Research Output per year
Personal profile
Research profile
Martijn Wienk is an assistant professor at the Molecular Materials and Nanosystems (M2N) group. His research focusses on the optimization and characterization of solution processed hybrid polymer - metal oxide solar cells.
Organic solar cells have the advantage of low cost and easy high-scale production. A fine morphological distribution of two types of materials (electron donor and electron acceptor) within one layer is essential for good device performance. The advantage of hybrid organic solar cells is the stability and controllability of the morphology of the active layer. The morphology of ZnO:polymer hybrid solar cells is for a large part controlled by choosing the hydrophilicity of the polymer. A hydrophobic polymer, P3HT, creates a quite coarse distribution of ZnO within the layer. When this polymer is functionalized with ester functions, increasing the hydrophilicity, the ZnO shows a much finer distribution across the layer. In thin active layers, the finer morphology leads to an enhancement of device performance.
Academic background
Martijn Wienk studied Chemical Engineering at Twente University. He graduated in 1988 on polymer-linked crown ethers in liquid membranes. His MSc research was supervised by professors Ernst Sudhölter and David Reinhoudt. He subsequently performed alternative conscription civil service for the Dutch Cancer Society (Koningin Wilhelmina Fonds, KWF) on the scale-up of the synthesis of heterocyclic chemotherapeutic analogues. In 1992 he started a two-year research education project at Eindhoven University of Technology (TU/e) under supervision of professors René Janssen and E.W. (Bert) Meijer, regarding high-spin molecules based on phosphoryl radicals. This was expanded to a PhD project and his PhD thesis "High-spin molecules of phosphorus and nitrogen-centered radicals" on which he graduated in 1997 with professors Sudhölter, Janssen and Meijer. After a brief postdoctoral position, investigating holographic patterning of liquid crystalline polymers at Philips Natlab (Eindhoven), he joined the Energy research Centre of the Netherlands (ECN, Petten) to work on the application of organic semiconducting materials in thin film solar cells. In 2002 he returned to academia and TU/e, initially as a DPI (Dutch Polymer Institute) fellow, to be appointed assistant professor in 2007.
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Research Output
Controlling the microstructure of conjugated polymers in high-mobility monolayer transistors via the dissolution temperature
Li, M., Bin, H., Jiao, X., Wienk, M. M., Yan, H. & Janssen, R. A. J., 7 Jan 2020, In : Angewandte Chemie - International Edition. 59, 2, p. 846-852 7 p.Research output: Contribution to journal › Article › Academic › peer-review
Open Access
File
2
Citations
(Scopus)
25
Downloads
(Pure)
The effect of alkyl side chain length on the formation of two semi-crystalline phases in low band gap conjugated polymers
Li, M., Leenaers, P. J., Wienk, M. M. & Janssen, R. A. J., 7 May 2020, In : Journal of Materials Chemistry C. 8, 17, p. 5856-5867 12 p.Research output: Contribution to journal › Article › Academic › peer-review
Open Access
Understanding the film formation kinetics of sequential deposited narrow-bandgap Pb–Sn hybrid perovskite films
Wang, J., Datta, K., Li, J., Verheijen, M. A., Zhang, D., Wienk, M. M. & Janssen, R. A. J., 1 Jun 2020, In : Advanced Energy Materials. 10, 22, 9 p., 2000566.Research output: Contribution to journal › Article › Academic › peer-review
Open Access
Effect of charge-transfer state energy on charge generation efficiency via singlet fission in pentacene-fullerene solar cells
Willems, R. E. M., Meskers, S. C. J., Wienk, M. M. & Janssen, R. A. J., 25 Apr 2019, In : Journal of Physical Chemistry C. 123, 16, p. 10253-10261 9 p.Research output: Contribution to journal › Article › Academic › peer-review
Open Access
File
2
Citations
(Scopus)
68
Downloads
(Pure)
Efficient thick-film polymer solar cells with enhanced fill factors via increased fullerene loading
Duan, C., Peng, Z., Colberts, F. J. M., Pang, S., Ye, L., Awartani, O. M., Hendriks, K. H., Ade, H., Wienk, M. M. & Janssen, R. A. J., 20 Mar 2019, In : ACS Applied Materials & Interfaces. 11, 11, p. 10794-10800 7 p.Research output: Contribution to journal › Article › Academic › peer-review
Open Access
File
5
Citations
(Scopus)
45
Downloads
(Pure)
Courses
Impacts
Organic solar cells
René A.J. Janssen (Researcher), Stefan C.J. Meskers (Researcher), Martijn M. Wienk (Researcher)
Impact: Research Topic/Theme (at group level)
Perovskite solar cells
René A.J. Janssen (Researcher), Stefan C.J. Meskers (Researcher), Martijn M. Wienk (Researcher)
Impact: Research Topic/Theme (at group level)
Solar fuels
René A.J. Janssen (Researcher), C.F.J. (Kees) Flipse (Researcher), Martijn M. Wienk (Researcher)
Impact: Research Topic/Theme (at group level)
Student theses
An in-situ study on the effect of co-solvents on polymer solar cell morphology
Author: Adriaans, G., 2014Supervisor: van Franeker, J. (Supervisor 1) & Wienk, M. (Supervisor 2)
Student thesis: Bachelor
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Dimerization studies and catalytic tests of Mn salen complexes: towards mechanochemical catalysis in the epoxidation of olefins
Author: Baeten, E., 30 Jun 2013Supervisor: Balan, A. (Supervisor 1), Sijbesma, R. (Supervisor 2), Hensen, E. (Supervisor 2) & Wienk, M. (Supervisor 2)
Student thesis: Master
Direct conversion of methane to zeolite-templated carbons
Author: Huertas Osta, E., 29 Apr 2020Supervisor: Hensen, E. J. (Supervisor 1), Kosinov, N. A. (Supervisor 2), Wienk, M. M. (Supervisor 2) & Liu, Y. (Supervisor 2)
Student thesis: Master
Directing light of specific points in luminescent solar concentrators: light direction by customized alignment of luminescent dye molecules in a liquid crystal host material
Author: Bruijnaers, B., 31 Mar 2014Supervisor: Schenning, A. (Supervisor 1), Bastiaansen, C. (Supervisor 2), Wienk, M. (Supervisor 2) & Debije, M. (Supervisor 2)
Student thesis: Master
Electroforming of alkali halide-organic semiconductor memory diodes
Author: Wang, J., 30 Nov 2014Supervisor: Meskers, S. (Supervisor 1), Bory, B. (Supervisor 2), Janssen, R. (Supervisor 2), Wienk, M. (Supervisor 2) & Debije, M. (Supervisor 2)
Student thesis: Master
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