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
Award Date: 1 Jun 2001
Physics, Master of Physics, University of Oxford
Award Date: 1 Jun 1997
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Projects
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Manufacturing of Large-Area InP on nano-V-grooved CMOS compatible Si
Engineering and Physical Sciences Research Council
24/04/20 → 30/04/21
Project: Research council
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Manufacturing of Nano-Engineered III-N Semiconductors
Shields, P., Allsopp, D. & Wang, W.
Engineering and Physical Sciences Research Council
1/05/15 → 30/09/21
Project: Research council
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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
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Nanoscale Sensors for Healthcare and the Environment (NANOSENSE)
Shields, P. & Allsopp, D.
13/10/14 → 13/04/15
Project: Research-related funding
Research output
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Advances in electron channelling contrast imaging and electron backscatter diffraction for imaging and analysis of structural defects in the scanning electron microscope
Trager-Cowan, C., Alasmari, A., Avis, W., Bruckbauer, J., Edwards, P. R., Hourahine, B., Kraeusel, S., Kusch, G., Jablon, B. M., Johnston, R., Martin, R. W., McDermott, R., Naresh-Kumar, G., Nouf-Allehiani, M., Pascal, E., Thomson, D., Vespucci, S., Mingard, K., Parbrook, P. J., Smith, M. D. & 17 others, , 5 Aug 2020, In: IOP Conference Series: Materials Science and Engineering. 891, 1, 012023.Research output: Contribution to journal › Conference article › peer-review
Open Access -
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 › peer-review
Open AccessFile4 Citations (Scopus)5 Downloads (Pure) -
Creation of regular arrays of faceted AlN nanostructures via a combined top-down, bottom-up approach
Armstrong, R., Coulon, P. M., Bozinakis, P., Martin, R. W. & Shields, P. A., 15 Oct 2020, In: Journal of Crystal Growth. 548, 125824.Research output: Contribution to journal › Article › peer-review
File17 Downloads (Pure) -
Formation of voids in selective area growth of InN nanorods in SiNx on GaN templates
Zeghouane, M., André, Y., Avit, G., Jridi, J., Bougerol, C., Coulon, P., Ferret, P., Castelluci, D., Gil, E., Shields, P., Dubrovskii, V. G. & Trassoudaine, A., 29 May 2020, In: Nano Futures. 4, 2, p. 1-7 025002.Research output: Contribution to journal › Article › peer-review
Open AccessFile34 Downloads (Pure) -
Impact of inductively coupled plasma etching conditions on the formation of semi-polar (11 2‾2) and non-polar (11 2‾0) GaN nanorods
Coulon, P. M., Feng, P., Wang, T. & Shields, P. A., 20 Dec 2020, In: Nanomaterials. 10, 12, p. 1-14 14 p., 2562.Research output: Contribution to journal › Article › peer-review
Open Access
Datasets
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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
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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) & Allsopp, D. (Supervisor), University of Bath, Mar 2017
DOI: 10.15125/BATH-00257
Dataset
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Data set for "Creation of regular arrays of faceted AlN nanostructures via a combined top-down, bottom-up approach"
Armstrong, R. (Creator), Coulon, P. (Creator), Bozinakis, P. (Creator), Martin, R. W. (Creator) & Shields, P. (Creator), University of Bath, 1 Aug 2020
DOI: 10.15125/BATH-00893
Dataset
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Dataset for "Deep-UV Emission From Highly-Ordered AlGaN/AlN Core-Shell Nanorods"
Coulon, P. (Creator), Kusch, G. (Data Collector), Martin, R. W. (Project Member) & Shields, P. (Project Leader), University of Bath, 6 Sep 2018
DOI: 10.15125/BATH-00542
Dataset
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Dataset for Structural and optical emission uniformity of m-plane InGaN single quantum wells in core-shell nanorods
Le Boulbar, E. (Creator), Shields, P. (Researcher), Allsopp, D. (Researcher), Martin, R. W. (Researcher), Edwards, P. R. (Researcher), Cherns, D. (Researcher), Hosseini-Vajargah, S. (Creator), Edwards, P. R. (Creator), Girgel, I. (Creator), Coulon, P. (Creator), Cherns, D. (Creator), Martin, R. W. (Creator), Humphreys, C. (Creator), Bowen, C. (Creator), Allsopp, D. (Creator) & Shields, P. (Creator), University of Bath, 2015
DOI: 10.15125/BATH-00150
Dataset