Welcome to the MultioptiX Group
Our bachelor students Niklas Fröse and Elias Hänel have successfully completed their bachelor theses.
Niklas: “Untersuchung der Ladungsträgerlebensdauer in Chalkopyritschichten und -solarzellen mittels zeitaufgelöster Photolumineszenz und Kapazitäts-Spannungs Messungen“. (thesis on request)
Elias: “Laserprozessierung zur Herstellung von Masken für Solarzellen“. (thesis on request)
Congratulations, Niklas and Elias!
From 18 - 22 September Tristan Köhler, Jan Lucaßen and Martina Schmid joined the 40th European Photovoltaic Solar Energy Conference (EU PVSEC) in Lisbon with 3 poster presentations. The EU PVSEC is the largest specialised PV conference and the best way to discuss research topics and expand your knowledge in PV. The next EU PVSEC will take place from 23 - 27 Sept 2024 in Vienna, Austria.
We would like to welcome our new bachelor student Elias Hänel. He will join our group until December 2023. Welcome Elias!
Christoph Rath has successfully completed his bachelor thesis on “Tuning Ga-gradient and Na concentration in Cu(In,Ga)Se2 solar cells“. Congratulations, Christoph! (thesis on request)
On Monday 5th June we made an excursion to the Baldeneysee in Essen with the MultioptiX group. The weather was fantastic so that we had a great time on our canoeing tour there. After the 3 hour tour we spent some time at the sea side beach, had lunch and ice cream before we head back home.
We would like to welcome our new students Camillo Hinz (master) and Christoph Rath (bachelor) in our group. In May Niklas Fröse (bachelor) and Mithuran Ketharan (bachelor) will join the group as bachelor students as well. We look forward to working with them!
Samuel Kidane has successfully completed his bachelor thesis on “Herstellung und Charakterisierung von Mikrolinsen für Mikrokonzentratorsolarzellen“. (thesis on request)
Our lovely colleague Heidi Pärschke went into her well-deserved retirement. A great thanks to her support and her loyalty for the MultioptiX team. Before she worked for Prof. Schmid, she already had been working for Prof. Buck and Prof. Mergel for many years. T. Huong Witte-Nguy who is the new assistant of the group will do her best to fill the big gap she left behind.
Julius Kruip has successfully completed his master thesis on “Growth of (Ag,Cu)(In,Ga)Se2 - Absorbers under Band Gap Variation and Characterization with a focus on Raman-Spectroscopy“.
Our dear friend and colleague Klaus Pärschke went into his well-deserved retirement. We thank him very much for the many years he supported the team with his unique technical expertise. Ihab Kardosh and Tristan Köhler try to fill the big gap he left behind.
Editorial on the Research Topic
Advanced opto-electrical modeling of photovoltaic materials and devices
Janez Krc1*, Martina Schmid and Rudi Santbergen
in Frontiers in Photonics
Prof. Dr. Martina Schmid gave a lecture in German on the topic: "Elektrizität von der Sonne – mit Solarzellen der nächsten Generation" as part of the "DIE KLEINE FORM" series of events.
DIE KLEINE FORM offers a pointed and also entertaining insight into the questions and methods of the disciplines taught at the University of Duisburg-Essen.
The recorded lecture can be accessed here: https://www.uni-due.de/kleine-form/schmid.php
New virtual lab tour videos were published:
Get a unique sneak peek into our research laboratories and characterization methods!
Yong Li's publication has been accepted.
"Bifacial semi-transparent ultra-thin Cu(In,Ga)Se2 solar cells on ITO substrate: How ITO thickness and Na doping influence the performance"
Julius Kruip has successfully completed his bachelor thesis on “Bifaziale und winkelabhängige elektrische Charakterisierung von semitransparenten CIGSe-Ultradünnschicht-Solarzellen ohne und mit Nanopartikeln“.
Camillo Hinz has successfully completed his bachelor thesis on “Die optische Charakterisierung von semitransparenten Solarzellen mit integrierten Nanostrukturen“. (thesis on request)
Summer semester 2021
End of lectures
Yong Li's publication has been accepted.
"Sodium control in Ultrathin Cu(In,Ga)Se2 solar cells on transparent back contact for efﬁciencies beyond 12%"
Jan Lucaßen has successfully completed his master thesis on “Implementation of a CV-Measurement and Analysis Routine for Solar Cells“.
Lukas Schneider has successfully completed his bachelor thesis on “Inkjet printing of CIGSe absorber islands“.
Erika Gutiérrez has successfully completed her 2-month internship on the topic “Fabrication and characterization of AIGS absorber layer”
Henrik Mantke has successfully completed his master thesis on “Untersuchung der Veränderung der Passivierungseigenschaften von amorphem Silizium-Suboxid-Schichten durch Indiumzinnoxid-Sputtern“.
Jan Dippell has successfully completed his master thesis on “ Light-splitting concept for residential solar applications“.
Jan Lucaßen has successfully completed his bachelor thesis on “Mechanische Substratstrukturierung für lokale Indiumabscheidung“.
Florian Beineke has successfully completed his master thesis on “Direkte, winkelabhängige und integrale VIS/NIR-Spektroskopie zur Charakterisierung von Solarzellenschichten“.
MultioptiX Prof. Dr. Martina Schmid assumes the professorship of experimental physics at the University of Duisburg-Essen
On 1 January 2017, Martina Schmid assumed the W2 professorship of “experimental physics” in the Physics department of the University of Duisburg Essen. From 2012 to the end of 2016, Martina Schmid headed the Helmholtz Young Investigator Group “Nano-Optical Concepts for Photovoltaics” at HZB.
"I look forward to my new function at the University of Duisburg-Essen because it gives me the opportunity to continue pursuing my research topics in the field of solar energy and to develop new ideas," Martina Schmid says about her new appointment at the University of Duisburg-Essen.
Before her move, Martina Schmid and her team at HZB researched into nano-optical concepts for chalcopyrite solar cells. These solar cells already achieve high efficiencies, but require rare and expensive materials to produce. The young investigator group’s aim was therefore to minimise the usage of rare elements in chalcopyrite solar cells while maintaining or even increasing their efficiency.
"By integrating nanostructures into ultra-thin CIGSe solar cells, we successfully demonstrated a significant increase in the short-circuit current density. In cooperation with the Institute for Atomic and Molecular Physics (AMOLF) in the Netherlands, we were able to achieve up to 93 percent of the maximum value attained by a thick CIGSe solar cell," Martina Schmid reports. The short-circuit current is the maximum current that a solar cell or photovoltaic module can deliver.
In a project with the Federal Institute for Materials Research and Testing (BAM) and the Leibniz Institute for Crystal Growth (IKZ), Martina Schmid’s HZB young investigator group also succeeded in producing CISe absorbers that considerably reduce the usage of rare elements. Papers were published for both results in which the EE-NOPT group was involved.
Martina Schmid will continue to supervise the members of her former young investigator group until they have finished their final theses; they have since been integrated into various organisational units at HZB.