Ewch i’r prif gynnwys
Yr Athro David Wallis

Yr Athro David Wallis

Professor - Compound Semiconductors

Yr Ysgol Peirianneg

Email:
wallisd1@cardiff.ac.uk
Telephone:
+44 (0)29 2087 9065
Location:
Room S/1.08, Adeiladau'r Frenhines -Adeilad y De, 5 The Parade, Heol Casnewydd, Caerdydd, CF24 3AA
Ar gael fel goruchwyliwr ôl-raddedig

Gallium Nitride is a new semiconductor that is delivering a revolution in the performance and efficiency of LEDs and transistors. My research focuses on the development of epitaxial growth and device technologies in this material. In particular, I am developing GaN on Si that will deliver the next generation of low cost GaN electronic devices and cubic-GaN, which will significantly improve the efficiency and quality of LED lighting. I have also recently launched a spin-out company, Kubos semiconductors, which will commercially develop the cubic GaN growth technology based on my research.

I currently hold a join chair in Compound semiconductors between the Universities of Cardiff and Cambridge and I am also an EPSRC Manufacturing fellow. Before taking up my current academic position I was employed by Plessey Semiconductors and was responsible for setting up their GaN growth capability and the technology transfer of the GaN on Si growth technology that they aquired from the University of Cambridge to enable the launch of their GaN on Si LED products. Prior to this I worked for QinetiQ Plc for 14 years and was technical lead for their GaN growth and characterisation capability. This role was largely focused on the development of GaN based RF devices. I recieved my PhD in Microstructural Physics from the University of Cambridge.

ID

Title

Funder

Dates

Value

PI/CoI

EP/R01146X/1

:

Fundamental studies of zincblende nitride structures for optoelectronic applications

EPSRC

2/18 –1/21

£493k

PI

EP/R03480X/1

'Hetero-print': A holistic approach to transfer-printing for heterogeneous integration in manufacturing

EPSRC

6/18 – 5/23

£5.5M

CoI

EP/P00945X/1

Integrated GaN-Diamond Microwave Electronics: From Materials, Transistors to MMICs

EPSRC

1/17 - 12/21

£4.3M

CoI

EP/N017927/1

Integration of RF Circuits with High Speed GaN Switching on Silicon Substrates

EPSRC

5/16 - 4/19

£2.4M

CoI

EP/P03036X/1

Vertical cubic GaN LEDs on 150mm 3C-SiC substrates

IUK

2/17 - 7/18

£208k

PI

EP/N01202X/2

EPSRC Manufacturing Fellowship in Gallium Nitride

EPSRC

3/16 - 2/21

£1.3M

PI

103446

GaNSense

IUK

10/17-12/18

£306k

CoI

EP/S01005X/1

Non-linear (large signal) Millimetre-wave Devices, Circuits and Systems On-Wafer Characterization Facility

EPSRC

10/18 - 9/19

£1.4M

CoI

EEF6084

Energy Entrepreneurs grant

BEIS

10/18 - 9/20

£690k

PI

I am interested in supervising PhD students in the area of

  • GaN growth
  • GaN characterisation
  • GaN devices