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  • Kevin O'Donnell

Validity of Vegard's rule for Al1-xInxN (0.08<x<0.28) thin films grown on GaN templates

Magalhães, S., Franco, N., Watson, I. M., Martin, R. W., O'Donnell, K. P., Schenk, H. P. D., Tang, F., Sadler, T. C., Kappers, M. J., Oliver, R. A., Monteiro, T., Martin, T. L., Bagot, P. A. J., Moody, M. P., Alves, E. & Lorenz, K., 28 Apr 2017, In : Journal of Physics D: Applied Physics. 50, 20 p., 205107.

Research output: Contribution to journalArticle

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5 Citations (Scopus)
25 Downloads (Pure)

Room temperature cathodoluminescence quenching of Er3+ in AlNOEr

Brien, V., Edwards, P. R., Boulet, P. & O'Donnell, K. P., 31 Jan 2019, In : Journal of Luminescence. 205, p. 97-101 5 p.

Research output: Contribution to journalArticle

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6 Downloads (Pure)

Luminescence of Eu3+ in GaN(Mg, Eu): transitions from the 5D1 level

Singh, A. K., O'Donnell, K. P., Edwards, P. R., Cameron, D., Lorenz, K., Kappers, M. J., Boćkowski, M., Yamaga, M. & Prakash, R., 14 Dec 2017, In : Applied Physics Letters. 111, 24, 4 p., 241105.

Research output: Contribution to journalArticle

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

Hysteretic photochromic switching of Eu-Mg defects in GaN links the shallow transient and deep ground states of the Mg acceptor

Singh, A. K., O'Donnell, K. P., Edwards, P. R., Lorenz, K., Kappers, M. J. & Bokowski, M., 3 Feb 2017, In : Scientific Reports. 7, 6 p., 41982.

Research output: Contribution to journalArticle

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

Hysteretic photochromic switching (HPS) in doubly doped GaN(Mg):Eu—a summary of recent results

Edwards, P. R., O'Donnell, K. P., Singh, A. K., Cameron, D., Lorenz, K., Yamaga, M., Leach, J. H., Kappers, M. J. & Boćkowski, M., 22 Sep 2018, In : Materials. 11, 10, 9 p., 1800.

Research output: Contribution to journalArticle

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10 Downloads (Pure)

Extended X-ray absorption fine structure study of Er bonding in AlNO:Erx films with x <= 3.6%

Katsikini, M., Katchkanov, V., Boulet, P., Edwards, P. R., O'Donnell, K. P. & Brien, V., 28 Aug 2018, In : Journal of Applied Physics. 124, 8, 5 p., 085705.

Research output: Contribution to journalArticle

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

Eu-Mg defects and donor-acceptor pairs in GaN: photodissociation and the excitation transfer problem

Singh, A. K., O'Donnell, K. P., Edwards, P. R., Lorenz, K., Leach, J. H. & Boćkowski, M., 22 Jan 2018, In : Journal of Physics D: Applied Physics. 51, 6, 5 p., 065106.

Research output: Contribution to journalArticle

Open Access
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4 Citations (Scopus)
27 Downloads (Pure)

Crystalfield symmetries of luminescent Eu3+ centers in GaN: the importance of the 5D0 to 7F1 transition

O'Donnell, K. P., Edwards, P. R., Yamaga, M., Lorenz, K., Kappers, M. J. & Boćkowski, M., 11 Jan 2016, In : Applied Physics Letters. 108, 2, 5 p., 022102.

Research output: Contribution to journalArticle

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

Acceptor state anchoring in gallium nitride

Cameron, D., O'Donnell, K. P., Edwards, P. R., Peres, M., Lorenz, K., Kappers, M. J. & Boćkowski, M., 9 Mar 2020, In : Applied Physics Letters. 116, 10, 4 p., 102105.

Research output: Contribution to journalArticle

Open Access
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5 Downloads (Pure)