Job description
Tyndall National Institute at University College Cork invites applications for a Researcher position.
Two-dimensional (2D) materials are a class of materials with strong covalent or ionic bonds in the plane and weaker bonds in the third dimension. A particular class of 2D materials called “transition metal dichalcogenides (TMD’s),” are of particular interest as they can exhibit semiconductor properties with a range of energy gaps. These TMD materials present unique physical and electrical properties which make 2D materials attractive for numerous applications such as transistors, sensors, transparent metal electrodes and energy conversion.
Phase change memory devices based on chalcogenide materials (e.g. Ge2Sb2Te5) is a promising technology for future non-volatile flash memory applications. These materials can be crystallised or amorphised using electrical pulses of different intensity and duration. The two crystalline structures exhibit very different electrical resistivity. The ability to grow and synthesise chalcogenide nanowires (NWs) enables the reduction of volume of material used in each memory cell and therefore increases the capacity of storage and also reduces the power consumption per individual memory cell.
Considerable effort is currently dedicated to investigate the structural and electrical properties of these chalcogenide NWs and 2D materials (e.g. MoS2). However, this requires carefully designed strategies to synthesise/grow these materials, isolate them and finally contact them in order to extract meaningful parameters and understand their physical/electrical properties.
This post-doctoral position will cross over two research projects. The first project is a European funded multinational research project including partners in Ireland, Italy, Germany and France. The second research project is funded by a large industrial partner.
The successful post-doctoral candidate will investigate novel methods for contact formation on chalcogenide NWs and MoS2 2D materials and will carry out electrical characterisation measurements with the objective to understand the electrical properties of these novel structures.
Responsibilities
- Investigate the structural properties of chalcogenide NWs and 2D TMD materials
- Explore a range of surface passivation and contact strategies.
- Design test structures.
- Carry out electrical characterisation of the test structures.
- Interact with project partners in Ireland and abroad.
- Attend project meetings, present results and write project reports.
- Contribute to journal and conference publications as co-author and first author.
- Supervise research students and undergraduate project students.
Desired Skills and Experience
Requirements
- First degree in Physics, Electrical Engineering or a related discipline
- PhD in Physics or Materials Science
Skills
- Experimental planning
- Analysis of physical and electrical data for materials and devices
- Interpretation of Transmission Electron Microscope Data
- Ability to disseminate research material effectively
- Good organizational, report writing and interpersonal skills
- Supervisory skills (for supervision of undergraduate and research students)
Experience
- Strong experience in contacting NWs and nanostructures using focused ion beam techniques.
- Direct research experience in physical and electrical characterization of materials and devices.
- Extensive experience in measurement control and automation
- Practical experience of on-wafer device characterisation.
- In particular, detailed knowledge of LabVIEW for control of electrical characterisation equipment is desirable.
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