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).
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
Education/Academic qualification
Doctor of Philosophy, The magneto-optical properties of semiconductors and the band structure of gallium nitride, University of Oxford
Award Date: 1 Jun 2001
Physics, Master of Physics, University of Oxford
Award Date: 1 Jun 1997
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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Manufacturing of Large-Area InP on nano-V-grooved CMOS compatible Si
Shields, P. & Chausse, P.
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
Research output
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Core-Shell Nanorods as Ultraviolet Light-Emitting Diodes
Cameron, D., Coulon, P. M., Fairclough, S., Kusch, G., Edwards, P. R., Susilo, N., Wernicke, T., Kneissl, M., Oliver, R. A., Shields, P. A. & Martin, R. W., 7 Feb 2023, (E-pub ahead of print) In: Nano Letters.Research output: Contribution to journal › Article › peer-review
Open Access -
Importance of As and Ga Balance in Achieving Long GaAs Nanowires by Selective Area Epitaxy
Chereau, E., Dubrovskii, V. G., Grégoire, G., Avit, G., Staudinger, P., Schmid, H., Bougerol, C., Coulon, P. M., Shields, P. A., Trassoudaine, A., Gil, E. & LaPierre, R. R., 7 Jun 2023, In: Crystal Growth and Design. 23, 6, p. 4401-4409 9 p.Research output: Contribution to journal › Article › peer-review
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Selective Area Growth of GaAs Nanowires and Microplatelet Arrays on Silicon by Hydride Vapor-Phase Epitaxy
Zeghouane, M., Grégoire, G., Chereau, E., Avit, G., Staudinger, P., Moselund, K. E., Schmid, H., Coulon, P. M., Shields, P., Isik Goktas, N., LaPierre, R. R., Trassoudaine, A., André, Y. & Gil, E., 5 Apr 2023, In: Crystal Growth and Design. 23, 4, p. 2120-2127 8 p.Research output: Contribution to journal › Article › peer-review
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Etching of the SiGaxN yPassivation Layer for Full Emissive Lateral Facet Coverage in InGaN/GaN Core-Shell Nanowires by MOVPE
Bosch, J., Coulon, P. M., Chenot, S., Portail, M., Durand, C., Tchernycheva, M., Shields, P. A., Zúñiga-Pérez, J. & Alloing, B., 7 Sept 2022, In: Crystal Growth and Design. 22, 9, p. 5206-5214 9 p.Research output: Contribution to journal › Article › peer-review
1 Citation (SciVal) -
Non-destructive imaging of residual strains in GaN and their effect on optical and electrical properties using correlative light-electron microscopy
Naresh-Kumar, G., Edwards, P. R., Batten, T., Nouf-Allehiani, M., Vilalta-Clemente, A., Wilkinson, A. J., Le Boulbar, E., Shields, P. A., Starosta, B., Hourahine, B., Martin, R. W. & Trager-Cowan, C., 21 Feb 2022, In: Journal of Applied Physics. 131, 7, 075303.Research output: Contribution to journal › Article › peer-review
Open Access1 Citation (SciVal)
Datasets
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Dataset for "Displacement Talbot Lithography: an alternative technique to fabricate nanostructured metamaterials"
Le Boulbar, E. (Creator) & Shields, P. (Project Leader), University of Bath, 15 May 2017
DOI: 10.15125/BATH-00363
Dataset
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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 Hybrid top-down/bottom-up fabrication of highly uniform and organized faceted AlN nanorod scaffold
Coulon, P. (Creator), Kusch, G. (Creator), Fletcher, P. (Other), Chausse, P. (Other), Martin, R. W. (Project Member) & Shields, P. (Project Leader), University of Bath, 5 Jul 2018
DOI: 10.15125/BATH-00522
Dataset
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Dataset for "AlN overgrowth of nano-pillar-patterned sapphire with different offcut angle by metalorganic vapor phase epitaxy"
Coulon, P. (Creator) & Shields, P. (Project Leader), University of Bath, 13 Nov 2019
DOI: 10.15125/BATH-00703
Dataset