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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Network
Recent external collaboration on country level. Dive into details by clicking on the dots.
Projects 2010 2021
Manufacturing of Nano-Engineered III-N Semiconductors
Shields, P., Allsopp, D. & Wang, W.
1/05/15 → 28/02/21
Project: Research council
manufacturing
nitrides
wafers
gallium nitrides
light emitting diodes
Manufacturing of Nano-Engineered III-N Semiconductors - Equipment
Shields, P. & Allsopp, D.
1/02/15 → 31/01/20
Project: Research council
lithography
manufacturing
nitrides
industries
wafers
Oxides
Indium
Touch screens
Solar cells
Electrodes
Nanoscale Sensors for Healthcare and the Environment (NANOSENSE)
Shields, P. & Allsopp, D.
13/10/14 → 13/04/15
Project: Research-related funding
High Intensity Light Emitting Diodes (LEDs) for Advanced Projection Systems
Allsopp, D. & Shields, P.
2/12/13 → 30/11/15
Project: Central government, health and local authorities
Research Output 1999 2019
Understanding the resolution limit of Displacement Talbot Lithography
Chausse, P., Le Boulbar, E., Lis, S. & Shields, P., 15 Jan 2019, (Accepted/In press) In : Optics Express.Research output: Contribution to journal › Article
2
Citations
(Scopus)
Deep UV Emission from Highly Ordered AlGaN/AlN Core–Shell Nanorods
Coulon, P-M., Kusch, G., Martin, R. W. & Shields, P. A., 6 Sep 2018, In : ACS Applied Materials and Interfaces.Research output: Contribution to journal › Article
Open Access
File
Nanorods
Nanostructures
Light emitting diodes
Stark effect
Fabrication
GaN distributed bragg reflector cavity for sensing applications
Jia, S., Le Boulbar, E. D., Balram, K., Pugh, J. R., Wang, T., Allsopp, D. W. E., Shields, P. A. & Cryan, M. J., 1 Jan 2018, Frontiers in Optics, FIO 2018. OSA Publishing, Vol. Part F114-FIO 2018.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
1
Citation
(Scopus)
Hybrid top-down/bottom-up fabrication of a highly uniform and organized faceted AlN nanorod scaffold
Coulon, P-M., Kusch, G., Fletcher, P., Chausse, P., Martin, R. W. & Shields, P. A., 5 Jul 2018, In : Materials. 11, 7, 1140.Research output: Contribution to journal › Article
Open Access
Nanorods
Scaffolds
Fabrication
Dry etching
Wet etching
3
Citations
(Scopus)
Hybrid top-down/bottom-up fabrication of regular arrays of AlN nanorods for deep-UV core-shell LEDs
Coulon, P-M., Kusch, G., Le Boulbar, E., Chausse, P., Bryce, C. G., Martin, R. W. & Shields, P., 1 May 2018, In : Physica Status Solidi (B). 255, 5, 9 p., 1700445 .Research output: Contribution to journal › Article
Nanorods
nanorods
Light emitting diodes
light emitting diodes
Fabrication
Datasets
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
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
Dataset for Structural and optical emission uniformity of m-plane InGaN single quantum wells in core-shell nanorods
Le Boulbar, E. (Creator), 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
Dataset for Optical characterization of magnesium incorporation in p-GaN layers for core-shell nanorods
Girgel, I. (Creator), Šatka, A. (Creator), Priesol, J. (Creator), Coulon, P. (Creator), Le Boulbar, E. (Creator), Batten, T. (Creator), Allsopp, D. (Creator), Shields, P. (Creator), University of Bath, 27 Mar 2018
DOI: 10.15125/BATH-00207
Dataset
Dataset for Investigation of InGaN facet-dependent non-polar growth rates and composition for core-shell LEDs
Shields, P. (Creator), Girgel, I. (Creator), Le Boulbar, E. (Creator), Coulon, P. (Creator), Sahonta, S. (Creator), Allsopp, D. (Creator), Humphreys, C. (Creator), University of Bath, 27 Jan 2016
DOI: 10.15125/BATH-00172
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