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in subjects: "Zinc Oxides"

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Transparent ZnO-based ohmic contact to p-GaN

Highly conductive ZnO films were fabricated on p-GaN in a two-step process. First, zinc was thermally evaporated on p-GaN. Next, zinc film was oxidized in oxygen flow. To increase the conductivity of ZnO, nitrogen was introduced into zinc during its deposition. The above procedure proved successful in fabricating ZnO of the resistivity of {approx}1 x 10{sup -3} {Omega}cm and resulted in ohmic contacts of resistivity {approx}1 x 10{sup -2} {Omega}cm{sup 2} to low-doped p-GaN, and light transmitt… more

Date: April 9, 2002

Creator: Kaminska, E.; Piotrowska, A.; Golaszewska, K.; Guziewicz, M.; Kruszka, R.; Kudla, A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

CHEMISTRY OF SO{sub 2} ON MODEL METAL AND OXIDE CATALYSTS: PHOTOEMISSION AND XANES STUDIES

High-resolution synchrotron based photoemission and x-ray absorption spectroscopy have been used to study the interaction of SO{sub 2} with a series of metals and oxides. The chemistry of SO{sub 2} on metal surfaces is rich. At low coverages, the molecule fully decomposes into atomic S and O. At large coverages, the formation of SO{sub 3} and SO{sub 4} takes place. The following sequence was found for the reactivity of the metals towards SO{sub 2}: Pt {approx} Rh < Ru < Mo << Zn, Sn… more

Date: July 9, 2000

Creator: Rodriguez, J. A.; Jirsak, T.; Chaturvedi, S.; Hrbek, J.; Freitag, A. & Larese, J. Z.