PhD-student Understanding and using the properties of a unique semiconductor: ion migration in lead halide perovskites

Date posted September 11, 2020
Type PhD positions

Metal-halide perovskites are unique materials: They are semiconductors for both electrons and ions. Recently, enormous research effort has been undertaken to use these perovskites in highly efficient solar cells and LEDs, applications where the electron conduction is required to be highly efficient while the ion conduction needs to be suppressed.
Here you will study the ion conduction using a technique we have recently developed for hybrid perovskites within the group: transient ion drift. These experiments allow us to characterize ion migration, as well as electronic trap states. In addition to making perovskite devices, you will be able to learn use a range of characterization techniques, including ultrafast pump-probe techniques, photoluminescence and electrical characterization. 
By varying process and device parameters you will learn how to control ion conduction. This control will then allow us to either reduce it (as is desired for solar cells and LEDs) or tune it at will. This tunability will open a space for new applications of lead halide perovskites: The combination of ion and electron semi-conduction in one material could be used for memory and computing devices that work much more energy efficient than conventional computers.

About the group

The Hybrid Solar Cell Group focuses on novel paths towards more efficient solar cells using both organic and inorganic materials. We aim at combining the unique properties and the richness of organic materials with the highly efficient, well-characterised inorganic materials. 
We provide a highly collaborative and supportive environment, both within the group and with our national and international collaborators.


We welcome applications from highly motivated candidates with a very strong background in physics, chemistry, material science, or engineering and an interest in solar cells. PhD candidates must meet the requirements for an MSc degree.

Terms of employment

The position is intended as full-time (40 hours / week, 12 months / year) appointment in the service of the Netherlands Foundation of Scientific Research Institutes (NWO-I) for the duration of four years, with a starting salary of € 2407 and a range of employment benefits. After successful completion of the PhD research a PhD degree will be granted at Groningen University. Several courses are offered, specially developed for PhD-students. AMOLF assists any new foreign PhD-student with housing and visa applications and compensates their transport costs and furnishing expenses.

Contact info

Prof.dr. Bruno Ehrler
Group leader Hybrid Solar Cells
Phone: +31 (0)20-754 7100

You can respond to this vacancy online via the button below.
Please annex your:
–  Resume;
–  Motivation on why you want to join the group (max. 1 page).

It is important to us to know why you want to join our team. This means that we will only consider your application if it entails your motivation letter.
Deadline for applications is 30 November 2020.

Online screening may be part of the selection.

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