Index Catalog // ScholarsArchive@OSU

Pulsed laser deposition and thin film properties of p-type BaCuSF, BaCuSeF, BaCuTeF and n-type Zn₂In₂O[subscript 5] wide band-gap semiconductors

Creator:: Kykyneshi, Robert
Abstract:: Thin films of wide band-gap semiconductors are deposited by the pulsed laser deposition method. Optimal deposition parameters for the individual compounds are reported. A family of p-type BaCuQF (Q = S, Se, Te) ceramics with a layered crystalline structure is investigated for active and passive device applications. Epitaxial films of...
Resource Type:: Dissertation
Full Text:: 28. C.-H. Park, R. Kykyneshi, A. Yokochi, J. Tate, and D. A. Keszler, J. Solid State Chem. 180

Transport properties of CuSc₁₋(subscript x)Mg(subscript x)O₂₊(subscript y) and BaCu₂S₂ transparent semiconductors

Creator:: Kykyneshi, Robert
Abstract:: Bulk properties of CuSc₁₋ₓMgₓO₂, CuSc₁₋ₓMgₓO₂₊y, BaCu₂S₂, Bai₁₋ₓKCu₂S₂, BaCu₂Se₂ and Bai₁₋ₓKₓCu₂Se₂ are investigated supporting the search for highly conductive p-type thin films. Mg is an efficient dopant in CuScO₂ with conductivity up to l.5.10⁻² S/cm. Oxidation of CuScO₂:Mg leads to further increase in conductivity up to 0.5 S/cm. The amount of...
Resource Type:: Masters Thesis
Full Text:: transport properties of CuSciMg02+ delafossites R. Kykyneshi, B. C. Nielsen, J. Tate* Department of

Structural and transport properties of CuSc₁₋ₓMgₓO[subscript 2+y] delafossites

Creator:: Kykyneshi, R., Nielsen, B. C., Tate, Janet, Li, J., and Sleight, A. W.
Abstract:: Transport and structural properties of Mg-doped and O-intercalated sintered powders and polycrystalline films of CuSc₁₋ₓMgₓO[subscript 2+y] are reported. Substitution of Mg for Sc systematically increases the p-type conductivity in CuSc₁₋ₓMgₓO₂ sintered powders, producing a maximum conductivity of 0.015 S/cm at x≈0.06. A similar level of conductivity is observed in transparent...
Resource Type:: Article
Full Text:: delafossites Structural and transport properties of CuSc1−xMgxO2+y delafossites R. Kykyneshi, B. C. Nielsen

Zinc Tin Oxide Thin Films by Pulsed Laser Deposition for use in Transparent Thin-Film Transistors

Creator:: Osborne, James J.
Abstract:: Zinc tin oxide (ZTO) films deposited by pulsed laser deposition (PLD) are investigated as a channel layers for transparent thin-film transistors (TTFTs). Films are deposited on glass for characterization, and transistor channel layers are deposited onto aluminum oxide-titanium oxide/tin doped indium oxide/glass substrates (ATO/ITO/glass) to produce TTFTs. UV-visible spectroscopy on...
Resource Type:: Masters Thesis
Full Text:: substrates (ATO/ITO/glass) to produce TTFTs. UV-visible spectroscopy on films gives average T/( 1 -R) values

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:: Films, 445, 304 (2003) [35] C. H. Park, R. Kykyneshi, A. Yokochi, J. Tate D. A. Keszler, J. Solid

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:: , Heather Platt, Stephen Meyers, Spencer Porter, Dr. Hiroshi Yanagi, Robert Kykyneshi, Paul Newhouse

Valence band structure of BaCuSF and BaCuSeF

Creator:: Yanagi, Hiroshi, Tate, Janet, Park, Sangmoon, Park, Cheol-Hee, Keszler, Douglas A., Hirano, Masahiro, and Hosono, Hideo
Abstract:: The origin of high hole conduction in BaCuQF (Q=S,Se) was investigated by photoemission measurements and full-potential linearized augmented plane wave band-structure calculations. In both compounds, the large dispersion near the top of the valence band is realized by admixed states of Cu 3d and S 3p or Se 4p orbitals,...
Resource Type:: Article
Full Text:: , 1048 �2003�. 12R. Kykyneshi, J. Tate, C.-H. Park, and D. A. Keszler �unpublished�. 13S. Park, D. A

Characterization of BaCuSF Thin Films Grown in Excess Copper, by Pulsed Laser Deposition

Creator:: DeBlander, Evan F.
Abstract:: Thin films of the p-type semiconductor, barium copper sulfide fluoride (BaCuSF) were deposited using pulsed laser deposition. Similar p-type conductivity in Cu2O is caused by copper vacancies. Addition of copper dopant is proposed as a method for filling the copper vacancies in BaCuSF. The films are characterized to determine quality...
Resource Type:: Honors College Thesis
Full Text:: . Raebiger, S. Lany, and A. Zunger, Phys. Rev. B 76, 045209, (2007) 4 R. Kykyneshi, Phd thesis, Oregon

Growth and characterization of wide–gap semiconducting oxide and chalcogenide thin films by pulsed laser deposition

Creator:: Newhouse, Paul F.
Abstract:: The preparation and characterization of thin film oxides and chalcogenides by pulsed laser deposition (PLD) is presented. An overview of fundamental PLD concepts are presented and are followed by a description implementation and development of the PLD systems at OSU. We present the results of thin film growth of high...
Resource Type:: Dissertation
Full Text:: ) Minami, T. Thin Solid Films. 2008, 516, 5822-5828. 5 (4) Kykyneshi, R.; McIntyre, D.; Tate, J

Synthesis, structure and properties of some transition metal oxides

Creator:: Li, Jun
Abstract:: See pdf
Resource Type:: Dissertation

ScholarsArchive@OSU

Pulsed laser deposition and thin film properties of p-type BaCuSF, BaCuSeF, BaCuTeF and n-type Zn₂In₂O[subscript 5] wide band-gap semiconductors

Transport properties of CuSc₁₋(subscript x)Mg(subscript x)O₂₊(subscript y) and BaCu₂S₂ transparent semiconductors

Structural and transport properties of CuSc₁₋ₓMgₓO[subscript 2+y] delafossites

Zinc Tin Oxide Thin Films by Pulsed Laser Deposition for use in Transparent Thin-Film Transistors

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

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

Valence band structure of BaCuSF and BaCuSeF

Characterization of BaCuSF Thin Films Grown in Excess Copper, by Pulsed Laser Deposition

Growth and characterization of wide–gap semiconducting oxide and chalcogenide thin films by pulsed laser deposition

Synthesis, structure and properties of some transition metal oxides

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