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W6: Source-gated transistors
The building block of next-generation thin-film edge processing systems





Half day, 13:30



Room 6


Source-gated transistors (SGTs) have a relatively long history of development but only recently have mainstream technologies allowed for their effective implementation at scale. This tutorial is addressed to those interested in efficient analog and mixed signal design with advanced thin-film transistors. It provides a development progression with a forward look toward SGT application to future edge processing of sensor data, signal conditioning, and current-mode driving. Crucially, the concept can be applied in practically any material system. As such, the tutorial will present the fundamentals of contact effect engineering and modelling, design rules for successful SGT implementation, specifics of performance optimisation in organic and oxide semiconductors, and structural evolutions for additional functionality.


Radu Sporea (University of Surrey, UK)

Dr Radu Sporea SMIEE MIET is Senior Lecturer in Power Electronics and Semiconductor Devices at the Advanced Technology Institute (ATI), University of Surrey and holds an EPSRC Early Career Fellowship (2021-2026).

Prior to this appointment he was Royal Academy of Engineering Academic Research Fellow (2011-2016), EPSRC PhD+ Fellow (2010-2011) and PhD researcher (2006 – 2010) in the same centre. Before joining Surrey, Radu has studied Computer Systems Engineering at “Politehnica” University, Bucharest, Romania, and has worked as a Design Engineer for Catalyst Semiconductor Romania, now part of ON Semiconductor, on ultra-low-power CMOS analog circuits. Radu’s was named an EPSRC Rising Star in 2014 and was the recipient of the I K Brunel Award for Engineering in 2015. He was presented the Vice Chancellor’s award for Early Career Teaching in 2017 and won the Tony Jeans Inspirational Teaching distinction in 2018. In 2021, he was a finalist of the Innovator of the Year prize at Surrey. Radu chaired the 17th International Thin Film Transistor Conference (ITC2022) held as a hybrid event on the University of Surrey campus.

Current research in Radu’s team focuses on three main topics:

1. Advanced large-area semiconductor device design, including transistors with increased tolerance to fabrication variability, improved energy efficiency and high gain.

2. Large area sensors and sensor arrays for smart environments, focusing on multi-modal low-cost integration in commercial manufacturing platforms and mass-market products.

3. Paper-based electronics and physical-digital interaction.

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