Christian Zimmermann

Norwegian version of this page
Email christian.zimmermann@fys.uio.no
Room 3218
Username
Visiting address Gaustadalléen 23A
Postal address Postboks 1048 Blindern 0316 Oslo

Academic interests

I study electrically- and optically-active defects in semiconducting oxides (TiO2, ZnO, Ga2O3) using optical as well as electrical characterisation techniques (Photoluminescence spectroscopy, Impedance Spectroscopy, Deep-level transient Spectroscopy,...). Furthermore, I am involved in extending the experimental techniques available in our research group.

 

Background

2008 - 2015: Bachelor and Master Studies at the Karlsruhe Institute of Technology

 

Tags: SMN, Defects, Oxides, Characterization

Publications

  • Zimmermann, Christian; Frodason, Ymir Kalmann; Barnard, Abraham Willem; Varley, Joel B; Irmscher, Klaus; Galazka, Zbigniew; Karjalainen, Antti; Meyer, Walter Ernst; Auret, F.D. & Vines, Lasse (2020). Ti- and Fe-related charge transition levels in beta-Ga2O3. Applied Physics Letters.  ISSN 0003-6951.  116(7) . doi: 10.1063/1.5139402
  • Zimmermann, Christian; Frodason, Ymir Kalmann; Rønning, Vegard; Varley, Joel B & Vines, Lasse (2020). Combining steady-state photo-capacitance spectra with first-principles calculations: the case of Fe and Ti in β-Ga2O3. New Journal of Physics.  ISSN 1367-2630.  22 . doi: 10.1088/1367-2630/ab8e5b
  • Zimmermann, Christian; Rønning, Vegard; Frodason, Ymir Kalmann; Bobal, Viktor; Varley, Joel B & Vines, Lasse (2020). Primary intrinsic defects and their charge transition levels in beta-Ga2O3. PHYSICAL REVIEW MATERIALS.  ISSN 2475-9953.  4(7) . doi: 10.1103/PhysRevMaterials.4.074605
  • Zimmermann, Christian; Verhoeven, Espen Førdestrøm; Frodason, Ymir Kalmann; Weiser, Philip Michael; Varley, Joel B & Vines, Lasse (2020). Formation and control of the E2* center in implanted b-Ga2O3 by reverse-bias and zero-bias annealing. Journal of Physics D: Applied Physics.  ISSN 0022-3727.  53(46) . doi: 10.1088/1361-6463/aba64d Full text in Research Archive.
  • Bonkerud, Julie; Zimmermann, Christian; Weiser, Philip Michael; Aarholt, Thomas; Verhoeven, Espen Førdestrøm; Vines, Lasse; Monakhov, Eduard & Herklotz, Frank (2020). Fabrication and characterization of Schottky barrier diodes on rutile TiO2. Materials Research Express.  ISSN 2053-1591.  7(6) . doi: 10.1088/2053-1591/ab9777 Full text in Research Archive.
  • Bonkerud, Julie; Zimmermann, Christian; Weiser, Philip Michael; Herklotz, Frank; Seiffert, Christoph; Verhoeven, Espen Førdestrøm; Vines, Lasse & Monakhov, Eduard (2020). Electrically-active defects in reduced and hydrogenated rutile TiO2. Semiconductor Science and Technology.  ISSN 0268-1242. . doi: 10.1088/1361-6641/abc854 Full text in Research Archive.
  • Olsen, Vegard Skiftestad; Baldissera, Gustavo; Zimmermann, Christian; Granerød, Cecilie Skjold; Bazioti, Kalliopi; Galeckas, Augustinas; Svensson, Bengt Gunnar; Kuznetsov, Andrej; Persson, Clas; Prytz, Øystein & Vines, Lasse (2019). Evidence of defect band mechanism responsible for band gap evolution in (ZnO)1−x(GaN)x alloys. Physical review B (PRB).  ISSN 2469-9950.  100(16) . doi: 10.1103/PhysRevB.100.165201 Full text in Research Archive.
  • Zimmermann, Christian; Bonkerud, Julie; Herklotz, Frank; Sky, Thomas Neset; Hupfer, Alexander; Monakhov, Eduard; Svensson, Bengt Gunnar & Vines, Lasse (2018). Influence of annealing atmosphere on formation of electrically-active defects in rutile TiO2. Journal of Applied Physics.  ISSN 0021-8979.  123(16), s 161572-1- 161572-8 . doi: 10.1063/1.5011136 Full text in Research Archive.
  • Lang, Mario; Zimmermann, Christian; Krämmer, Christoph; Renz, Tobias; Huber, Christian; Kalt, Heinz & Hetterich, Michael (2017). Luminescence properties of Cu2ZnSn(S,Se)4 solar cell absorbers: State filling versus screening of electrostatic potential fluctuations. Physical review B (PRB).  ISSN 2469-9950.  95(15) . doi: 10.1103/PhysRevB.95.155202

View all works in Cristin

  • Vines, Lasse; Ingebrigtsen, Mads Eide; Zimmermann, Christian; Rønning, Vegard & Kuznetsov, Andrej (2019). Electrically Active Defects in β-Ga2O3.
  • Grini, Sigbjørn; Borgersen, Jon Arthur; Sky, Thomas Neset; Frodason, Ymir Kalmann; Riise, Heine Nygard & Zimmermann, Christian (2018). Omvisning MENA.

View all works in Cristin

Published June 15, 2016 11:35 AM - Last modified Jan. 31, 2018 12:39 AM

Projects

Research groups