University College Cork, Tyndall National Institute invites applications for the position of a Post Graduate Student to investigate and develop next generation nano-scale interconnections for SiC high temperature devices.
SiC devices offer a number of advantages for automotive applications: high breakdown field and wide band gap means that they can withstand higher breakdown voltages and operating temperatures as well as consuming less power than conventional Si or even SOI technology. This will enable smaller, more efficient power conversion systems to be realised for automotive applications.
The packaging of SiC power devices is quite challenging because of the demand for high current carrying capability as well as high voltage isolation. Oxidation of the electrical contacts is a concern when exposed to high temperatures (250-400 C). The coefficient of thermal expansion (CTE) of the substrate should match the CTE of thermal interface material and the SiC devices. Due to the requirement of carrying high current designers are forced to use high conductivity metals such as copper in the package, and this creates significant packaging issues, as there is quite some mismatch between CTE of SiC which is 4 ppm/ C, and the CTE of copper which is 16 ppm/ C. The tasks proposed below will take into consideration the thermal issues by introducing a nano-composite metallization, between chip and substrate. Also high temperature resistant lead-free solders or other metal alloys are considered for either flip-chip interconnections or thermal interfacing.
The ideal candidate will have a first class honours degree from Materials Science, Chemistry, Physics, Electrical/ Electronic Engineering or closely related disciplines.
Role of the candidate:
1. Perform research in the area noted above, under the guidance of the nominated supervisor.
2. Work as part of the Heterogeneous System Integration research team, sharing resources and experimental facilities with other research personnel.
3. Acquire specific skills in sample preparation and characterisation.
4. Learn how to work safely, and adopt these practices as required by Tyndall.
5. Work within the ISO guidelines as required by Tyndall (NB the other institutions involved may have other guidelines that must be adopted).
6. Acquire specific transferable skills in terms of time management, reporting, keeping of formal laboratory notebooks and communication of results.
7. Present findings at a variety of national and international meetings including both closed and open seminars, workshops and conferences.
8. Prepare and defend reports and other materials designed to be effective metrics of progress, as required by Tyndall/ UCC.
9. Attend training courses and lectures as required by the supervisor and achieve appropriate standards in the assessments associated with these.
10. Prepare a thesis of the standard required for the award of the degree of PhD as laid down in the code of practice for PhD students specified by Tyndall/UCC.
11. At the end of the period of study, attend a defence of thesis examination and satisfy the examiners in terms of the procedures laid down for such examinations by UCC/Tyndall.
For more information, please contact Dr. Kafil M. Razeeb on Tel: +353 21 490 4078 or email: kafil.mahmood@tyndall.ie
To apply, please submit a CV to careers@tyndall.iequoting the reference number.
To apply for this post, complete the application form and forward with a detailed curriculum vitae and references to:
HR Department
Tyndall National Institute, Lee Maltings, Prospect Row, Cork, Ireland
Fax: +353-21-4904058
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