Organic and Nanoelectronics

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Organic and Nanoelectronics
Group leader
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Organic and Nanoelectronics
Specific themes and goals

The group of Prof. Veit Wagner develops new materials for electronic applications. Through tailored chemical synthesis, we manipulate the basic building blocks of matter or use nano-structuring methods and proper combination of different functional layer to develop materials with new functionalities. For example, we develop are organic solar cells with a nanoscale materials mixture (bulk heterostructure) for improved performance; metal-oxide transistors with potential for flat-panel display applications; and two-dimensional materials such as MoS₂ for hydrogen evolution reaction or for low-power transistors. Through nanoscale materials manufacturing, we can build improved barrier layers to hinder water diffusion or build flexible transparent electrical contacts via carbon nanotube (CNT) or silver nanowire (Ag-nw) networks. 

Typically, we wet-chemically deposit the materials, which is a low-cost process and is scalable to large areas. Specifically, we apply spin-coating, doctor-blading or spray pyrolysis. These labscale approaches are a stepping stone towards high-volume printing machine manufacturing. For example, we can use a newspaper printing machine with “electronic inks” can to produce large area or large volume electronics.

Highlights and impact

Organic and Nanoelectronics group activities and results include:

  • two-dimensional material growth on liquid surfaces
  • the development of optimized water-splitting electrodes
  • a spray deposition process, which we monitoredclarified with high-speed cameras monitoring and the development developed of a three-dimension scenario analysis that uses automated recognition and machine learning.
  • flexible organic electronics
Group composition & projects/funding

The organic and nanoelectronics group consisted of four PhD students and two postdoctoral researchers, and was funded through DFG, private foundations, and industrial cooperation projects.

Selected publications
  • Rutkowska, C.J. Schürmann, V. Wagner, N. Kuhnert, P.J. Kulesza, W.M. Nau, U. Kortz U. Discrete, Cationic Palladium(II)-Oxo Clusters via f-Metal Ion Incorporation and their Macrocyclic Host-Guest Interactions with Sulfonatocalixarenes. Angewandte Chemie - International Edition 61(25). 2022. 
  • Nisar, T. Balster, A. Haider, U. Kortz, V. Wagner. Growth of ultra-thin large sized 2D flakes at air-liquid interface to obtain 2D-WS2 monolayers. Journal of Physics D: Applied Physics 54(6). 2021. 
  • J. Köhling, V. Wagner. High speed picoliter droplet top-view analysis for advancing and receding contact angles, boiling regimes and droplet-droplet interaction. International Journal of Heat and Mass Transfer 169. 2021. 
  • J. Köhling, V. Jovanov, N. Kalinovich, G.V. Röschenthaler, V. Wagner. Tailored -diketones as effective surface passivation for solution processed zinc oxide thin film transistors. Organic Electronics 86. 2020. 
  • A. Tamang, R. Parsons, U. Palanchoke, H. Stiebig, V. Wagner, A. Salleo, D. Knipp. Color Sensing by Optical Antennas: Approaching the Quantum Efficiency Limit. ACS Photonics 6(8). 2019.