Dr. Oliver Bierwagen

Protection Mechanism against Photocorrosion of GaN Photoanodes Provided by NiO Thin Layers

@article{ author = { Jumpei Kamimura and M. Budde and Peter Bogdanoff and Carsten Tschammer and Fatwa F. Abdi and Roel van de Krol and O. Bierwagen and Henning Riechert and L. Geelhaar }, title = { Protection Mechanism against Photocorrosion of GaN Photoanodes Provided by NiO Thin Layers }, journal = { Solar RRL }, volume = { xxx }, year = { 2020 }, pages = { xxx } }

TY - JOUR AU - Jumpei Kamimura AU - M. Budde AU - Peter Bogdanoff AU - Carsten Tschammer AU - Fatwa F. Abdi AU - Roel van de Krol AU - O. Bierwagen AU - Henning Riechert AU - L. Geelhaar TI - Protection Mechanism against Photocorrosion of GaN Photoanodes Provided by NiO Thin Layers JF - Solar RRL JA - Sol. RRL J1 - xxx VL - xxx SP - xxx PY - 2020/10/21

Influence of Polymorphism on the Electronic Structure of Ga2O3

@article{ author = { J. E. N. Swallow and C. Vorwerk and P. Mazzolini and P. Vogt and O. Bierwagen and A. Karg and M. Eickhoff and J. Schörmann and M. R. Wagner and J. W. Roberts and P. R. Chalker and M. J. Smiles and P. A. E. Murgatroyd and S. A. Razek and Z. W. Lebens-Higgins and L. F. J. Piper and L. A. H. Jones and P. K. Thakur and T.-L. Lee and J. B. Varley and J. Furthmüller and C. Draxl and T. D. Veal and A. Regoutz }, title = { Influence of Polymorphism on the Electronic Structure of Ga2O3 }, journal = { Chemistry of Materials }, volume = { tbd }, year = { 2020 }, pages = { tbd } }

TY - JOUR AU - J. E. N. Swallow AU - C. Vorwerk AU - P. Mazzolini AU - P. Vogt AU - O. Bierwagen AU - A. Karg AU - M. Eickhoff AU - J. Schörmann AU - M. R. Wagner AU - J. W. Roberts AU - P. R. Chalker AU - M. J. Smiles AU - P. A. E. Murgatroyd AU - S. A. Razek AU - Z. W. Lebens-Higgins AU - L. F. J. Piper AU - L. A. H. Jones AU - P. K. Thakur AU - T.-L. Lee AU - J. B. Varley AU - J. Furthmüller AU - C. Draxl AU - T. D. Veal AU - A. Regoutz TI - Influence of Polymorphism on the Electronic Structure of Ga2O3 JF - Chemistry of Materials JA - J1 - VL - tbd SP - tbd PY - 2020/09/02

Conduction Mechanisms in Epitaxial NiO/Graphene Gas Sensors

@article{ author = { S. Niavol and M. Budde and A. Papadogianni and M. Heilmann and H. Milani Moghaddam and C. M. Aldao and G. Ligorio and E. J. W. List-Kratochvil and J. M. J. Lopes and N. Barsan and O. Bierwagen and F. Schipani }, title = { Conduction Mechanisms in Epitaxial NiO/Graphene Gas Sensors }, journal = { Sensors & Actuators B }, volume = { 325 }, year = { 2020 }, pages = { 128797 } }

TY - JOUR AU - S. Niavol AU - M. Budde AU - A. Papadogianni AU - M. Heilmann AU - H. Milani Moghaddam AU - C. M. Aldao AU - G. Ligorio AU - E. J. W. List-Kratochvil AU - J. M. J. Lopes AU - N. Barsan AU - O. Bierwagen AU - F. Schipani TI - Conduction Mechanisms in Epitaxial NiO/Graphene Gas Sensors JF - Sensors & Actuators B JA - Sens. Actuators B Chem. J1 - VL - 325 SP - 128797 PY - 2020/08/24

Two-dimensional electron gas of the In2O3 surface: Enhanced thermopower, electrical transport properties, and reduction by adsorbates or compensating acceptor doping

@article{ author = { A. Papadogianni and J. Rombach and T. Berthold and V. Polyakov and S. Krischok and M. Himmerlich and O. Bierwagen }, title = { Two-dimensional electron gas of the In2O3 surface: Enhanced thermopower, electrical transport properties, and reduction by adsorbates or compensating acceptor doping }, journal = { Physical Review B: Solid State }, volume = { 102 }, year = { 2020 }, pages = { 075301 } }

TY - JOUR AU - A. Papadogianni AU - J. Rombach AU - T. Berthold AU - V. Polyakov AU - S. Krischok AU - M. Himmerlich AU - O. Bierwagen TI - Two-dimensional electron gas of the In2O3 surface: Enhanced thermopower, electrical transport properties, and reduction by adsorbates or compensating acceptor doping JF - Physical Review B: Solid State JA - Phys. Rev. B J1 - VL - 102 SP - 075301 PY - 2020/08/03

Magnetic characteristics of epitaxial NiO films studied by Raman spectroscopy

@article{ author = { J. Feldl and M. Budde and C. Tschammer and O. Bierwagen and M. Ramsteiner }, title = { Magnetic characteristics of epitaxial NiO films studied by Raman spectroscopy }, journal = { Journal of Applied Physics }, volume = { 127 }, year = { 2020 }, pages = { 235105 } }

TY - JOUR AU - J. Feldl AU - M. Budde AU - C. Tschammer AU - O. Bierwagen AU - M. Ramsteiner TI - Magnetic characteristics of epitaxial NiO films studied by Raman spectroscopy JF - Journal of Applied Physics JA - J. Appl. Phys. J1 - JAP VL - 127 SP - 235105 PY - 2020/06/17

Towards smooth (010) β-Ga2O3 films homoepitaxially grown by plasma assisted molecular beam epitaxy: The impact of substrate offcut and metal-to-oxygen flux ratio

@article{ author = { P. Mazzolini and O. Bierwagen }, title = { Towards smooth (010) β-Ga2O3 films homoepitaxially grown by plasma assisted molecular beam epitaxy: The impact of substrate offcut and metal-to-oxygen flux ratio }, journal = { Journal of Physics D: Applied Physics }, volume = { 53 }, year = { 2020 }, pages = { 354003 } }

TY - JOUR AU - P. Mazzolini AU - O. Bierwagen TI - Towards smooth (010) β-Ga2O3 films homoepitaxially grown by plasma assisted molecular beam epitaxy: The impact of substrate offcut and metal-to-oxygen flux ratio JF - Journal of Physics D: Applied Physics JA - J. Phys. D: Appl. Phys. J1 - JPD VL - 53 SP - 354003 PY - 2020/04/30

Gallium Oxide - Plasma-Assisted Molecular Beam Epitaxy 2—Fundamentals of Suboxide-Related Growth Kinetics, Thermodynamics, Catalysis, Polymorphs, and Faceting

@article{ author = { O. Bierwagen and P. Vogt and P. Mazzolini }, title = { Gallium Oxide - Plasma-Assisted Molecular Beam Epitaxy 2—Fundamentals of Suboxide-Related Growth Kinetics, Thermodynamics, Catalysis, Polymorphs, and Faceting }, journal = { Springer Series in Materials Science }, volume = { 293 }, year = { 2020 }, pages = { 95 } }

TY - JOUR AU - O. Bierwagen AU - P. Vogt AU - P. Mazzolini TI - Gallium Oxide - Plasma-Assisted Molecular Beam Epitaxy 2—Fundamentals of Suboxide-Related Growth Kinetics, Thermodynamics, Catalysis, Polymorphs, and Faceting JF - Springer Series in Materials Science JA - J1 - VL - 293 SP - 95 PY - 2020/04/24

Efficient suboxide sources in oxide molecular beam epitaxy using mixed metal + oxide charges: The examples of SnO and Ga2O

@article{ author = { G. Hoffmann and M. Budde and P. Mazzolini and O. Bierwagen }, title = { Efficient suboxide sources in oxide molecular beam epitaxy using mixed metal + oxide charges: The examples of SnO and Ga2O }, journal = { APL Materials }, volume = { 8 }, year = { 2020 }, pages = { 031110 } }

TY - JOUR AU - G. Hoffmann AU - M. Budde AU - P. Mazzolini AU - O. Bierwagen TI - Efficient suboxide sources in oxide molecular beam epitaxy using mixed metal + oxide charges: The examples of SnO and Ga2O JF - APL Materials JA - APL Mater. J1 - APLM VL - 8 SP - 031110 PY - 2020/03/12

Substrate-orientation dependence of β-Ga2O3 (100), (010), (001), and (ˉ201) homoepitaxy by indium-mediated metal-exchange catalyzed molecular beam epitaxy (MEXCAT-MBE)

@article{ author = { P. Mazzolini and A. Falkenstein and C. Wouters and R. Schewski and T. Markurt and Z. Galazka and M. Martin and M. Albrecht and O. Bierwagen }, title = { Substrate-orientation dependence of β-Ga2O3 (100), (010), (001), and (ˉ201) homoepitaxy by indium-mediated metal-exchange catalyzed molecular beam epitaxy (MEXCAT-MBE) }, journal = { APL Materials }, volume = { 8 }, year = { 2020 }, pages = { 011107 } }

TY - JOUR AU - P. Mazzolini AU - A. Falkenstein AU - C. Wouters AU - R. Schewski AU - T. Markurt AU - Z. Galazka AU - M. Martin AU - M. Albrecht AU - O. Bierwagen TI - Substrate-orientation dependence of β-Ga2O3 (100), (010), (001), and (ˉ201) homoepitaxy by indium-mediated metal-exchange catalyzed molecular beam epitaxy (MEXCAT-MBE) JF - APL Materials JA - APL Mater. J1 - APLM VL - 8 SP - 011107 PY - 2020/01/10

Plasma-assisted molecular beam epitaxy of NiO on GaN(00.1)

@article{ author = { M. Budde and T. Remmele and C. Tschammer and J. Feldl and P. Franz and J. Lähnemann and Z. Cheng and M. Hanke and M. Ramsteiner and M. Albrecht and O. Bierwagen }, title = { Plasma-assisted molecular beam epitaxy of NiO on GaN(00.1) }, journal = { Journal of Applied Physics }, volume = { 127 }, year = { 2020 }, pages = { 015306 } }

TY - JOUR AU - M. Budde AU - T. Remmele AU - C. Tschammer AU - J. Feldl AU - P. Franz AU - J. Lähnemann AU - Z. Cheng AU - M. Hanke AU - M. Ramsteiner AU - M. Albrecht AU - O. Bierwagen TI - Plasma-assisted molecular beam epitaxy of NiO on GaN(00.1) JF - Journal of Applied Physics JA - J. Appl. Phys. J1 - JAP VL - 127 SP - 015306 PY - 2020/01/06