PhD Student (f/m/d) Tandem Perovskite and Silicon Solar Cells – characterization, modeling, stability

PhD Student (f/m/d) Tandem Perovskite and Silicon Solar Cells – characterization, modeling, stability
The doctoral theses will take place at three closely cooperating Institutes, in three working groups. We are looking for two PhDs.

In Berlin:
The mission of PVcomB is to support worldwide growth of thin-film photovoltaic technologies and products by providing top-level development and technology transfer. In co-operative R&D projects with academia and industry all relevant aspects of thin-film photovoltaics are addressed. The structure of PVcomB is unique in its combination of research & development with high-level education and training. The Thesis is hosted in the group Outdoor Performance Analysis.

The Young Investigator Group Perowskite Tandem Solar Cells is conducting on the organic-inorganic perovskite materials, which are one of the biggest surprises in solar cell research. In just six years, the efficiency of perovskite solar cells has increased five-fold; moreover, perovskite solar cells can be manufactured from solution and be cost-effectively printed on large areas in the future. The group holds the current world record in the highest efficiency of a tandem solar cell with Perovskite.

In Slovenia:
The strength of the ‘Laboratory of photovoltaics and optoelectronics’ at the University of Ljubljana (LPVO-UL) in Nano-optics, computer simulation und outdoor monitoring of solar devices supports this common project. With the HZB, a long lasting close colaboration is already set up.

1. Topic of the doctoral thesis: Perovskite silicon tandem solar device, characterization, modeling, stability
2. Topic of the doctoral thesis: Perovskite silicon tandem solar cells, outdoor device characterization and energy yield modeling

The PhD students will be a member of the Graduate School “Hybrid systems for electronics, optoelectronics and photovoltaics” (Hybrid4Energy).


  • Preparation of your own samples under instruction and later on your own
  • Characterization of your samples with various methods
  • Development of an optoelectrical model
  • Refinement of existing outdoor measurement methods for Perovskite-Silicon tandems
  • Analysis of outdoor acquired data and development of a model on outdoor stability and on the energy yield of Perovskite-Silicon tandems


  • Completed Diploma or Master Degree in Physics or Chemistry
  • Ability to work safely in the lab environment
  • Good programming skills
  • Basic knowledge on working principle of solar cells
  • Scientific mindset
  • Mobility (min. 6 month stay in Slovenia, min. 1 year in Berlin)

Dr. Carolin Ulbrich
(030) 8062 – 18140


About the employer:

We conduct research on complex materials in order to contribute solutions for the energy transition. Our research portfolio includes solar cells, solar fuels, and materials for new, energy-efficient information technologies as well as electrochemical energy storage and catalysis. At our synchrotron radiation source BESSY II we therefore offer unique experimental possibilities. Our state of the art infrastructures serve an international user community as well.


… is the formula for our successful human resources policy. We offer wide-ranging internal and external qualification opportunities for our employees, including special support for junior scientists. Our family-friendly workplace policy includes flexible working hours and telework arrangements. HZB values diversity as driver for successful scientific collaborative work and promotes a supportive working atmosphere for people from all backgrounds.

Areas of Research:

  • Energy Engineering
  • Energy Materials
  • Photovoltaics

About Company
Helmholtz-Zentrum Berlin
Berlin, Germany
Job Info
Job Status: Open
No of Vacancies: 2
Date Posted: March 25, 2020
Expiry Date: 2020-03-25
Job Type: PhD Studentship
Job Level: Any
Years of Experience: 2
Salary Info
Salary Type: Negotiable
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