The Institute of Electronic Structure and Laser of the Foundation for research and Technology Hellas (IESL-FORTH), in the framework of the project «Quantum Memory Prototype For Space», QMem, is seeking to recruit one (1) post doctoral researcher for supporting the Space Optics laboratory.
Job Description
The candidate will in design and implementation of laser optic systems.
Application Submission
Interested candidates who meet the aforementioned requirements are kindly asked to submit their applications, no later than June 15, 2026, 23:59 local Greece time to the address (hr@iesl.forth.gr), with cc to the scientific coordinator, Dr Wolf von Klitzing (wvk@iesl.forth.gr).
In order to be considered, the application must include:
Any application received after the deadline will not be considered for the selection
The Institute of Electronic Structure and Laser of the Foundation for research and Technology Hellas (IESL-FORTH), in the framework of the project «Quantum Memory Prototype For Space», QMem, is seeking to recruit one (1) research assistant position for supporting the Space Optics laboratory.
Job Description
The candidate will engage in fabrication of glass fibers and their metal coating using chemical and physical deposition methods. Characterization of the fibers will include advanced surface characterization methods.
Application Submission
Interested candidates who meet the aforementioned requirements are kindly asked to submit their applications, no later than June 15, 2026, 23:59 local Greece time to the address (hr@iesl.forth.gr), with cc to the scientific coordinator, Dr Wolf von Klitzing (wvk@iesl.forth.gr).
In order to be considered, the application must include:
Any application received after the deadline will not be considered for the selection
The emergence of ultra-wide-band-gap semiconductors and their deployment in high-power and high-frequency electronic devices has challenged the conventional distinction between semiconductors and insulators based solely on the magnitude of their band gap. It also raised fundamental questions about the extreme upper bound of band gaps that are compatible with semiconducting behavior. I will discuss the development and applications of computational discovery strategies based on first-principles electronic-structure and defect calculations to identify materials that combine ultra-wide band gaps with shallow dopants and mobile carriers. I will first discuss the discovery of semiconducting rutile GeO2 and its alloys with SnO2, which have since attracted experimental interest for applications in power electronics and UV transparent conductors. Despite their ultra-wide gaps (3.6–4.7 eV), our calculations predict that these materials exhibit shallow dopants, high mobilities, and high thermal conductivities. The n-type dopability has since been verified experimentally, and early transistor devices have been demonstrated. Surprisingly, both experiments and theory find that alloy disorder in Sn-rich (Ge,Sn)O2 alloys has little impact on the electron mobility. We attribute this property to the insensitivity of the conduction-band edge with respect to alloy composition in the Sn-rich range, which suppresses spatial fluctuations of the electron energies. We then apply this materials-discovery strategy to identify new semiconductors with band gaps exceeding that of AlN (6.2 eV) while retaining essential semiconducting properties such as shallow dopants and mobile charge carriers. We find that compounds composed of light elements in dense crystal structures such as tetrahedral BeO and rutile SiO2 can sustain shallow dopants, weak polaron binding, and mobile carriers even for gaps as wide as 9.5 eV. Our findings demonstrate that semiconducting behavior persists even at extreme band gaps, far beyond conventional upper bounds traditionally associated with semiconductor materials.
Andreas Oikonomou was an undergraduate student of the department of Electrical and Electronics Engineering at the University of West Attica. He joined Matter Waves Group as a research assistant and is now the lead PhD Student on RamanBC. He is also leading the Zerodur/OBST based QMem single-pass AOM board.
