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Research Output

2020

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, Weyers, M., 1 Feb 2020, In : Journal of Crystal Growth. 531, 125343.

Research output: Contribution to journalArticle

2 Citations (Scopus)

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 journalArticle

Open Access
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16 Downloads (Pure)

Influence of the reactor environment on the selective area thermal etching of GaN nanohole arrays

Coulon, P. M., Feng, P., Damilano, B., Vézian, S., Wang, T. & Shields, P. A., 27 Mar 2020, In : Scientific Reports. 10, 1, 5642.

Research output: Contribution to journalArticle

Open Access
1 Citation (Scopus)

Structural and luminescence imaging and characterisation of semiconductors in the scanning electron microscope

Trager-Cowan, C., Alasamari, A., Avis, W., Bruckbauer, J., Edwards, P. R., Ferenczi, G., Hourahine, B., Kotzai, A., Kraeusel, S., Kusch, G., Martin, R. W., McDermott, R., Naresh-Kumar, G., Nouf-Allehiani, M., Pascal, E., Thomson, D., Vespucci, S., Smith, M. D., Parbrook, P. J., Enslin, J. & 17 others, Mehnke, F., Kuhn, C., Wernicke, T., Kneissl, M., Hagedorn, S., Knauer, A., Walde, S., Weyers, M., Coulon, P. M., Shields, P. A., Bai, J., Gong, Y., Jiu, L., Zhang, Y., Smith, R. M., Wang, T. & Winkelmann, A., 25 Mar 2020, In : Semiconductor Science and Technology. 35, 5, 054001.

Research output: Contribution to journalArticle

Open Access
2019

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 journalArticle

Open Access
6 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, Kneissl, M., Kuhn, C., Wernicke, T., Hagedorn, S., Knauer, A., Kueller, V., Walde, S., Weyers, M., Coulon, P. M., Shields, P. A., Zhang, Y., Jiu, L., Gong, Y., Smith, R. M., Wang, T. & Winkelmann, A., 30 Oct 2019, In : Photonics Research. 7, 11, p. B73-B82 10 p.

Research output: Contribution to journalArticle

Open Access
2 Citations (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 journalArticle

Open Access
4 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 journalArticle

Open Access
6 Citations (Scopus)
8 Downloads (Pure)

Waveguide integrated GaN distributed Bragg reflector cavity using low-cost nanolithography

Jia, S., Le Boulbar, E. D., Balram, K. C., Pugh, J. R., Wang, T., Allsopp, D. W. E., Shields, P. A. & Cryan, M. J., 20 Nov 2019, In : Micro and Nano Letters. 14, 13, p. 1322-1327 6 p.

Research output: Contribution to journalArticle

Open Access
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44 Downloads (Pure)

“Double” displacement Talbot lithography: Fast, wafer-scale, direct-writing of complex periodic nanopatterns

Chausse, P., Boulbar, E. L., Coulon, P. M. & Shields, P. A., 28 Oct 2019, In : Optics Express. 27, 22, p. 32037-32046 10 p.

Research output: Contribution to journalArticle

Open Access
3 Citations (Scopus)
2018

Deep UV Emission from Highly Ordered AlGaN/AlN Core–Shell Nanorods

Coulon, P-M., Kusch, G., Martin, R. W. & Shields, P. A., 3 Oct 2018, In : ACS Applied Materials and Interfaces. 10, 39, p. 33441-33449 9 p.

Research output: Contribution to journalArticle

Open Access
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9 Citations (Scopus)
43 Downloads (Pure)

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 proceedingConference contribution

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 journalArticle

Open Access
7 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 journalArticle

Open Access
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7 Citations (Scopus)
8 Downloads (Pure)

Optical characterization of magnesium incorporation in p-GaN layers for core-shell nanorod light-emitting diodes

Gîrgel, I., Šatka, A., Priesol, J., Coulon, P. M., Le Boulbar, E. D., Batten, T., Allsopp, D. W. E. & Shields, P. A., 20 Mar 2018, In : Journal of Physics D: Applied Physics. 51, 15, 155103.

Research output: Contribution to journalArticle

Open Access
3 Citations (Scopus)
2017

Design and fabrication of enhanced lateral growth for dislocation reduction in GaN using nanodashes

Shields, P., Le Boulbar, E., Priesol, J., Nouf-Allehiani, M., Naresh-Kumar, G., Fox, S., Trager-Cowan, C., Šatka, A. & Allsopp, D., 15 May 2017, In : Journal of Crystal Growth. 466, p. 30-38 9 p.

Research output: Contribution to journalArticle

Open Access
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5 Citations (Scopus)
136 Downloads (Pure)
Open Access
File
3 Citations (Scopus)
151 Downloads (Pure)

Evolution of the m-plane Quantum Well Morphology and Composition within a GaN/InGaN Core-Shell Structure

Coulon, P-M., Hosseini-Vajargah, S., Bao, A., Edwards, P. R., Le Boulbar, E., Girgel, I., Martin, R. W., Humphreys, C., Oliver, R., Allsopp, D. & Shields, P. A., 1 Feb 2017, In : Crystal Growth and Design. 17, 2, p. 474-482 9 p.

Research output: Contribution to journalArticle

Open Access
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5 Citations (Scopus)
191 Downloads (Pure)

Optical properties and resonant cavity modes in axial InGaN/GaN nanotube microcavities

Coulon, P-M., Pugh, J. R., Athanasiou, M., Kusch, G., Le Boulbar, E. D., Sarua, A., Smith, R., Martin, R. W., Wang, T., Cryan, M., Allsopp, D. W. E. & Shields, P. A., 13 Nov 2017, In : Optics Express. 25, 23, p. 28246-28257 12 p.

Research output: Contribution to journalArticle

Open Access
9 Citations (Scopus)

Quantum well engineering in InGaN/GaN core-shell nanorod structures

Bryce, C. G., Le Boulbar, E. D., Coulon, P. M., Edwards, P. R., Gîrgel, I., Allsopp, D. W. E., Shields, P. A. & Martin, R. W., 27 Sep 2017, In : Journal of Physics D: Applied Physics. 50, 42, p. 1 - 7 7 p., 42LT01.

Research output: Contribution to journalArticle

Open Access
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3 Citations (Scopus)
158 Downloads (Pure)

Structural impact on the nanoscale optical properties of InGaN core-shell nanorods

Griffiths, J. T., Ren, C. X., Coulon, P. M., Le Boulbar, E. D., Bryce, C. G., Girgel, I., Howkins, A., Boyd, I., Martin, R. W., Allsopp, D. W. E., Shields, P. A., Humphreys, C. J. & Oliver, R. A., 24 Apr 2017, In : Applied Physics Letters. 110, 17, 172105.

Research output: Contribution to journalArticle

Open Access
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10 Citations (Scopus)
136 Downloads (Pure)
2016

Fabrication of high-aspect ratio GaN nanostructures for advanced photonic devices

Le Boulbar, E., Lewins, C., Allsopp, D., Bowen, C. & Shields, P., 5 Mar 2016, In : Microelectronic Engineering. 153, 5, p. 132-136

Research output: Contribution to journalArticle

Open Access
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18 Citations (Scopus)
159 Downloads (Pure)

Investigation of InGaN facet-dependent non-polar growth rates and composition for core-shell LEDs

Girgel, I., Edwards, P. R., Le Boulbar, E., Coulon, P-M., Sahonta, S-L., Allsopp, D., Martin, R. W., Humphreys, C. & Shields, P., 6 Mar 2016, In : Journal of Nanophotonics. 10, 1, 016010.

Research output: Contribution to journalArticle

Open Access
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8 Citations (Scopus)
105 Downloads (Pure)

Structural and optical emission uniformity of m-plane InGaN single quantum wells in core-shell nanorods

Le Boulbar, E., Hosseini-Vajargah, S., Edwards, P. R., Coulon, P-M., Girgel, I., Griffiths, I., Cherns, D., Martin, R. W., Humphreys, C., Bowen, C., Allsopp, D. & Shields, P., 6 Apr 2016, In : Crystal Growth and Design. 16, 4, p. 1907-1916

Research output: Contribution to journalArticle

Open Access
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17 Citations (Scopus)
119 Downloads (Pure)
2015

Investigation of facet-dependent InGaN growth for core-shell LEDs

Girgel, I., Edwards, P. R., Le Boulbar, E., Allsopp, D. W., Martin, R. W. & Shields, P. A., 13 Mar 2015, p. 93631V. 8 p.

Research output: Contribution to conferencePaper

Open Access
File
1 Citation (Scopus)
126 Downloads (Pure)
2014

Electron channeling contrast imaging of defects in III-nitride semiconductors

Trager-Cowan, C., Naresh-Kumar, G., Allehiani, N., Kraeusel, S., Hourahine, B., Vespucci, S., Thomson, D., Bruckbauer, J., Kusch, G., Edwards, P. R., Martin, R. W., Mauder, C., Day, A. P., Winkelmann, A., Vilalta-Clemente, A., Wilkinson, A. J., Parbrook, P. J., Kappers, M. J., Moram, M. A., Oliver, R. A. & 6 others, Humphreys, C. J., Shields, P., Le Boulbar, E. D., Maneuski, D., O'Shea, V. & Mingard, K. P., Aug 2014, In : Microscopy and Microanalysis. 20, 3, p. 1024-1025 2 p.

Research output: Contribution to journalArticle

Open Access
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108 Downloads (Pure)

Influence of stress on optical transitions in GaN nanorods containing a single InGaN/GaN quantum disk

Zhuang, Y. D., Bruckbauer, J., Shields, P. A., Edwards, P. R., Martin, R. W. & Allsopp, D. W. E., 7 Nov 2014, In : Journal of Applied Physics. 116, 17, 174305.

Research output: Contribution to journalArticle

Open Access
File
13 Citations (Scopus)
120 Downloads (Pure)

Strong photonic crystal behavior in regular arrays of core-shell and quantum disc InGaN/GaN nanorod light-emitting diodes

Lewins, C. J., Le Boulbar, E. D., Lis, S. M., Edwards, P. R., Martin, R. W., Shields, P. A. & Allsopp, D. W. E., 31 Jul 2014, In : Journal of Applied Physics. 116, 4, p. 1-7 7 p., 044305.

Research output: Contribution to journalArticle

Open Access
File
14 Citations (Scopus)
131 Downloads (Pure)
2013

Coalescence-induced planar defects in GaN layers grown on ordered arrays of nanorods by metal–organic vapour phase epitaxy

Huang, C-N., Shields, P. A., Allsopp, D. W. E. & Trampert, A., 2013, In : Philosophical Magazine. 93, 23, p. 3154-3166 13 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Fabrication and characterization of light-emitting diodes comprising highly ordered arrays of emissive InGaN/GaN nanorods

Zhuang, Y. D., Lewins, C. J., Lis, S., Shields, P. A. & Allsopp, D. W. E., 1 Jun 2013, In : IEEE Photonics Technology Letters. 25, 11, p. 1047-1049 3 p.

Research output: Contribution to journalArticle

15 Citations (Scopus)

Facet recovery and light emission from GaN/InGaN/GaN core-shell structures grown by metal organic vapour phase epitaxy on etched GaN nanorod arrays

Le Boulbar, E. D., Girgel, I., Lewins, C. J., Edwards, P. R., Martin, R. W., Šatka, A., Allsopp, D. W. E. & Shields, P. A., 3 Sep 2013, In : Journal of Applied Physics. 114, 9, 094302.

Research output: Contribution to journalArticle

Open Access
File
32 Citations (Scopus)
134 Downloads (Pure)

Light extracting properties of buried photonic quasi-crystal slabs in InGaN/GaN LEDs

Lewins, C. J., Allsopp, D. W. E., Shields, P. A., Gao, X., Humphreys, B. & Wang, W. N., May 2013, In : IEEE/OSA Journal of Display Technology. 9, 5, p. 333-338 6 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)

Optical properties of GaN nanorods containing a single or multiple InGaN quantum wells

Zhuang, Y. D., Lis, S., Bruckbauer, J., O'Kane, S. E. J., Shields, P. A., Edwards, P. R., Sarma, J., Martin, R. W. & Allsopp, D. W. E., 20 May 2013, In : Japanese Journal of Applied Physics. 52, 8 PART 2

Research output: Contribution to journalArticle

6 Citations (Scopus)

Optical studies of the surface effects from the luminescence of single GaN/InGaN nanorod light emitting diodes fabricated on a wafer scale

Chan, C. C. S., Reid, B. P. L., Taylor, R. A., Jia, W., Zhuang, Y. D., Shields, P. A. & Allsopp, D. W. E., 18 Mar 2013, In : Applied Physics Letters. 102, 11, 111906.

Research output: Contribution to journalArticle

15 Citations (Scopus)

Photoluminescence of single GaN/InGaN nanorod light emitting diode fabricated on a wafer scale

Chan, C. C. S., Zhuang, Y., Reid, B. P. L., Jia, W., Holmes, M. J., Alexander-webber, J. A., Nakazawa, S., Shields, P. A., Allsopp, D. W. E. & Taylor, R. A., Aug 2013, In : Japanese Journal of Applied Physics. 52, No 8, Part 2, 4 p., 08JE20.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Quantitative analysis of cathodoluminescence phenomena in InGaN/GaN QW by Monte Carlo method

Priesol, J., Šatka, A., Uherek, F., Donoval, D., Shields, P. & Allsopp, D. W. E., 15 Mar 2013, In : Applied Surface Science. 269, p. 155-160

Research output: Contribution to journalArticle

2 Citations (Scopus)

Strain evolution in GaN nanowires: From free-surface objects to coalesced templates

Hugues, M., Shields, P. A., Sacconi, F., Mexis, M., Auf Der Maur, M., Cooke, M., Dineen, M., Di Carlo, A., Allsopp, D. W. E. & Zúñiga-pérez, J., 28 Aug 2013, In : Journal of Applied Physics. 114, 8, 9 p., 084307.

Research output: Contribution to journalArticle

Open Access
File
39 Citations (Scopus)
113 Downloads (Pure)
2012

Angle dependent optical properties of polymer films with a biomimetic anti-reflecting surface replicated from cylindrical and tapered nanoporous alumina

Hubbard, G., Nasir, M. E., Shields, P., Bowen, C. R., Satka, A., Parsons, K. P., Holmes, N. H. & Allsopp, D. W. E., 20 Apr 2012, In : Nanotechnology. 23, 15, 8 p., 155302.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Cathodoluminescence studies of GaN coalesced from nanopyramids selectively grown by MOVPE

Lethy, K. J., Edwards, P. R., Liu, C., Shields, P. A., Allsopp, D. W. E. & Martin, R. W., 2012, In : Semiconductor Science and Technology. 27, 8, 085010.

Research output: Contribution to journalArticle

Open Access
File
6 Citations (Scopus)
122 Downloads (Pure)

Effect of coalescence layer thickness on the properties of thin-chip InGaN/GaN light emitting diodes with embedded photonic quasi-crystal structures

Shields, P. A., Charlton, M. D. B., Lewins, C. J., Gao, X., Allsopp, D. W. E., Wang, W. N. & Humphreys, B., Mar 2012, In : Physica Status Solidi (A). 209, 3, p. 451-455 5 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Fabrication and properties of etched GaN nanorods

Shields, P., Hugues, M., Zúñiga-Pérez, J., Cooke, M., Dineen, M., Wang, W., Causa, F. & Allsopp, D., Mar 2012, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 9, 3-4, p. 631-634 4 p.

Research output: Contribution to journalArticle

23 Citations (Scopus)

Growth of crack-free GaN epitaxial thin films on composite Si(111)/polycrystalline diamond substrates by MOVPE

Jiang, Q., Edwards, M. J., Shields, P. A., Allsopp, D. W. E., Bowen, C. R., Wang, W. N., Tóth, L., Pécz, B., Srnanek, R., Satka, A. & Kovac, J., Mar 2012, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 9, 3-4, p. 650-653 4 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)

High-resolution cathodoluminescence hyperspectral imaging of nitride nanostructures

Edwards, P. R., Jagadamma, L. K., Bruckbauer, J., Martin, R. W., Liu, C., Shields, P., Allsopp, D. & Wang, T., Dec 2012, In : Microscopy and Microanalysis. 18, 6, p. 1212-1219 8 p.

Research output: Contribution to journalArticle

34 Citations (Scopus)

Nano-Imprinting of Highly Ordered Nano-Pillars of Lithium Niobate (LiNbO3)

Lewis, R. W. C., Allsopp, D. W. E., Shields, P., Šatka, A., Yu, S., Topolov, V. Y. & Bowen, C. R., 1 Jan 2012, In : Ferroelectrics. 429, 1, p. 62-68 7 p.

Research output: Contribution to journalArticle

Open Access
File
7 Citations (Scopus)
145 Downloads (Pure)

Optical studies of quantum dot-like emission from localisation centres in InGaN/GaN nanorod array LEDs

Chan, C. C. S., Shields, P. A., Holmes, M. J., Zhuang, Y., Wang, X., Reid, B. P. L., Kim, H., Allsopp, D. W. E. & Taylor, R. A., Mar 2012, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 9, 3-4, p. 635-638 4 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
2011

Advances in nano-enabled GaN photonic devices

Wang, W. N., Shields, P. A., Liu, C., Allsopp, D. W. E. & Causa, F., 2011, In : Proceedings of SPIE - The International Society for Optical Engineering. 7945, 794523.

Research output: Contribution to journalArticle

1 Citation (Scopus)

Embedding manganese doped zinc sulfide quantum dots in gallium nitride LEDs based on photonic crystals

Silver, J., Yan, X., Withnall, R., Fern, G., Sumner, J., Shields, P. & Allsopp, D., 2011, Proceedings of the International Display Workshops. Vol. 3. p. 1405-1408 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Incorporating cerium doped yttrium aluminium garnet (YAG:Ce) nanophosphors into gallium nitride LEDs based on photonic crystals

Withnall, R., Silver, J., Catherall, C., Ireland, T. G., Fern, G. R., Sumner, J. W. S., Shields, P., Allsopp, D., Reip, P. W. & Subbiah, S., 2011, Proceedings of the International Display Workshops. Vol. 3. p. 1413-1416 4 p.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Nanoimprint lithography resist profile inversion for lift-off applications

Shields, P. A. & Allsopp, D. W. E., Sep 2011, In : Microelectronic Engineering. 88, 9, p. 3011-3014 4 p.

Research output: Contribution to journalArticle

Open Access
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24 Citations (Scopus)
122 Downloads (Pure)

Nanopendeo coalescence overgrowth of GaN on etched nanorod array

Shields, P., Liu, C., Atka, A., Trampert, A., Zuniga-Perez, J., Alloing, B., Hako, D., Uherek, F., Wang, W., Causa, F. & Allsopp, D., Jul 2011, In : Physica Status Solidi (C) Current Topics in Solid State Physics. 8, 7-8, p. 2334-2336 3 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)