News

Announcement

Plasma Day 2019

The next Plasma Day will be on September 30th, 2019. Please mark this date in your calendar.

Guests

Active exchange with international scientists continues at TP4

The very steady exchange between scientists from all over the world with the group around PD Dr. Horst Fichtner continues also at the end of 2019. Moreover, already for 2019, a visit for 2019 is planned.

(1) Between 17.11. and 7.12.2018, Prof. Sean Oughton  from the Univeersity of Waikato, Hamilton, New Zealand visits the group. His research Topic is Turbulence Evolution in the Heliosphere.

(2) Dr. Dieter Nickeler with his research topic hydrodynamical flows in circumstellar environments spends two weeks at Bochum (2.12.-15.12.2018). He is from Astronomický ústav, Akademie věd České republiky, Czek Republic.

(3) Finally, the regular exchange with Prof Yuri Litvinenko from Univeersity of Waikato, Hamilton, New Zealand continues: he visits the group of PD Dr. Fichtner between 5.12. and 19.12.2018 as well as between 8.1. and 25.1.2019. With him, the focus in the scientific exchange is about nonlinear diffusion.

Young researchers activity

Bochumer young researchers at WELTPP-21

The annual workshop on the exploration of low-temperature plasma physics (WELTPP) was held on the 29th & 30th of november for the 21st time in Rolduc, Kerkrade. PhD students from both the SFB TR-87 and the CRC1316 contributed to the program with 6 talks and 9 posters. In addition to the student talks, Erik Neyts from the University of Antwerp gave an invited talk  about the surface charge in plasma catalysis.

Scientific Highlights

Ultra-thin transparent silver layers for solar cells

A new fabrication process for transparent ultra-thin silver films has been developed by researchers at Ruhr-Universität Bochum and the University of Wuppertal. The material may help build highly efficient solar cells and light-emitting diodes. However, traditional chemical methods have not been able to produce ultra-thin and pure silver films. A team headed by Professor Anjana Devi and Nils Boysen from the Bochum-based research group Inorganic Materials Chemistry, in collaboration with the group of Professor Thomas Riedl from the Chair of Electronic Devices in Wuppertal, published an article on a new synthesis method in the journal “Angewandte Chemie”. The article was published online on 27 September 2018.

New precursor chemistry

“Precursors for the fabrication of ultra-thin silver films are highly sensitive to air and light,” explains Nils Boysen. The silver precursors can be stabilised with fluorine, phosphorus or oxygen. “However, these elements contaminate the thin films as well as the equipment used for the production,” continues the researcher. In the course of his Master thesis, Boysen and his colleagues developed an alternative solution to tackle the problems associated with common silver precursors.

The researchers created a chemical silver precursor, where the silver is surrounded by an amide and a carbene, which is even stable without elements like fluorine, phosphorous or oxygen. They demonstrated that a silver thin film can be applied to an electrode with the new precursor by atomic layer deposition. In the process, the gaseous precursor is transported to the electrode and a silver film is deposited there as a layer with a thickness of merely a few atoms. Because it is so thin, the silver film is transparent.

“As the process can be operated under atmospheric pressure and at low temperatures, the conditions for industrial production are quite favourable,” says Anjana Devi.

A chance for highly efficient solar cells and lights

Following a series of tests, the researchers showed that the thin silver films manufactured using this method are pure and electrically conductive. “As far as process technology is concerned, the successful synthesis of the new precursor paves the way for the development of ultra-thin silver films,” concludes Thomas Riedl. “It constitutes a first step towards the production of novel electrodes for highly efficient solar cells and lights.”

“The collaboration between the chemists from Bochum and the engineers from Wuppertal was the key to success,” stresses Anjana Devi.

Research Department Plasmas with Complex Interactions

Plasma Day 2018

On Monday, November 12th, 2018, the Plasma Day of the Research Department Plasmas with Complex Interactions took place. The focus of the Plasma Day was the strategic progress of the Research Department in the future. The spokesperson, Achim von Keudell, spoke about the current situation of the Research Department. Further, representatives of all three topic fields of the Research Department presented their progress and future perspective. Moreover, highlight presentations were given by Jens Kleimann from the physics faculty, Andrew Gibson and Julian Schulze from the electrical engineering department.

 

 

 

 

Conference participation

Poster Prize at the 8th International Workshop on Plasma Spectroscopy in Oxford

The 8th International Workshop on Plasma Spectroscopy was held from the 23-26th of September, 2018 at the Worcester College in Oxford, UK. Volker Schulz- von der Gathen, Patrick Preissing and Katharina Grosse from EP2 contributed with 2 talks and 3 poster presentations. One of two poster prices were won by Patrick Pressing which was announced during the conference dinner. The excursion to Blenheim Palace was a highlight of the conference next to the excellent scientific programme.

Activity for students

Photonik-Akademie at Ruhr-Univesität Bochum and INP Greifswald

From 9 to 14 September, 29 MINT students from Germany and Switzerland were introduced to the application potential of plasma technology. The trip went to the laboratories of the Ruhr University Bochum, the INP Greifswald and the Dortmunder OberflächenCentrum "DOC", to the Fraunhofer IWS project group located there and to Cortronik GmbH in Rostock, an industrial partner. 

This year, the joint academy of the Federal Ministry of Education and Research and the photonics industry was hosted by the Chair of General Electrical Engineering and Plasma Technology of the Ruhr University Bochum and the Leibniz Institute for Plasma Research and Technology e. V. in Greifswald. 

For the students, the schedule was filled to the brim with information and exciting excursions. "I am very grateful for this eventful week," says Academy participant Ediz Herkert, who is studying photonic engineering in the Master's program at the University of Stuttgart. "On the one hand, we got to know the different areas in which plasma technology is used. On the other hand, we had the opportunity to establish contacts with companies and research institutions. The group of participants has also grown into a community during this week. "

Conference Announcement

PT19 in June 2019 in Cottbus

Between 17. 06. and 19. 06. 2019 the traditional plasma technology conference will take place in the premises of BTU in Cottbus.
The conference is organised by project managers in the SFB-TR 87, Prof. Dr. -Ing. Thomas Mussenbrock and Dr. -Ing. Jan Trieschmann from BTU in Cottbus.