Index Catalog // ScholarsArchive@OSU

Creator:: Baukol, B. A., Hitt, J. C., Keir, P. D., and Wager, J. F.
Abstract:: Electroluminesence (EL) thermal quenching refers a reduction in luminance, concomitant with a reduction in transferred charge, when an alternating-current thin-film electroluminescent (ACTFEL) device is operated at an elevated temperature. EL thermal quenching is found to be significant in SrS:Cu ACTFEL devices operated above ~60-80 °C. Maximum transferred charge-maximum applied voltage...
Resource Type:: Article
Full Text:: Using APL format APPLIED PHYSICS LETTERS VOLUME 76, NUMBER 2 10

Creator:: Foley, Brian M., Brown-Shaklee, Harlan J., Duda, John C., Cheaito, Ramez, Gibbons, Brady J., Medlin, Doug, Ihlefeld, Jon F., and Hopkins, Patrick E.
Abstract:: We measure the thermal conductivities of nano-grained strontium titanate (ng-SrTiO₃) films deposited on sapphire substrates via time-domain thermoreflectance. The 170 nm thick oxide films of varying grain-size were prepared from a chemical solution deposition process. We find that the thermal conductivity of ng-SrTiO₃ decreases with decreasing average grain size and attribute...
Resource Type:: Article
Full Text:: Thermal conductivity of nano-grained SrTiO3 thin films Brian M

Creator:: Raengthon, Natthaphon, DeRose, Victoria J., Brennecka, Geoffrey L., and Cann, David P.
Abstract:: The defect mechanisms that underpin the high energy density dielectric 0.8BaTiO₃–0.2Bi(Zn₁/₂Ti₁/₂) O₃ were investigated. Characterization of the nominally stoichiometric composition revealed the presence of a Ti³⁺-related defect center, which is correlated with lower resistivities and an electrically heterogeneous microstructure. In compositions with 2 mol. % Ba-deficiency, a barium vacancy-oxygen vacancy...
Resource Type:: Article

Creator:: Liliental, Z., Wager, J. F., and Goodnick, S. M.
Abstract:: InP/SiO₂ interfaces have been studied by high resolution electron microscopy in cross section, by ellipsometry, and by x-ray photoelectron spectroscopy. The roughness of the interface is shown to vary from 10 to 100 Å peak to peak depending on the InP surface treatment prior to SiO₂ desposition, and some evidence...
Resource Type:: Article

Creator:: Launey, M. E., Kruzic, J. J., Li, C., and Busch, R.
Abstract:: Deformation of metallic glasses requires the existence of free volume to allow atomic movement under mechanical loading. Accordingly, quantification of the free volume state of the alloy is crucial to understand it's mechanical behavior. By annealing below the glass transition temperature, the free volume of a Zr₄₄Ti₁₁Ni₁₀Cu₁₀Be₂₅ bulk metallic glass...
Resource Type:: Article
Full Text:: Zr44Ti11Ni10Cu10Be25 bulk amorphous alloy M. E. Launey and J. J. Kruzica! Department of Mechanical Engineering, Oregon

Creator:: Keir, P. D., Wager, J. F., Clark, B. L., Li, D., and Keszler, Douglas A.
Abstract:: A unique approach for obtaining bright and efficient saturated green phosphors for alternating-current thin-film electroluminescent (ACTFEL) device applications is presented. The approach involves color-shifting blue SrS:Cu,F ACTFEL phosphors into the green region of the spectrum via the incorporation of alkali metal ions into the SrS lattice. Alkali metals are incorporated...
Resource Type:: Article
Full Text:: Using APL format APPLIED PHYSICS LETTERS VOLUME 75, NUMBER 10 6

Creator:: Wu, J. C., Wybourne, M. N., Yindeepol, W., Weisshaar, A., and Goodnick, S. M.
Abstract:: Narrow channel devices were fabricated using a split-gate high electron mobility transistor structure in which electrons are forced through a double-bend discontinuity. The low-temperature conductance shows a number of peaks in the lowest quantized conductance plateau which correspond qualitatively to resonance effects that are predicted for the geometrical discontinuities of...
Resource Type:: Article
Full Text:: . Goodnick Department of Electrical and Computer Engineering, Oregon State University, Corv~liis, Qregon

Creator:: Ren, Fanghui, Wang, Xiangyu, and Wang, Alan X.
Abstract:: We demonstrate active control of plasmonic bandgap on a metallic photonic crystal slab using thermo-optic effects. The Au grating, which is milled by focused-ion beam on a glass substrate, is designed to exhibit an extraordinary optical transmission and a sharp transitional edge for high modulation efficiency. Only a moderate refractive...
Resource Type:: Article
Full Text:: Fanghui Ren, Xiangyu Wang, and Alan X. Wanga) School of Electrical Engineering and Computer Science

Creator:: Chiang, H. Q., Wager, J. F., Hoffman, R. L., Jeong, J., and Keszler, Douglas A.
Abstract:: Transparent thin-film transistors (TTFTs) with an amorphous zinc tin oxide channel layer formed via rf magnetron sputter deposition are demonstrated. Field-effect mobilities of 5–15 and 20–50 cm² V‾¹ s‾¹ are obtained for devices post-deposition annealed at 300 and 600 °C, respectively. TTFTs processed at 300 and 600 °C yield devices...
Resource Type:: Article
Full Text:: zinc tin oxide channel layer H. Q. Chianga) and J. F. Wager School of Electrical Engineering and

Creator:: Hoffman, R. L., Norris, Benjamin J., and Wager, J. F.
Abstract:: Highly transparent ZnO-based thin-film transistors (TFTs) are fabricated with optical transmission (including substrate) of ~75% in the visible portion of the electromagnetic spectrum. Current–voltage measurements indicate n-channel, enhancement-mode TFT operation with excellent drain current saturation and a drain current on-to-off ratio of ~10⁷. Threshold voltages and channel mobilities of devices...
Resource Type:: Article
Full Text:: APPLIED PHYSICS LETTERS VOLUME 82, NUMBER 5 3 FEBRUARY

ScholarsArchive@OSU