Thin Film Technology, Karlsruhe Institute of Technology

The morphology during film drying will be investigated for a better understanding of film formation and in order to determine the relevant thermodynamic parameters. The final morphology depends not only on material and blend ratio, but also on the deposition technique and drying time. The systematic investigation of the drying behavior will be correlated with the resulting macroscopic optoelectronic properties and a detailed structural investigation using X-ray diffraction (XRD) and Atomic Force Microscopy (AFM) in an interdisciplinary collaboration with the project partners.

People involved:
Felix Buss, Benjamin Schmidt-Hansberg, Prof. Wilhelm Schabel

Homepage:
www.tvt.uni-karlsruhe.de

Published Results:

M. Sanyal, B. Schmidt-Hansberg, M. F. G. Klein, C. Munuera, A. Vorobiev, A. Colsmann, P. Scharfer, U. Lemmer, W. Schabel, H. Dosch, E. Barrena
"Effect of Photovoltaic Polymer/Fullerene Blend Composition Ratio on Microstructure Evolution during Film Solidification Investigated in Real Time by X-ray Diffraction" Macromolecules 44, 3795--3800 (2011)

M. Sanyal, B. Schmidt-Hansberg, M. F. G. Klein, A. Colsmann, C. Munuera, A. Vorobiev, U. Lemmer, W. Schabel, H. Dosch, E. Barrena "In Situ X-Ray Study of Drying-Temperature Influence on the Structural Evolution of Bulk-Heterojunction Polymer–Fullerene Solar Cells Processed by Doctor-Blading" Advanced Energy Materials 1, 363--367 (2011)

B. Schmidt-Hansberg, M. Baunach, J. Krenn, S. Walheim, U. Lemmer, P. Scharfer, W. Schabel "Spatially resolved drying kinetics of multi-component solution cast films for organic electronics" Chemical Engineering and Processing 50, 509-515 (2011)

B. Schmidt-Hansberg, M. F. G. Klein, K. Peters, F. Buss, J. Pfeifer, S. Walheim, A. Colsmann, U. Lemmer, P. Scharfer, W. Schabel "In-situ monitoring the drying kinetics of knife coated polymer-fullerene films for organic solar cells" Journal of Applied Physics 106, 124501 (2009)

Feature article in Virtual Journal of Nanoscale Science & Technology 21, 1 (2010)

H. Do, M. Reinhard, H. Vogeler, A. Pütz, M. F. G. Klein, W. Schabel, A. Colsmann, U. Lemmer
"Polymeric anodes from PEDOT:PSS for 3.5% efficient organic solar cells“, Thin Solid Films 517, 5900 (2009).

B. Schmidt-Hansberg, H. Do, A. Colsmann, U. Lemmer, W. Schabel,
"Drying of thin film polymer solar cells", European Physical Journal Special Topics (2009) 166 , 49-53.