Search Results - "GRUBER, Th"

Optical and structural analysis of ZnCdO layers grown by metalorganic vapor-phase epitaxy by Gruber, Th, Kirchner, C., Kling, R., Reuss, F., Waag, A., Bertram, F., Forster, D., Christen, J., Schreck, M.

“…The development of ZnO-based semiconductor devices requires band gap engineering. Ternary Zn1−xCdxO allows reduction of the band gap relative to ZnO, which…”
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Donor–acceptor pair transitions in ZnO substrate material by Thonke, K., Gruber, Th, Teofilov, N., Schönfelder, R., Waag, A., Sauer, R.

“…We investigate the state-of-the-art ZnO substrate material grown by seeded chemical vapour transport. The low-temperature photoluminescence (PL) spectra are…”
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Magnetoresistance in epitaxially grown degenerate ZnO thin films by Reuss, F., Frank, S., Kirchner, C., Kling, R., Gruber, Th, Waag, A.

“…The magnetoresistance of high-quality epitaxial doped ZnO ( : Ga ) thin films with various electron concentrations ranging from 3.2 × 10 18 to 1.3 × 10 20 cm −…”
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Electron spin manipulation using semimagnetic resonant tunneling diodes by Gruber, Th, Keim, M., Fiederling, R., Reuscher, G., Ossau, W., Schmidt, G., Molenkamp, L. W., Waag, A.

“…One major challenge for the development of spintronic devices is the control of the spin polarization of an electron current. We propose and demonstrate the…”
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Molecular beam epitaxy of high-quality ZnO using hydrogen peroxide as an oxidant by Izyumskaya, N., Avrutin, V., Schoch, W., El-Shaer, A., Reuß, F., Gruber, Th, Waag, A.

“…ZnO layers were grown on (0 0 0 1) GaN/sapphire substrates by molecular beam epitaxy (MBE) with the use of hydrogen peroxide as an oxidant. Single-crystal ZnO…”
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A CHAMP-only gravity field model from kinematic orbits using the energy integral by Gerlach, Ch, Földvary, L., Švehla, D., Gruber, Th, Wermuth, M., Sneeuw, N., Frommknecht, B., Oberndorfer, H., Peters, Th, Rothacher, M., Rummel, R., Steigenberger, P.

“…In this paper we present results of a global gravity field recovery using half a year of CHAMP data. We use the energy integral of the motion of a satellite to…”
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Simulation of the time-variable gravity field by means of coupled geophysical models by Gruber, Th, Bamber, J. L., Bierkens, M. F. P., Dobslaw, H., Murböck, M., Thomas, M., van Beek, L. P. H., van Dam, T., Vermeersen, L. L. A., Visser, P. N. A. M.

“…Time variable gravity fields, reflecting variations of mass distribution in the system Earth is one of the key parameters to understand the changing Earth…”
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MOVPE growth of ZnO using various oxygen precursors by Kirchner, C., Gruber, Th, Reuß, F., Thonke, K., Waag, A., Gießen, Ch, Heuken, M.

“…The II–VI compound semiconductor ZnO is already widely used for various applications such as UV resistive coatings, gas sensors and surface acoustic wave…”
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MOCVD Growth of ZnO for Optoelectronic Applications by Gruber, Th, Kirchner, C., Thonke, K., Sauer, R., Waag, A.

“…In this paper we report on the metal‐organic chemical vapour deposition of ZnO layers. We focus on heteroepitaxial growth on c‐plane Al2O3 and the influence of…”
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ZnO metal–organic vapor phase epitaxy: present state and prospective applications by Waag, A, Gruber, Th, Thonke, K, Sauer, R, Kling, R, Kirchner, C, Ress, H

“…Due to its band gap of 3.3eV and exciton binding energy of 60meV, ZnO is a very interesting candidate for UV optoelectronics. Beyond that, the incorporation of…”
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Comparison of linear and nonlinear optical spectra of various ZnO epitaxial layers and of bulk material obtained by different experimental techniques by Priller, H., Brückner, J., Gruber, Th, Klingshirn, C., Kalt, H., Waag, A., Ko, H. J., Yao, T.

“…We investigate ZnO epitaxial layers grown by MBE (Molecular Beam Epitaxy) and MOVPE (Metal Organic Vapor Phase Epitaxy) techniques. The samples show similar…”
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ZnMgO epilayers and ZnO–ZnMgO quantum wells for optoelectronic applications in the blue and UV spectral region by Gruber, Th, Kirchner, C., Kling, R., Reuss, F., Waag, A.

“…We have investigated the properties of ZnMgO epilayers and ZnO–ZnMgO quantum well structures grown by metalorganic vapor-phase epitaxy. A well-controlled…”
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Validation of GOCE gravity field models by means of orbit residuals and geoid comparisons by Gruber, Th, Visser, P. N. A. M., Ackermann, Ch, Hosse, M.

“…Three GOCE-based gravity field solutions have been computed by ESA’s high-level processing facility and were released to the user community. All models are…”
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Probing the electrostatic potential of charged dislocations in n-GaN and n-ZnO epilayers by transmission electron holography by Mueller, E., Gerthsen, D., Brueckner, P., Scholz, F., Gruber, Th, Waag, A., Abteilung Optoelektronik, Universitaet Ulm, D-89069 Ulm, Abteilung Halbleiterphysik, Universitaet Ulm, D-89069 Ulm, Institut fuer Halbleitertechnik, Universitaet Braunschweig, D-38106 Braunschweig

“…Epitaxial layers frequently contain a high density of threading dislocations, which may exceed values of 10{sup 9} cm{sup -2} for ZnO and GaN. To study the…”
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Origin and consequences of a high stacking fault density in epitaxial ZnO layers by Gerthsen, D., Litvinov, D., Gruber, Th, Kirchner, C., Waag, A.

“…Transmission electron microscopy was applied to study ZnO grown by metalorganic vapor phase epitaxy on Al2O3(0001) substrates. The defect structure of the…”
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MOCVD Growth of ZnO on Different Substrate Materials by Gruber, Th, Kirchner, C., Waag, A.

“…ZnO layers have been grown by metal‐organic chemical vapor deposition using diethylzinc and iso‐propanol. Heteroepitaxial growth on c‐plane sapphire and GaN…”
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Temperature-dependent exciton polariton photoluminescence in ZnO films by Toropov, A. A., Nekrutkina, O. V., Shubina, T. V., Gruber, Th, Kirchner, C., Waag, A., Karlsson, K. F., Holtz, P. O., Monemar, B.

“…The polarized photoluminescence (PL) in a (0001) oriented ZnO epitaxial film is studied in the temperature range 4.5-250 K. We report the evidence of exciton…”
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Simulation of oceanic bottom pressure for gravity space missions by Wünsch, J., Thomas, M., Gruber, Th

“…Oceanic bottom pressure is affected by mass redistribution in the ocean and atmosphere, and it influences gravity field determinations by the new satellite…”
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A CHAMP-only gravity field model from kinematic orbits using the energy integral by GERLACH, Ch, FÖLDVARY, L, RUMMEL, R, STEIGENBERGER, P, SVEHLA, D, GRUBER, Th, WERMUTH, M, SNEEUW, N, FROMMKNECHT, B, DBERNDORFER, H, PETERS, Th, ROTHACHER, M

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Temperature-dependent polarized luminescence of exciton polaritons in a ZnO film by Toropov, A. A., Nekrutkina, O. V., Shubina, T. V., Gruber, Th, Kirchner, C., Waag, A., Karlsson, K. F., Monemar, B.

“…We report on the studies of linearly polarized photoluminescence (PL) in a (0001) oriented ZnO epitaxial film, grown by metal organic chemical vapor deposition…”
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