Vacancies

We presently have three vacancies. To apply for these positions, visit: www.amolf.nl/work-at (application deadline May 15, 2018)

PhD position: Photon correlations in time-resolved cathodoluminescence spectroscopy

In this project you will explore the unique properties of time-resolved cathodoluminescence (TR-CL) microscopy to measure the optical density of states and bandstructure of photonic nanostructures at deep-subwavelength resolution. The TR-CL microscope, that was just completed in our group, can deliver ultrashort electron pulses (down to one electron per pulse) and measures the g(2) photon correlation statistics. A completely new research field now opens up in which we will use TR-CL to investigate the fundamental properties of optical emitters and their coupling to the environment, plasmon-exciton coupling, topological photonic materials and more, at a spatial resolution of only 10 nm.

Postdoc position: Tailored electron wavefunctions in quantum cathodoluminescence microscopy

In this project you will explore the use of spatially and temporally tailored wavefunctions of electrons in cathodoluminescence (CL) scanning electron microscopy with the aim to gain coherent control over electron-matter interaction. The project exploits two new time-resolved CL microscopes that were developed in our group that can deliver ultrashort (single-)electron pulses. You will investigate how electron wavefunctions in an SEM can be tailored by interaction with suitably tailored optical near fields in nanophotonic geometries. The CL microscope is then operated as a quantum instrument with well-prepared initial electron states that can be entangled with materials excitations. This enables studies on correlations in time and space, and real-time studies of excited states by their spectroscopic signatures.

PhD position: Light management in ultrathin PbS quantum dot solar cells

In this project you will develop optical metasurfaces that control the coupling and trapping of light in ultrathin high-efficiency solar cells. We will use the new concept of metagratings that combine resonant light scattering from dielectric and plasmonic nanostructures with grating scattering. The project involves numerical modelling of light concentration and propagation patterned solar cell geometries, fabrication of the ultrathin solar cells, and characterization. The PhD project is carried out as collaboration between the School for Photovoltaics and Renewable Energy Engineering (SPREE) at the University of New South Wales (Sydney) and the Center for Nanophotonics at AMOLF (Amsterdam, the Netherlands). The project combines the leading expertise of the two institutions in solar cell materials fabrication and analysis and engineering (SPREE), and the design and characterization of photonic nanostructures (AMOLF). The main focus of the project will be on an improvement of PbS quantum dot solar cells (UNSW holds the world record in efficiency for PbSe quantum solar cells), using nanoscale design and soft imprint technology developed at AMOLF. The student will also serve as the liaison for other collaborative projects between AMOLF and UNSW. The prospective PhD student will start for a period of 6-12 months to get trained in nanophotonics at AMOLF; then a 2-3 year period at UNSW, and the last period in Amsterdam to finish the PhD thesis, with the degree awarded by the University of Amsterdam.

About the group

Our group is composed of an international team of 8-10 PhD students, postdocs and masters students that work in a collaborative atmosphere with many social group activities. Every week we hold group meeting, CL and PV  team meeting, and group journal club. We are part of AMOLFs Center for Nanophotonics that is composed of 7 nanophotonics research groups (60 PhD students and postdocs) and holds weekly nanophotonics colloquium.

For further details about these positions, contact Albert Polman: e-mail: polman@amolf.nl