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PhD Theory of carrier transport in nitride based heterostructures

SS-3 - PhD position: Theory of carrier transport in nitride-based heterostructures

Contract typeFull-time

Tyndall National Institute at University College Cork invites applications for a PhD position. The research is theory-driven, spanning basic science through to investigations of fundamental processes limiting present day devices, and including design and modeling of new and optimized devices.

The project aims to study carrier transport in nitride-based nanostructures for optoelectronic device applications, such as light emitting diodes (LEDs). Here, nitride-based heterostructures, such as multiple InGaN quantum wells, are of critical importance for energy efficient solid state lighting.

Recent experimental and theoretical studies reveal that electronic and optical properties of nitride-based heterostrucures are significantly affected by carrier localization effects arising from alloy fluctuations. However, for carrier transport, important for understanding and optimising LED properties, these factors have been widely neglected. For a realistic treatment of these systems, carrier localization effects should be included in the theoretical description, ideally on a microscopic, atomistic level. Combining first-principles, empirical atomistic and continuum-based calculations, the project targets a detailed understanding of how carrier localization effects and thus related deviations from the usually assumed ideal structures impact especially carrier transport in InGaN-based multi quantum well systems and ultimately LED structures.

The project aims for a close linkage between theory and experiment, to elucidate how to manage carrier localization and ultimately carrier transport in these structures.

Key Duties and Responsibilities

This project builds on first-principles, empirical atomistic and continuum-based investigations we have undertaken of nitride-based nanostructures, including strain and alloy effects. Here, development of atomistic and continuum-based simulation tools, including parameter and code development, is required to address carrier transport in III-N heterostructures and devices. Interaction with both internal and external partners from theory and experiment will be a central part of the project.

Essential Criteria 

The successful candidate for the positions will have a very good undergraduate degree in physics, electronic engineering, applied mathematics, chemistry or materials science.

Informal enquiries concerning this studentship can be made to: Dr. Stefan Schulz (email stefan.schulz@tyndall.ie).

An annual student stipend of €18,000.00 applies for this successful candidate for this position.  Yearly University academic fees will paid by the Tyndall National Institute.

Application Instructions

Step 1 - click here to download the application form

Step 2 - return the completed application form, together with your cv and motivation letter to careers@tyndall.ie.

Handwritten forms will not be accepted.  No late applications will be accepted.

Please note that Garda vetting and/or an international police clearance check may form part of the selection process.

The University, at its discretion, may undertake to make an additional appointment(s) from this competition following the conclusion of the process.

At this time, Tyndall National Institute does not require the assistance of recruitment agencies.

Tyndall National Institute at University College, Cork is an Equal Opportunities Employer.