Projects per year
Personal profile
Research interests
I currently work in the area of semiconductor technology, predominantly in the area of group III-V optoelectronics. A major focus of my work has been the creation of optoelectronic devices based on the group III-nitride wide bandgap semiconductor materials.
I have experience in MOVPE semiconductor growth, alongside micro and nanofabrication for the creation of light-emitting and laser diodes. Recently, I have been exploring semiconductor crystal growth on three-dimensional, patterned substrates; understanding how the substrate affects the growth process. This has led to an extensive study of core-shell light-emitting diodes; primarily emitting in the visible regime, but also more recently in the ultraviolet.
As a result of needing large area nanopatterning for creating growth templates, I also have expertise in nanoimprint lithography (NIL), electron beam lithography (EBL) and displacement Talbot lithography (DTL).
Education/Academic qualification
Doctor of Philosophy, University of Oxford
Physics, Master of Physics, University of Oxford
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Projects
Manufacturing of Nano-Engineered III-N Semiconductors
Shields, P., Allsopp, D. & Wang, W.
Engineering and Physical Sciences Research Council
1/05/15 → 28/02/21
Project: Research council
Large-area nanoengineered Si substrates for InP
Engineering and Physical Sciences Research Council
24/04/20 → 23/10/20
Project: Research council
Manufacturing of Nano-Engineered III-N Semiconductors - Equipment
Shields, P. & Allsopp, D.
Engineering and Physical Sciences Research Council
1/02/15 → 31/01/20
Project: Research council
Nanoscale Sensors for Healthcare and the Environment (NANOSENSE)
Shields, P. & Allsopp, D.
13/10/14 → 13/04/15
Project: Research-related funding
Research Output
AlN overgrowth of nano-pillar-patterned sapphire with different offcut angle by metalorganic vapor phase epitaxy
Walde, S., Hagedorn, S., Coulon, P., Mogilatenko, A., Netzel, C., Weinrich, J., Susilo, N., Ziffer, E., Matiwe, L., Hartmann, C., Kusch, G., Alasmari, A., Naresh-kumar, G., Trager-cowan, C., Wernicke, T., Straubinger, T., Bickermann, M., Martin, R. W., Shields, P. A., Kneissl, M. & 1 others, , 1 Feb 2020, In : Journal of Crystal Growth. 531, 125343.Research output: Contribution to journal › Article
1
Citation
(Scopus)
Displacement Talbot Lithography for nano-engineering of III-nitride materials
Coulon, P-M., Damilano, B., Alloing, B., Chausse, P., Walde, S., Enslin, J., Armstrong, R., Vézian, S., Hagedorn, S., Wernicke, T., Zúñiga-Pérez, J., Weyers, M., Kneissl, M. & Shields, P., 2 Dec 2019, In : Microsystems & Nanoengineering. 5, 52.Research output: Contribution to journal › Article
Open Access
2
Citations
(Scopus)
Scanning electron microscope as a flexible tool for investigating the properties of UV-emitting nitride semiconductor thin films
Trager-Cowan, C., Alasmari, A., Avis, W., Bruckbauer, J., Edwards, P. R., Hourahine, B., Kraeusel, S., Kusch, G., Johnston, R., Naresh-Kumar, G., Martin, R. W., Nouf-Allehiani, M., Pascal, E., Spasevski, L., Thomson, D., Vespucci, S., Parbrook, P. J., Smith, M. D., Enslin, J., Mehnke, F. & 16 others, , 30 Oct 2019, In : Photonics Research. 7, 11, p. B73-B82 10 p.Research output: Contribution to journal › Article
Open Access
1
Citation
(Scopus)
Top-down fabrication of GaN nano-laser arrays by displacement Talbot lithography and selective area sublimation
Damilano, B., Coulon, P. M., Vézian, S., Brändli, V., Duboz, J. Y., Massies, J. & Shields, P. A., 27 Mar 2019, In : Applied Physics Express. 12, 4, 045007.Research output: Contribution to journal › Article
Open Access
2
Citations
(Scopus)
Understanding resolution limit of Displacement Talbot Lithography
Chausse, P., Le Boulbar, E., Lis, S. & Shields, P., 4 Mar 2019, In : Optics Express. 27, 5, p. 5918-5930 13 p.Research output: Contribution to journal › Article
Open Access
5
Citations
(Scopus)
8
Downloads
(Pure)
Datasets
Dataset for "Understanding the resolution limit of Displacement Talbot Lithography"
Chausse, P. (Creator), Le Boulbar, E. (Creator), Lis, S. (Creator), Shields, P. (Creator), University of Bath, 20 Feb 2019
DOI: 10.15125/BATH-00570
Dataset
Dataset for 'Design and fabrication of enhanced lateral growth for dislocation reduction and strain management in GaN using nanodashes'
Shields, P. (Creator), Le Boulbar, E. (Creator), Priesol, J. (Creator), Šatka, A. (Creator), Allehiani, N. (Creator), Naresh-Kumar, G. (Creator), Fox, S. (Creator), Trager-Cowan, C. (Creator), University of Bath, Mar 2017
DOI: 10.15125/BATH-00257
Dataset
Fabrication of high-aspect ratio GaN nanostructures for advanced photonic devices
Le Boulbar, E. (Creator), Lewins, C. (Creator), Allsopp, D. (Creator), Bowen, C. (Creator), Shields, P. (Creator), University of Bath, Apr 2016
DOI: 10.15125/BATH-00154
Dataset
Evolution of the m-plane Quantum Well Morphology and Composition within a GaN/InGaN Core-Shell Structure
Coulon, P. (Creator), University of Bath, 2016
DOI: 10.15125/BATH-00224
Dataset
Dataset for "Deep-UV Emission From Highly-Ordered AlGaN/AlN Core-Shell Nanorods"
Coulon, P. (Creator), University of Bath, 6 Sep 2018
DOI: 10.15125/BATH-00542
Dataset
Thesis
Development of InGaN/GaN Core-Shell Light Emitters
Author: Girgel, I., 27 Jun 2017Supervisor: Shields, P. (Supervisor)
Student thesis: Doctoral Thesis › PhD
File
Fabrication and Characterisation of III-nitride light emitting diodes emitting at non-standard wavelengths
Author: Cavanagh, K. F., 1 May 2019Supervisor: Wang, W. (Supervisor), Allsopp, D. (Supervisor) & Shields, P. (Supervisor)
Student thesis: Doctoral Thesis › PhD
File
Photonic Crystals for the Control of Light Extraction from III-Nitride Light-Emitting Diodes
Author: Lewins, C., 1 Jun 2016Supervisor: Allsopp, D. (Supervisor) & Shields, P. (Supervisor)
Student thesis: Doctoral Thesis › PhD
File
Simulation, Optimisation and Manufacture of Gallium Nitride Based Blue Light Emitting Diodes on Silicon substrates
Author: Vinden, K., 17 Jul 2019Supervisor: Shields, P. (Supervisor) & Allsopp, D. (Supervisor)
Student thesis: Doctoral Thesis › PhD