Slawomir Braun, Ph.D.

Email: slawomir.braun at liu.se
Telephone: +46 (0)13 28 6874
Office: Fysikhuset N308




 

Background

Slawomir Braun born in Wiecbork, Poland. Studied technical physics at University of Technology and Life Sciences in Bydgoszcz, Poland. As an exchange student within European Union (EU) programme: Erasmus-Socrates, he wrote his undergraduate thesis in the Applied Optics group at Linköping University. In 2007, he received his Ph.D.degree in the group of Prof. William Salaneck at Linkoping University, Sweden. He is currently post-doc in the group of Prof. Mats Fahlman. His current interests are focused on the organic-organic interfaces and interfacial engineering for optimization of organic electronic devices. He has an extensive experience in the industrial colaboration through the R&D projects with Agfa Geavert, DuPont, Merck Chemicals, Ciba (BASF) and Cambridge Display Technology Ltd.

Research

- Energy level alignment at organic interfaces (e.g. donor-acceptor interfaces)
- Integer charge transfer (ICT) model
- Interfacial engineering for optimization of organic electronic devices e.g. organic light-emitting diodes   (OLEDs), organic field effect transistors (OFETs) , organic solar cells etc.
- Hole and electron injection barriers and their optimization
- Doping of organic semiconductor thin films
- Analysis of chemical surface composition
- Surface coatings
- Quantum chemical calculations
- X-ray/ultraviolet photoelectron spectroscopy (XPS, UPS)
 

Publications

The publication list with citation metrics can be found also here

Articles in press:

• Spontaneous charge transfer and dipole formation at the interface between P3HT and PCBM, H. Aarnio , M. Nyman , P. Sehati , S. Braun , M. Fahlma, R. Österbacka, Nature Materials (2011) in press.

• Optimization of the Conducting Polymer Poly(3,4-Ethylenedioxythiophene) for Thermoelectricity, O. Bubnova, Z. U. Khan, A. Malti, S. Braun, M. Fahlman, M. Berggren, X. Crispin, Nature Materials (2011) in press.
• Local surface potential of pi-conjugated nanostructures by Kelvin Probe Force Microscopy: effect of the sampling depth, A. Liscio, V. Palermo, O. Fenwick, S. Braun, M. Fahlman, F. Cacialli, P. Samori, Small (2011) in press.
  
• Energy level alignment at metal-organic and organic-organic interfaces in bulk heterojunction solar cells, P. Sehati, S. Braun, L. Lindell, X. Liu, L. M. Andersson and M. Fahlman, IEEE (2010) in press.

• Ultra-fast charge transfer in organic electronic materials and at hybrid interfaces studied using the core-hole clock technique, R. Friedlein, S. Braun, M. P. de Jong, W osikowicz, M. Fahlman and W.R. Salaneck, J. Elec. Spec. Rel. Phen. 183 (2011) 101.

Review articles:

• Energy level alignment at organic-metal and organic-organic interfaces
  S. Braun, William R. Salaneck and M Fahlman, Advanced Materials, 21 (2009) 1450.
  [Abstract] [Cit.34]

Articles on energy level alignment at organic-organic interfaces:

• Fermi level equilibrium at donor-acceptor interfaces in multi-layered thin film stack of TTF and TCNQ
  S. Braun, X. Liu, W. R. Salaneck and M. Fahlman, Organic Electronics 11 (2010) 212 [Abstract] 
• Energy level alignment regimes at hybrid organic-organic and inorganic-organic interfaces  S. Braun, W. Osikowicz, Y. Wang and W. R. Salaneck, Organic Electronics 8 (2007) 14
  [Abstract ] [cit.40] [in top 10 cited in Organic Electronics]
• Influence of the electrode work function on the energy level alignment at organic-organic interfaces
  S. Braun, M. P. de Jong, W. Osikowicz and W. R. Salaneck, APL 91 (2007) 202108
  [Abstract] [cit.11]
• Tuning of interfacial electronic properties of pentacene using a self-assembled monolayer of C{60} molecules
  X. Liu, Y. Zhan, S. Braun, F. Li, M. Fahlman, Phys. Rev. B 80 (2009) 115401
• Fermi level pinning at interfaces with tetrafluorotetracyanoquinodimethane (F4-TCNQ): The role of integer charge transfer states
  S. Braun and W. R. Salaneck, Chem. Phys. Lett. 438 (2007) 259
  [Abstract] [Cit.20]

Other articles (properties of organic materials)

• Tuning the energy levels of photochromic diarylethene compounds for optoelectronic switch devices
  F.L.E. Jakobsson, P. Marsal, S. Braun, X. Crispin, J. Cornil, M. Fahlman, M. Berggren, J. Phys. Chem. C, 113 (2009) 18396
• Studies of Materials and Interfaces for Organic Electronics
  Doctoral thesis, Linköping studies in science and technology. Dissertations, ISSN 0345-7524 ; 1103
• Ultraviolet light–ozone treatment of poly(3,4-ethylenedioxy-thiophene)-based materials resulting in increased work functions
  C. Tengstedt, A. Kanciurzewska, M. P. de Jong, S. Braun, W. R. Salaneck and M. Fahlman, Thin Solid Films, 515 (2006) 2085. [Cit.12]
• Energetics at Au top and bottom contacts on conjugated polymers
  W. Osikowicz, M. P. de Jong, S. Braun, C. Tengstedt, M. Fahlman and W. R. Salaneck, Appl. Phys. Lett. 88 (2006) 193504. [Cit.15]
• Enhancement of Iridium-based organic light-emitting diodes by spatial doping of the hole transport layer
  Y.Wang, W. Gao, S. Braun, W. R. Salaneck, F. Amy, C. Chan, A. Kahn, Appl. Phys. Lett. 87, 193501 (2005). [Cit.2]
• Photoelectron spectroscopy of materials for organic electronics, Licentiate thesis, Linköping studies in science and technology, ISSN 0280-7971 ; 1239.
• Solution-processed, highly-oriented nanocolumns of functionalized porphyrins with extended electronic states
  R. Friedlein, F. von Kieseritzky, S. Braun, Ch. Linde, W. Osikowicz, J. Hellberg, W. R. Salaneck, Chem. Commun. 15 (2005) 1974
• Surface-induced vertical alignment of self-assembled supramolecular columns of large polycyclic aromatic hydrocarbons and porphyrins 
  R. Friedlein, X. Crispin, W. Osikowicz, S. Braun, M. P. de Jong, C. D. Simpson, M. D. Watson, F. von Kieseritzky, P. Samorí, S. K. M. Jönsson, M. Fahlman, F. Jäckel, J. P. Rabe, J. Hellberg, K. Müllen, W. R. Salaneck, Synth. Metals, 147 (2004) 79
   
• Core excitations of napthalene: Vibrational structure versus chemiacal shifts
  Minkov, F. Gel’mukhanov, R. Friedlein, W. Osikowicz, C. Suess, G. Örhwall, S. L. Sorensen, S. Braun, R. Murday, W. R. Salaneck, H. Ågren, J. Chem. Phys. 121 (2004) 5733
   
• Light induced damage in poly(3,4 ethylenedioxythiophene) and its derivatives studied by photoelectron spectroscopy
  S. Marciniak*, X. Crispin, K. Uvdal, M. Trzcinski, J. Birgerson, L. Groenendaal, F. Louwet, W. R. Salaneck, Synth. Met. 141 (2004) 67. [Cit.12]
• Conductivity, Morphology, Interfacial Chemistry, and Stability of Poly(3,4-ethylene dioxythiophene)–Poly(styrenesulfonate): A Photoelectron Spectroscopy Study
  X. Crispin, S. Marciniak*, W. Osikowicz, G. Zotti, A. W. Denier Van Der Gon, F. Louwet, M. Fahlman, L. Groenendaal, F. De Schryver, W. R. Salaneck, J. Pol. Sci. B 41 (2003) 2561. [Abstract] [Cit.110]
• Electronic structure of highly ordered films of self-assembled graphitic nanocolumns, R. Friedlein, X Crispin, C. D. Simpson, M.D. Warson, F. Jäckel, W. Osikowicz, S. Marciniak*, M. P. de Jong, P. Samori, S. K. M. Jönsson, M. Fahlman, K. Mullen, J. P. Rabe, and W. R. Salaneck, Phys. Rev. B 68 (2003) 195414
• Stability of indium tin oxide/polymer interfaces, Crispin, X. Crispin, A.; de Jong, M.P.; Marciniak, S.*; Osikowicz, W.; Jonsson, S.; Fahlman, M.; Kugler, T.; van Ijzendoorn, L.J.; de Voigt, M.J.A.; Salaneck, W.R., Mater. Res. Soc. Symposium Proceedings 747 (2003) 315

Other articles (properties of inorganic materials)

• Structure and Properties of Phosphorus-Carbide Thin Solid Films, A. Furlan, G.K. Gueorguiev, Zs. Czigany, V. Darakchieva, S. Braun, M. R. Correia, H. Högberg, L. Hultman, in manuscript
• The Location and Effects of Si in (Ti1-xSix)Ny Thin Films, A. Flink, J. Sjölén, M. Beckers, T. Larsson, S. Braun, L. Karlsson, and L. Hultman, Journal of Materials Research 24 (2009) 2483
• Synthesis of Phospho-Carbide Thin Films by Magnetron Sputtering A. Furlan, G.K. Gueorguiev, Zs. Czig¿any, H. Högberg, S. Braun, S. Stafström, L. Hultman, Phys. Stat. Sol. (RRL) 4 (2008) 191
• Structure and mechanical properties of arc evaporated Ti-Al-O-N thin films, J. Sjölen, L. Karlsson, S. Braun, R. Murdey, A. Hörling and L. Hultman, Surf. Coat. Tech., 201 (2007) 6392

Patents

• Water dispersible polydioxythiophenes with polymeric acid colloids and a water-miscible organic liquid, US Patent no. 7,338,620; International patent application - WO/2005/090434
• Hole injection electrode, US patent application No. 11/475407

 Conference contributions and Tutorials

• ONE-P summer school, Erice, Italy, 2010
• MRS Fall Meeting, Boston, 2009 - Electronic Processes at Interfaces in Organic Electronic Devices.
• European Conference on Molecular Electronics -ECME 2009, Copenhagen, Denmark, The Integer Charge Transfer Model - Application to Organic-organic Interfaces
• EuroNanoForum 2009 - Nanotechnology for Sustainable Economy, Prague, Czech Republic, 2009
• Charge transfer at interfaces for oragnic electronics, ERPOS 11-Electrical and related properties of organic solids, Piechowice, Poland, 2008
• Influence of the electrode work function on the energy level alignment at organic-organic interfaces, S. Braun, M. Fahlman, W. R. Salaneck, Electronic Structure and Processes at Molecular-based Interfaces - ESPMI IV Princeton University, Princeton, USA, 2008
• Influence of the electrode work function on the energy level alignment at organic-organic interfaces. S. Braun, M. Fahlman, W. R. Salaneck, E-MRS, Strasbourg, France, 2008
• Spontaneous Charge Transfer Across All-organic and Hybrid Molecular Interfaces, S. Braun, ASOMEA IV, Chiba, Japan, 2007
• Charge transfer states at hybrid interfaces, S. Braun, W. Osikowicz, M. P. de Jong, M. Fahlman and W. R. Salaneck, ECME 9, Metz, France, 2007
• All-organic and Hybrid Interfaces: Transition Between Energy Level Alignment Regimes, S. Braun, W. Osikowicz, Y. Wang and W. R. Salaneck, MRS Fall Meeting, Boston, US, 2006
• Interfacial dipole layer formation - integer charge transfer model, W. Osikowicz, S. Braun, M. P. de Jong, M. Fahlman and W. R. Salaneck, E-MRS, Strasbourg, 2007