Welcome to the MultioptiX Group

January 2022

Publication successfully submitted by Yong Li.

"Bifacial semi-transparent ultra-thin Cu(In,Ga)Se2 solar cells on ITO substrate: How ITO thickness and Na doping influence the performance"


August 2021

Camillo Hinz has successfully completed his bachelor thesis on “Die optische Charakterisierung von semitransparenten Solarzellen mit integrierten Nanostrukturen“.

July 2021

Summer semester 2021

End of lectures

January 2021

Publication successfully submitted by Yong Li.

"Sodium control in Ultrathin Cu(In,Ga)Se2 solar cells on transparent back contact for efficiencies beyond 12%"


February 2020

Jan Lucaßen  has successfully completed his master thesis on “Implementation of a CV-Measurement and Analysis Routine for Solar Cells“.

August 2019

Lukas Schneider has successfully completed his bachelor thesis on “Inkjet printing of CIGSe absorber islands“.

July 2019

Erika Gutiérrez has successfully completed her 2-month internship on the topic “Fabrication and characterization of AIGS absorber layer”

Februar 2019

Henrik Mantke has successfully completed his master thesis on “Untersuchung der Veränderung der Passivierungseigenschaften von amorphem Silizium-Suboxid-Schichten durch Indiumzinnoxid-Sputtern“.

Februar 2019

Jan Dippell has successfully completed his master thesis on “ Light-splitting concept for residential solar applications“.

Januar 2019

Jan Lucaßen has successfully completed his bachelor thesis on “Mechanische Substratstrukturierung für lokale Indiumabscheidung“.

September 2018

Florian Beineke has successfully completed his master thesis on “Direkte, winkelabhängige und integrale VIS/NIR-Spektroskopie zur Charakterisierung von Solarzellenschichten“.


Porträt von Frau Prof. Dr. Martina Schmid
Prof. Dr. Martina Schmid, Foto: UDE/Frank Preuß

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.

Antrittsvorlesung 19: April 2017

"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.