PhD Position in Quantitative Analysis of Carrier Dynamics in Photovoltaic Devices

This PhD position at Forschungszentrum Jülich’s Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (ER-C) focuses on investigating the fundamental nanoscale processes governing light-to-electricity conversion in silicon-based photovoltaic devices. The project leverages cutting-edge techniques such as off-axis electron holography, ultrafast laser excitation, and pulsed electron beams to probe electrostatic potentials and charge carrier dynamics with unprecedented spatial and temporal resolution. The successful candidate will work in an interdisciplinary, international research environment, contributing to high-impact advancements in energy conversion and materials science. The role involves hands-on experimental work, data analysis, and collaboration with both internal and external partners, culminating in publications and presentations in top-tier scientific outlets.

• Prepare electron-transparent TEM lamellae and specimens for advanced microscopy studies.
• Operate and optimize ultrafast laser systems (femtosecond to picosecond range) and associated optical setups.
• Characterize electrostatic potentials and excited carrier concentrations using off-axis electron holography.
• Map charge carrier lifetimes by synchronizing ultrashort laser pulses with pulsed electron beams and detectors.
• Conduct structural and electrical characterization using TEM techniques such as STEM, CBED, EELS, and GPA.
• Investigate carrier generation, recombination, and defect interactions in photovoltaic materials.
• Analyze and interpret experimental data to derive insights into efficiency-limiting factors.
• Document and publish results in scientific manuscripts, conference presentations, and technical reports.
• Collaborate with and co-supervise students and research interns.