Dr. Jasper J. Michels


Curriculum Vitae

Jasper Michels studied Chemistry at the University of Amsterdam. He graduated in Organic Chemistry in 1995 at the group of Prof. W. N. Speckamp and Prof. H. Hiemstra. After a brief position at DSM Resins in Zwolle he commenced his doctoral work at the University of Twente in 1996 at the Supramolecular Chemistry and Technology group of Prof. D. N. Reinhoudt, where he received his PhD degree in 2001. After his graduation he held a post-doctoral research position for two years at the group of Prof. H. L. Anderson at Oxford University. His work at Oxford was consecutively funded by the English Engineering and Physical Sciences Research Council (EPSRC), and though an Individual Marie Curie Fellowship (EU). In 2003 he accepted a position as Research Scientist at TNO Science and Industry in Eindhoven, and joined Holst Centre in 2006 in the role of Senior Scientist. Between 2006 and 2016 he has been member and vice-chairman of the advisory board of the Self-Healing Materials Network in The Netherlands. In September 2014 he joined the Department of Molecular Electronics of the Max Planck Institute for Polymer Research as a Group Leader.


Research Interest

My group seeks the overlap between soft matter dynamics and thin-film organic electronics. Polymeric semiconductors comprise a family of conjugated, and hence usually semiflexible and often semicrystalline, macromolecules that find application in thin-film devices such as organic light-emitting diodes, solar cells and memory diodes. The films are processed from solution using a coating method, such as spin- or wirebar coating. During solvent evaporation and subsequent annealing phase transitions may occur, especially in case of blend systems. Using a combination of experimental and theoretical approaches his group aims at gaining profound understanding on the coupling between material properties, processing conditions, morphological features and ultimately device performance. Besides, my group is active in the synthesis of conjugated small molecules and polymers for organic electronics applications. We currently have a special focus on the synthesis of novel emitters that exhibit thermally activated delayed fluorescence.



Max Planck Institute for Polymer Research

Ackermannweg 10

D-55128 Mainz, Germany

(+49) 6131-379-607


Electronic Soft Matter Group

Publications in peer-reviewed journals


60. Predictive Modelling of Structure Formation in Semiconductor Films Produced by Meniscus-Guided Coating J. J. Michels*, K. Zhang, P. Wucher, P. M. Beaujuge, W. Pisula, T. Marszalek, Nat. Mater. 2020, DOI: 10.1038/s41563-020-0760-2


59. Ink Formulation for Printed Organic Electronics: Investigating Effects of Aggregation on Structure and Rheology of Functional Inks Based on Conjugated Polymers in Mixed Solvents S. Schlisske, C. Rosenauer, T. Rödlmeier, K. Giringer, J. J. Michels, K. Kremer, U. Lemmer, S. Morsbach, K. Ch. Daoulas ,G. Hernandez‐Sosa, Adv. Mater. Techn. 2020, 2000335


58. Trap-Assisted Triplet Emission in Ladder-Polymer-Based Light-Emitting Diodes E. Khodabakhshi, C. Ramanan, J. J. Michels, S. Bonus, D. Hertel, K. Meerholz, M. Forster, U. Scherf, P. W. M. Blom, Adv. Electron. Mater 2020, 6, 2000082


57. Green and stable processing of organic light-emitting diodes from aqueous nanodispersions A. H. Ribeiro, A. Fakih, B. van der Zee, L. Veith, G. Glaser, A. Kunz, K. Landfester, P. W. M. Blom, J. J. Michels*, J. Mater. Chem. C 2020, 8, 6528


56. Hierarchically Structured Porous Piezoelectric Polymer Nanofibers for Energy Harvesting, M. M. Abolhasani, M. Naebe, M. H. Amiri, K. Shirvanimoghaddam, S. Anwar, J. J. Michels, K. Asada, Adv. Sci 2020, https://doi.org/10.1002/advs.202000517


55. Exploring Disordered Morphologies of Blends and Block Copolymers for Light-Emitting Diodes with Mesoscopic Simulations, J. Zhang, K. Kremer, J. J. Michels*, K. Ch. Daoulas*, Macromolecules 2020, doi:10.1021/acs.macromol.9b02402


54. Electron Trapping in Conjugated Polymers, D. Abbaszadeh, A. Kunz, N. B. Kotadiya, A. Mondal, D. Andrienko, J. J. Michels, G. A. H. Wetzelaer, P. W. M. Blom, Chem. Mater. 2019, 31, 6380


53. Thermodynamic approach to tailor porosity in piezoelectric polymer fibers for application in nanogenerators, M. M. Abolhsani, M. Naebe, K. Shirvanimoghaddam, H. Fashandi, H. Khayyam, M. A. Joordens, A. Pipertzis, S. Anwar, R. Berger, G. Floudas, J. J. Michels, K. Asadi, Nano Energy 2019, 62, 594


52. Synthesis of Precision Poly(1,3-adamantylene alkylene)s via Acyclic Diene Metathesis Polycondensation, J. Friebel, C. P. Ender, M. Mezger, J. J. Michels, M. Wagner, K. B. Wagener, T. Weil, Macromolecules 2019, 52, 4483


51. Suppression of electron trapping by quantum dot emitters using a grafted polystyrene shell, E Khodabakhshi, B. Kloeckner, R. Zentel, J. J. Michels, P. W. M. Blom, Mater. Horiz. 2019, DOI: 10.1039/C9MH00551J


50. Efficiency enhancement of polyfluorene:polystyrene blend light emitting diodes by simultaneous trap dilution and β-phase formation E. Khodabakhshi, P. W. M. Blom, J. J. Michels*, Appl. Phys. Lett. 2019, 114, 093301


49. Full Quantification of the Light-Mediated Gilch Polymerization A.K. Schoenbein, J. Kind, C. N. Thiele, J. J. Michels*, Macromolecules 2018, 51, 4678 


48. Study of the morphology of organic ferroelectric diodes with combined scanning force and scanning transmission X-ray microscopy  L. Bernard, V. Khikhlovskyi, A. J. J. M. van Breemen, J. J. Michels, R. A. J. Janssen, M. Kemerink, G. Gelinck ,N. Pilet, Org. Electron. 2018, 53, 242


47. Solubility and Charge Transport in Blends of Poly-dialkoxy-p-phenylene Vinylene and UV-Cross-Linkable Matrices C. Kasparek, R. Rohloff, J. J. Michels, N. I. Crăciun, J. Wildeman, P. W. M. Blom, Adv. Electron. Mater. 2017, 3, 1600519


46. Sub-Micrometer Structure Formation during Spin Coating Revealed by Time-Resolved In Situ Laser and X-Ray Scattering J. J. van Franeker, D. Hermida-Merino, C. Gommes, K. Arapov, J. J. Michels, R. A. J. Janssen, G. Portale, Adv. Funct. Mater. 2017, 27, 1702516


45. Processing of ferroelectric polymers formicroelectronics: from morphological analysis to functional devices H. Sharifi Dehsari, J. J. Michels*, K. Asadi, J. Mater. Chem. C 2017, 5, 10490


44. Lifetime limitations in organic electronic devices due to metal electrochemical migration R. Abbel, L. van de Peppel, G. Kirchner J. J. Michels*, P. Groen, MRS Commun. 2017, 7, 664


43. Origin of fullerene-induced vitrification of fullerene:donor polymer photovoltaic blends and its impact on solar cell performance P. Westacott, N. D. treat, J. Martin, J. H. Bannock, J. C. de Mello, M. Chabinyc, A. B. Sieval, J. J. Michels*, N. Stingelin, J. Mater. Chem. A 2017, 5, 2689


42. Dynamic Surface Enrichment in Drying Thin-Film Binary Polymer Solutions C. Schaefer, J. J. Michels, P. van der Schoot, Macromolecules 2017, 50, 5914


41. Quantifying the Kinetics of the Gilch Polymerization toward Alkoxy-Substituted Poly(pphenylene vinylene) A.K. Schoenbein, M. wagner, P. W. M. Blom, J. J. Michels*, Macromolecules 2017, 50, 4952


40. Charge carrier trapping controlled by polymer blend phase dynamics A. Kunz, P. W. M. Blom, J. J. Michels*, J. Mater. Chem. C 2017, 5, 3042


39. Visualization of trap dilution in polyfluorene based light-emitting diodes E. Khodabakhshi, J. J. Michels*, P. W. M. Blom, AIP Adv. 2016, 7, 075209


38. Piezoelectricity enhancement of P(VDF/TrFE) by X-ray irradiation N. Pilet, V. Khikhlovskyi, A. J. J. M. van Breemen, J. J. Michels, M. Kemerink, G. Gelinck, P. Warnicke, L. Bernard, Org. Electron. 2016, 37, 257


37. Structuring of Thin-Film Polymer Mixtures Upon Solvent Evaporation C. Schaefer, J. J. Michels, P. van der Schoot, Macromolecules 2016, 49, 6858


36. Elimination of charge carrier trapping in diluted semiconductors D. Abbaszadeh, A. Kunz, G. A. H. Wetzelaer, J. J. Michels, N. I. Crăciun, K. Koynov, I. Lieberwirth, P. W. M. Blom, Nat. Mater. 2016, 15, 628.


35. Electro-deposition as a repair method for embedded metal grids A. J. Oostra, A. Reddy, E. C. P. Smits, R. Abbel, W. A. Groen, P. W. M. Blom, J. J. Michels*, Thin Solid Films 2016, 603, 202


34. 3D-Morphology reconstruction of nanoscale phase-separation in polymer memory blends V. 1. Khikhlovskyi, A. J. J. M. van Breemen, J. J. Michels, R. A. J. Janssen, G. H. Gelinck, M. Kemerink, J. Polym. Sci. Part B: Polym. Phys. 2015, 53, 1231


33. Solution processing of polymer semiconductor:insulator blends—tailored optical properties through liquid–Liquid phase separation control C. Hellmann, N. D. Treat, A. D. Scaccabarozzi, J. R. Hollis, F. D. Fleischli, J. H. Bannock, J. de Mello, J. J. Michels, J. –S. Kim, N. Stingelin, J. Polym. Sci. Part B: Polym. Phys. 2015, 53, 304


32. Narrow conductive structures with high aspect ratios through single-pass inkjet printing and evaporation-induced dewetting R. Abbel, P. Teunissen, J. J. Michels, W. A Groen, Adv. Eng. Mater. 2015, 17, 615


31. On the short circuit resilience of organic solar cells: prediction and validation A. J. Oostra, E. C. P. Smits, D. M. de Leeuw, P. W. M. Blom, J. J. Michels*, Phys. Chem. Chem. Phys. 2015, 17, 21501


30. Structuring of polymer solutions upon solvent evaporation C. Schaefer, P. van der Schoot, J. J. Michels*, Phys. Rev. E 2015, 91, 022602


29. Repair of defects in photoactive layer of organic solar cells A. Jolt Oostra, P. W. M. Blom, J. J. Michels*, Sol. Energy Mat. Sol. Cells 2015, 134, 334


28. Surface directed phase separation of semiconductor ferroelectric polymer blends and their use in non-volatile memories A. J. J. M. van Breemen, T. Zaba, V. Khikhlovskyi, J. J. Michels, R. A. J. Janssen, M. Kemerink, G. H. Gelinck, Adv. Func. Mater. 2014, 25, 278


27. A combined experimental and theoretical study on the side ingress of water into barrier adhesives for organic electronics applications J. J. Michels, M. Peter, A. Salem, B. van Remoortere, J. van den Brand, J. Mater. Chem. C.2014, 2, 5759


26. On the intrinsic moisture permeation rate of remote microwave plasma-deposited silicon nitride layers F. J. H. van Assche, S. Unnikrishnan, J. J. Michels, A. M. B. van Mol, P. van de Weijer, M. C.M. van de Sanden, M. Creatore, Thin Solid Films 2014, 558, 54–61


25. Prevention of short circuits in solution-processed OLED devices A. J. Oostra, P. W. M. Blom, J. J. Michels*, Organic Electronics 2014, 15, 1166


24. Simulation of surface-directed phase separation in a solution-processed polymer/PCBM blend J. J. Michels, E. Moons Macromolecules 2013, 46, 8693


23. Molecular depth profiling of organic photovoltaic heterojunction layers by ToF-SIMS: comparative evaluation of three sputtering beams T. Mouhib, C. Poleunis, N. Wehbe, J. J. Michels, Y. Galagan, L. Houssiau, P. Bertrand, A. Delcorte, Analyst 2013, 138, 6801


22. Disruption of the electrical conductivity of highly conductive poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) by hypochlorite A. J. Oostra, K. H. W. van den Bos, P. W. M. Blom, J. J. Michels, J. Phys. Chem. B 2013, 117, 10929


21. Predicting morphologies of solution processed polymer:fullerene blends S. Kouijzer, J. J. Michels, M. van den Berg, V. S. Gevaerts, M. Turbiez, M. M. Wienk, R. A. J. Janssen, J. Am. Chem. Soc. 2013, 135, 12057


20. Ferroelectric phase diagram of PVDF:PMMA M. Li, N. Stingelin, J. J. Michels, M. –J. Spijkman, K. Asadi, K. Feldman, P. W. M. Blom, D. M. de Leeuw, Adv. Funct. Mater. 2012, 45, 7477.


19. Active control of evaporative solution deposition by modulated infrared illumination J. A. Vieyra Salas, J. M. van der Veen, J. J. Michels, A. A. Darhuber, J. Chem. Phys. C 2012, 116, 12038


18. Processing and low voltage switching of organic ferroelectric phase-separated bistable diodes M. Li, N. Stingelin, J. J. Michels, M. –J. Spijkman, K. Asadi, R. Beerends, F. Biscarini, P. W. M. Blom, D. M. de Leeuw, Adv. Funct. Mater. 2012, 22, 2750


17. Investigation of non-halogenated solvent mixtures for high throughput fabrication of polymer-fullerene solar cells B. Schmidt-Hansberg, M. Sanyal, N. Grossiord, Y. Galagan, M. Baunach, M. F. G. Klein, A. Colsmann, P. Scharfer, U. Lemmer, H. Dosch, J. J. Michels, E. Barrena, W. Schabel,  Sol. En. Mater. Sol. Cells 2012, 96, 195


16. Liquid phase demixing in ferroelectric/semiconducting polymer blends: An experimental and theoretical study J. J. Michels, A. J. J. M. van Breemen, K. Usman, G. H. Gelinck, J. Polym. Sci. Part B: Polym. Phys. 2011, 49, 1255


15. Surface-directed spinodal decomposition of solvent-quenched organic transistor blends J. J. Michels, ChemPhysChem 2011, 12, 342


14. Process optimization of gravure printed light-emitting polymer layers by a neural network approach J. J. Michels, S. H. P. M. de Winter, L. H. G. Symonds, Org. Electron. 2009, 10, 1495


13. P-262: Printing Technologies for Flexible OLEDs M. Tijdink, S. H. P. M. de Winter, P. Kruijt, J. J. Michels, J. S. Wilson, S. Harkema, M. Hack, A. op't Hoog, D. Bollen, SID Symposium Digest of Technical Papers 2008, 39


12. Control of rapid formation of interchain excited states in sugar-threaded supramolecular wires A. Petrozza, S. Brovelli, J. J. Michels, H. L. Anderson, R. H. Friend, C. Silva, F. Cacialli, Adv. Mater. 2008, 20, 3218


11. Supramolecular complexes of conjugated polyelectrolytes with poly(ethylene oxide): multifunctional luminescent semiconductors exhibiting electronic and ionic transport J. S. Wilson, M. J. Frampton, J. J. Michels, L. Sardone, G. Marletta, R. H. Friend, P. Samorì, H. L. Anderson, F. Cacialli, Adv. Mater. 2005, 17, 2659


10. Synthesis of poly(para-phenylenevinylene) rotaxanes by aqueous Suzuki coupling J. Terao, A. Tang, J. J. Michels, A. Krivokapic, H. L. Anderson, Chem. Commun. 2004, 56


9. Synthesis of conjugated polyrotaxanes J. J. Michels, M. J. O'Connell, P. N. Taylor, J. S. Wilson, F. Cacialli, H. L. Anderson, Chem. Eur. J. 2003; 9, 6167


8. Cyclodextrin-threaded conjugated polyrotaxanes as insulated molecular wires with reduced interstrand interactions F. Cacialli, J. S. Wilson, J. J. Michels, C. Daniel, C. Silva, R. H. Friend, N. Severin, P. Samorì, J. P. Rabe, M. J. O'Connell, P. N. Taylor, H. L. Anderson, Nat. Mater. 2002, 1, 160