Ralf Wellmann : rechercher sur Z-Library

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1

SiC single crystal growth by a modified physical vapor transport technique

Peter Wellmann, Patrick Desperrier, Ralf Müller, Thomas Straubinger, Albrecht Winnacker, Francis Baillet, Elisabeth Blanquet, Jean Marc Dedulle, Michel Pons

Journal:

Journal of Crystal Growth

Année:

2005

Langue:

english

Fichier:

PDF, 451 KB

english, 2005

2

Bulk growth of SiC – review on advances of SiC vapor growth for improved doping and systematic study on dislocation evolution

Sakwe Aloysius Sakwe, Mathias Stockmeier, Philip Hens, Ralf Müller, Desirée Queren, Ulrike Kunecke, Katja Konias, Rainer Hock, Andreas Magerl, Michel Pons, Albrecht Winnacker, Peter Wellmann

Journal:

physica status solidi (b)

Année:

2008

Langue:

english

Fichier:

PDF, 1.68 MB

english, 2008

3

In-Situ Er-Doping of SiC Bulk Single Crystals

Müller, Ralf, Desperrier, Patrick, Seitz, Christoph, Weisser, Matthias, Magerl, Andreas, Maier, Manfred, Winnacker, Albrecht, Wellmann, Peter J.

Journal:

Materials Science Forum

Année:

2004

Langue:

english

Fichier:

PDF, 630 KB

english, 2004

4

High Al-Doping of SiC Using a Modified PVT (M-PVT) Growth Set-Up

Müller, Ralf, Künecke, Ulrike, Weingärtner, Roland, Schmitt, Holger, Desperrier, Patrick, Wellmann, Peter J.

Journal:

Materials Science Forum

Année:

2005

Langue:

english

Fichier:

PDF, 521 KB

english, 2005

5

Impact of n-Type versus p-Type Doping on Mechanical Properties and Dislocation Evolution during SiC Crystal Growth

Wellmann, Peter J., Hens, Philip, Sakwe, Sakwe Aloysius, Queren, Desirée, Müller, Ralf, Durst, Karsten, Göken, Matthias

Journal:

Materials Science Forum

Année:

2007

Langue:

english

Fichier:

PDF, 335 KB

english, 2007

6

Results of SIMS, LTPL and Temperature-Dependent Hall Effect Measurements Performed on Al-Doped α-SiC Substrates Grown by the M-PVT Method

Contreras, Sylvie, Zielinski, Marcin, Konczewicz, Leszek, Blanc, Caroline, Juillaguet, Sandrine, Müller, Ralf, Künecke, Ulrike, Wellmann, Peter J., Camassel, Jean

Journal:

Materials Science Forum

Année:

2006

Langue:

english

Fichier:

PDF, 774 KB

english, 2006

7

Modeling and Experimental Verification of SiC M-PVT Bulk Crystal Growth

Wellmann, Peter J., Müller, Ralf, Pons, Michel

Journal:

Materials Science Forum

Année:

2006

Langue:

english

Fichier:

PDF, 264 KB

english, 2006

8

Growth of Phosphorous-Doped n-Type 6H-SiC Crystals using a Modified PVT Technique and Phosphine as Source

Desperrier, Patrick, Müller, Ralf, Winnacker, Albrecht, Wellmann, Peter J.

Journal:

Materials Science Forum

Année:

2004

Langue:

english

Fichier:

PDF, 305 KB

english, 2004

9

Modified Physical Vapor Transport Growth of SiC - Control of Gas Phase Composition for Improved Process Conditions

Wellmann, Peter J., Straubinger, Thomas L., Desperrier, Patrick, Müller, Ralf, Künecke, Ulrike, Sakwe, Sakwe Aloysius, Schmitt, Holger, Winnacker, Albrecht, Blanquet, Elisabeth, Dedulle, Jean Marc, Po

Journal:

Materials Science Forum

Année:

2005

Langue:

english

Fichier:

PDF, 399 KB

english, 2005

10

Resistance to Sterol Demethylation Inhibitors in Ustilago maydis . III. Cross-Resistance Patterns and Sterol Analyses

Wellmann, Heilke, Schauz, Karl, Tiemann, Ralf

Journal:

Pesticide Science

Année:

1996

Langue:

english

Fichier:

PDF, 819 KB

english, 1996

11

S10.2: Time dependent exposure and age effects in Cox regression models – a simulation study

Ingo Langner, Ralf Bender, Jürgen Wellmann

Journal:

Biometrical Journal

Année:

2004

Langue:

english

Fichier:

PDF, 79 KB

english, 2004

12

Growth of graphene layers on HOPG via exposure to methyl radicals

Ralf Wellmann, Artur Böttcher, Manfred Kappes, Ulrich Kohl, Horst Niehus

Journal:

Surface Science

Année:

2003

Langue:

english

Fichier:

PDF, 333 KB

english, 2003

13

Fullerenes: Aspects, prospects, limits and speculations

Frank H. Hennrich, Hans-Jürgen Eisler, Stefan Gilb, Philip Gerhardt, Ralf Wellmann, Robert Schulz, Manfred M. Kappes

Journal:

Berichte der Bunsengesellschaft für physikalische Chemie

Année:

1997

Langue:

english

Fichier:

PDF, 2.01 MB

english, 1997

14

Activation of Wnt signalling in stroma from pancreatic cancer identified by gene expression profiling

Christian Pilarsky, Ole Ammerpohl, Bence Sipos, Edgar Dahl, Arndt Hartmann, Axel Wellmann, Till Braunschweig, Matthias Löhr, Ralf Jesnowski, Helmut Friess, Moritz Nicolas Wente, Glen Kristiansen, Beat

Journal:

Journal of Cellular and Molecular Medicine

Année:

2008

Langue:

english

Fichier:

PDF, 54.08 MB

english, 2008

15

Logistic regression was preferred to estimate risk differences and numbers needed to be exposed adjusted for covariates

Ulrich Gehrmann, Oliver Kuss, Jürgen Wellmann, Ralf Bender

Journal:

Journal of Clinical Epidemiology

Année:

2010

Langue:

english

Fichier:

PDF, 167 KB

english, 2010

16

Reversible modification of the absorption properties of single-walled carbon nanotube thin films via nitric acid exposure

Hennrich, Frank, Wellmann, Ralf, Malik, Sharali, Lebedkin, Sergei, Kappes, Manfred M.

Journal:

Physical Chemistry Chemical Physics

Année:

2003

Langue:

english

Fichier:

PDF, 166 KB

english, 2003

17

Basal Plane Dislocation Dynamics in Highly p-Type Doped versus Highly n-Type Doped SiC

Wellmann, Peter J., Queren, Desirée, Müller, Ralf, Sakwe, Sakwe Aloysius, Künecke, Ulrike

Journal:

Materials Science Forum

Année:

2006

Langue:

english

Fichier:

PDF, 270 KB

english, 2006

18

Photoluminescence Study of In-Situ Rare Earth Doped PVT-Grown SiC Single Crystals

Schmitt, Holger, Müller, Ralf, Maier, Manfred, Winnacker, Albrecht, Wellmann, Peter J.

Journal:

Materials Science Forum

Année:

2005

Langue:

english

Fichier:

PDF, 747 KB

english, 2005

19

Bulk Growth of SiC

Wellmann, Peter, Müller, Ralf P., Sakwe, Sakwe A., Künecke, Ulrike, Hens, Philip, Stockmeier, Mathias, Konias, Katja, Hock, Rainer, Magerl, Andreas, Pons, Michel

Journal:

MRS Proceedings

Année:

2008

Langue:

english

Fichier:

PDF, 1.03 MB

english, 2008

20

Micro-Optical Characterization Study of Highly p-Type Doped SiC:Al Wafers

Wellmann, Peter J., Müller, Ralf, Pons, Michel, Thuaire, Aurelie, Crisci, Alexandre, Mermoux, Michel, Auvray, Laurent

Journal:

Materials Science Forum

Année:

2005

Langue:

english

Fichier:

PDF, 344 KB

english, 2005