Dr Bogdan Spiridon

It is well known that GaN-based devices have outstanding characteristics which are exploited in optical, high-frequency, and high-power applications. The more recent use of GaN for sensors has great potential for the improvement and extension of current sensing applications. In particular, GaN is well suited for sensing in harsh environments thanks to its ability to withstand thermal and mechanical stress, corrosive chemicals and ionising radiation.

I am working on the design and characterisation of GaN-based sensors. The theoretical design is supported by numerical simulation models both at the nanoscale using Sentaurus TCAD and at a larger scale using Comsol Multiphysics. Characterisation is performed from a material perspective (AFM, XRD) as well as electrically to comprehensively assess the performance and manufacturability of sensor structures.

My project is a collaboration between the Materials Science and Metallurgy Department and the Engineering Department. I am also part of the Centre for Doctoral Training in Sensor Technologies and Applications (Sensors CDT), an integrated programme of study and research focusing on interdisciplinary innovation.