Chair News

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The 16th European Conference on Organized Films was held in July 2019 at Université Paris Descartes. Three doctoral students from our chair, Katherina Haase, Cecilia Teixeira da Rocha, and Jakob Zessin joined the conference. And that's not all - Cecilia also gave a talk on the topic of "Coating of smooth ultrathin films for Organic field-effect Transistors". The talk was honored with the "Best Oral Presentation Award" for PhD student talks!

The meetings at the conference were very fruitful in terms of collaborations for the Chair's work. Several attendees were very interested in our work with vibration and solution shearing for ultra-thin and uniform film fabrication. They mentioned setups of their own groups in which our project would be of great utility and we could possibly collaborate with in the future.

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Well done Nara, PhD graduate. We wish you all the best and success on days to come.

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The Chair for Organic Devices joined REWE Team Challange 2019 with two teams. Congratulations to Mike, Roberto, Tianyu, Zhe, Rishi, Cecilia, Xueshan and Felix. You rock!

 

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We are happy to announce the new paper of our PhD student Yichu Zheng on "Exploiting lateral current flow due to doped layers in semiconductor devices having crossbar electrodes". It was published by "Organic Electronics" - Volume 65.

The paper can be found here.

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Congratulations on the new paper to Jakob, Zheng, Nara and Mike. "Threshold Voltage Control in Organic Field-Effect Transistors by Surface Doping with a Fluorinated Alkylsilane" was published by "ACS Applied Materials & Interfaces"

Read more here.

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     We would like to welcome Zhe Zhang as our new PhD student. Zhe is part of our group since 2016      working on his project work and master thesis. During his studies he was already working in the lab      where he could learn a lot form our PhD students. We are happy to have him as a PhD student in a      co-operated project together with the Chair for Molecular Functional Materials of Prof. Feng.

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Our PhD student Nara Shin (Prof. Mannsfeld’s group) won the cfaed INSPIRE Grant and had the opportunity to visit Stanford University in this summer season. Now she would like to share her experience and impressions with us.

Please read below Nara's report about her stay at Standford University.

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Congratulations to Rishi on his new paper. "Alkyl Branching Position in Diketopyrrolopyrrole Polymers: Interplay between Fibrillar Morphology and Crystallinity and Their Effect on Photogeneration and Recombination in Bulk-Heterojunction Solar Cells" was published by "Chemistry of Materials"

To be found here.

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We are happy to announce the new paper published by Advanced Electronic Materials. Congratulations to our PhD students Cecilia, Katherina and Yichu.

 

Read it here.

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From April to June 2017 I had the chance to work for 3 months with the Salleo Research Group at Stanford University. The research visit was financed in part by the cfaed INSPIRE grant and in part by the Graduate Academy through a travel grant for short-term research stays abroad. During my time in the group I was trying to shed light on the charge carrier transport in thin films of semiconducting polymers synthesized as part of the Organic/Polymer Path in collaboration with the Leibniz Institute for Polymer Research.  

The main reason for my visit of the group was the application of charge-modulation spectroscopy to our polymers. This technique has only been established in a few research groups around the world and gives information about the degree of freedom charge carriers have close to the semiconductor/dielectric interface based on the optical absorption of the carriers. The results will help us optimizing the device performance of field-effect transistors.

Furthermore, right next to Stanford University is the Stanford Synchrotron Radiation Lightsource, a Department of Energy user facility for very bright electromagnetic radiation. During my 3 months I was lucky enough to get multiple days and nights at the facility to investigate the film structure of our materials by x-ray scattering techniques. This allows us to correlate the structural and electronic properties of our semiconducting polymers.