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Advertising division: IEK-5 - Photovoltaics
Reference number: 2019D-128

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The Institute of Energy and Climate Research – Photovoltaic (IEK-5) focusses on researching new materials and innovative device architectures for sustainable photovoltaics based on thin films. The IEK-5 deals with the fundamental physics of partly disordered materials used in solar cells. These can be amorphous or microcrystalline silicon and its alloys, organic or hybrid (organic-inorganic) materials or various functional oxides. In addition, components and devices for new applications such as passivation and contact layers for high efficiency silicon heterojunction solar cells or multijunction solar cells for efficient water splitting are developed.

Solar cells made from Cu(In,Ga)Se2 are currently the highest efficiency thin-film solar cell technology with efficiencies exceeding 23%. In this project, we want to explore the practical and theoretical efficiency limits of Cu(In,Ga)Se2 solar cells by detailed characterization and simulation.

We are offering a

PhD Position for the Electro-Optical Simulation and Spectroscopy of Solar Cells

Your Job:

  • Method development to perform detailed loss analysis of current state of the art CIGSe solar cells
  • Realistic device simulation of current high efficiency solar cells and comparison with simulations of the radiative efficiency limit
  • Transient and steady state photoluminescence measurements on devices and films to determine the key recombination and transport properties in order to assign the losses correctly


Your Profile:

  • Master Degree in Physics, Electrical Engineering or related disciplines
  • Very good grades during the Bachelor and Master studies
  • Excellent written and oral command of English
  • Ideally previous knowledge of solar cell characterization and simulation
  • Excellent ability to cooperate and work in a team

Our Offer:

  • Outstanding scientific and technical infrastructure – ideal conditions for successfully completing a doctoral degree
  • The IEK-5 is part of the graduate program HITEC of the Helmholtz Association, which offers a program for the acquisition of additional qualifications as well as interdisciplinary exchange and mentoring
  • A highly motivated group as well as an international and interdisciplinary working environment at one of Europe`s largest research establishments
  • Continuous, professional support by your scientific supervisor
  • Further development of your personal strengths, e.g. via a comprehensive further training programme
  • Pay in line with 50 % of pay group 13 of the Collective Agreement for the Public Service (TVöD-Bund) pay higher than the basic pay may be possible
  • Usually a contract for the duration of 3 years


Forschungszentrum Jülich aims to employ more women in this area and therefore particularly welcomes applications from women.

We also welcome applications from disabled persons.

Additional Information

We look forward to receiving your application, preferably online via our online recruitment system on our career site until 09.10.2019, quoting the above-mentioned reference number.

Questions about the vacancy?
Contact us by mentioning the reference number 2019D-128: career@fz-juelich.de
Please note that for technical reasons we cannot accept applications via email.