereospecific, except for trans- and cis-butene oxide which formed minor amounts of the opposite isomer. A variety of different functional groups were tolerated and even...
Resource Type:: Dissertation
Full Text:: committee members Prof. James White, Prof. Max Deinzer, Prof. Douglas Keszler and Prof. Janet Tate for

Optical, electronic, and thermodynamic properties of layered mixed anion compounds

Creator:: Vielma, Jason Michael
Abstract:: Mixed anion compounds that form ZrCuSiAs-type crystal structures exhibit remarkable properties such as superconductivity at low temperatures, hole conduction with optical transparency in the visible region, and exciton absorption at room temperature. In this thesis, properties of a selected group of materials out of the very large set of mixed...
Resource Type:: Dissertation

Development of Cu-based Thin Films for Optoelectronic Applications

Creator:: Angelos, Gregory S.
Abstract:: CIGS and CdTe based commercial thin-ﬁlm solar cells (TFSCs) require an absorber thickness greater than 2 µm and 4 µm, respectively, to adequately absorb the solar spectrum. To efficiently extract photoexcited electrons, these TFSCs require relatively defect-free absorbers with high-minority carrier mobility (> 100 cm2V−1s−1) and long lifetime (> 10...
Resource Type:: Dissertation

Investigation of the structural influence on the properties of functional inorganic oxides

Creator:: Laurita-Plankis, Geneva
Abstract:: While properties are extremely important from an application point of view, it is crucial to have a detailed understanding of the underlying structural influence. Once a concrete correlation between the structure and the observed property is established, rational design of novel materials with optimized properties can be realized. These optimized...
Resource Type:: Dissertation
Full Text:: Dr. Romain Berthelot, Dr. Sean Muir, Dr. James Eilertsen, and Dr. Jun Li. I cannot express how

ScholarsArchive@OSU

Wide band gap semiconductors and insulators : synthesis, processing and characterization

On the Properties and Characteristics of Solution Processed Hafnium Based Thin-Films from Aqueous Precursors

Iron and copper chalcogenides : photovoltaic absorber candidates and YZrF7 : a new upconversion host, Iron and copper chalcogenides : photovoltaic absorber candidates and YZrF₇ : a new upconversion host

Electroluminescent and photoluminescent phosphor development and a facile approach to synthesis of refractory silicates at low temperatures

Copper and iron chalcogenides for efficient solar absorption

Synthesis and study of transparent p- and n-type semiconductors and luminescent materials

Rhenium-catalyzed oxygen-atom transfer reactions : mechanism and applications

Optical, electronic, and thermodynamic properties of layered mixed anion compounds

Development of Cu-based Thin Films for Optoelectronic Applications

Investigation of the structural influence on the properties of functional inorganic oxides

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