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  • Robert Martin

Zinc-blende and wurtzite AlxGa1-xN bulk crystals grown by molecular beam epitaxy

Novikov, S. V., Staddon, C. R., Luckert, F., Edwards, P. R., Martin, R. W., Kent, A. J. & Foxon, C. T., 1 Jul 2012, In : Journal of Crystal Growth. 350, 1, p. 80-84 5 p.

Research output: Contribution to journalArticle

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

Zeeman splittings of the 5D0–7F2 transitions of Eu3+ ions implanted into GaN

Kachkanov, V., O'Donnell, K. P., Rice, C., Wolverson, D., Martin, R. W., Lorenz, K., Alves, E. & Bockowski, M., 2011, In : MRS Online Proceedings Library . 1290, 5 p.

Research output: Contribution to journalArticle

Open Access
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5 Citations (Scopus)
186 Downloads (Pure)
Open Access
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8 Downloads (Pure)

Wurtzite AlxGa1-xN bulk crystals grown by molecular beam epitaxy

Novikov, S. V., Staddon, C. R., Powell, R. E. L., Akimov, A. V., Luckert, F., Edwards, P. R., Martin, R. W., Kent, A. J. & Foxon, C. T., 1 May 2011, In : Journal of Crystal Growth. 322, 1, p. 23-26 4 p.

Research output: Contribution to journalArticle

9 Citations (Scopus)

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

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

The g-factor of CuGaSe2 studied by circularly polarised magneto-reflectance

Yakushev, M. V., Sulimov, M. A., Faugeras, C., Mudryi, A. V. & Martin, R. W., 19 Feb 2020, In : Journal of Physics D: Applied Physics. 53, 17, 4 p., 17LT02.

Research output: Contribution to journalArticle

The band structure of CuInTe2 studied by optical reflectivity

Yakushev, M. V., Mudryi, A. V., Kärber, E., Edwards, P. R. & Martin, R. W., 13 Feb 2019, In : Applied Physics Letters. 114, 6, 4 p., 062103.

Research output: Contribution to journalArticle

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

Temperature-dependent hysteresis of the emission spectrum of Eu-implanted, Mg-doped HVPE GaN

O'Donnell, K. P., Martin, R. W., Edwards, P. R., Lorenz, K., Alves, E. & Bockowski, M., 4 Dec 2013, The Physics of Semiconductors: Proceedings of the 31st International Conference on the Physics of Semiconductors (ICPS) 2012. Ihn, T., Rössler, C. & Kozikov, A. (eds.). Vol. 1566.

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

3 Citations (Scopus)

Tellurium n-type doping of highly mismatched amorphous GaN1-xAsx alloys in plasma-assisted molecular beam epitaxy

Novikov, S. V., Ting, M., Yu, K. M., Sarney, W. L., Martin, R. W., Svensson, S. P., Walukiewicz, W. & Foxon, C. T., 15 Oct 2014, In : Journal of Crystal Growth. 404, p. 9-13 5 p.

Research output: Contribution to journalArticle

Open Access
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2 Citations (Scopus)
51 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., 28 Apr 2017, In : Applied Physics Letters. 110, 5 p., 172105.

Research output: Contribution to journalLetter

Open Access
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10 Citations (Scopus)
142 Downloads (Pure)

Structural and optical properties of Ga auto-incorporated InAlN epilayers

Taylor, E., Smith, M. D., Sadler, T. C., Lorenz, K., Li, H. N., Alves, E., Parbrook, P. J. & Martin, R. W., 15 Dec 2014, In : Journal of Crystal Growth. 408, p. 97-101 5 p.

Research output: Contribution to journalArticle

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

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

Le Boulbar, E. M. D., Edwards, P. R., Vajargah, S. H., Griffiths, I., Gîrgel, I., Coulon, P. . M., Cherns, D., Martin, R. W., Humphreys, C. J., Bowen, C. R., Allsopp, D. W. E. & Shields, P. A., 6 Apr 2016, In : Crystal Growth and Design. 16, 4, p. 1907–1916 10 p.

Research output: Contribution to journalArticle

Open Access
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17 Citations (Scopus)
28 Downloads (Pure)

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

Trager-Cowan, C., Alasmari, A., Avis, W., Bruckbauer, J., Edwards, P. R., Ferenczi, G., Hourahine, B., Kotzai, A., Kraeusel, S., Kusch, G., Martin, R. W., McDermott, R., Gunasekar, N., 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., Bai, J., Gong, Y., Jiu, L., Zhang, Y., Smith, R., Wang, T. & Winkelmann, A., 25 Mar 2020, In : Semiconductor Science and Technology. 35, 5, 15 p., 054001.

Research output: Contribution to journalArticle

Open Access
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1 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., 2014, In : Journal of Applied Physics. 116, 4, 7 p., 044305.

Research output: Contribution to journalArticle

Open Access
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13 Citations (Scopus)
140 Downloads (Pure)

Strong interband Faraday rotation in 3D topological insulator Bi2Se3

Ohnoutek, L., Hakl, M., Veis, M., Piot, B. A., Faugeras, C., Martinez, G., Yakushev, M. V., Martin, R. W., Drasar, C., Materna, A., Strzelecka, G., Hruban, A., Potemski, M. & Orlita, M., 11 Jan 2016, In : Scientific Reports. 6, 9 p., 19087.

Research output: Contribution to journalArticle

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

Strain relaxation in InGaN/GaN micro-pillars evidenced by high resolution cathodoluminescence hyperspectral imaging

Xie, E. Y., Chen, Z. Z., Edwards, P. R., Gong, Z., Liu, N. Y., Tao, Y. B., Zhang, Y. F., Chen, Y. J., Watson, I. M., Gu, E., Martin, R. W., Zhang, G. Y. & Dawson, M. D., 5 Jul 2012, In : Journal of Applied Physics. 112, 1, 7 p., 013107.

Research output: Contribution to journalArticle

Open Access
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17 Citations (Scopus)
181 Downloads (Pure)

Stimulated emission and optical properties of solid solutions of Cu(In,Ga)Se2 direct band gap semiconductors

Svitsiankou, I. E., Pavlovskii, V. N., Lutsenko, E. V., Yablonskii, G. P., Mudryi, A. V., Borodavchenko, O. M., Zhivulko, V. D., Yakushev, M. V. & Martin, R., 31 May 2018, In : Journal of Applied Spectroscopy. 85, 2, p. 267-273 7 p.

Research output: Contribution to journalArticle

Open Access
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10 Downloads (Pure)

Stimulated emission and lasing in Cu(In,Ga)Se2 thin films

Svitsiankou, I. E., Pavlovskii, V. N., Lutsenko, EV., Yablonskii, G. P., Mudryi, A. V., Zhivulko, VD., Yakushev, M. V. & Martin, R. W., 1 Feb 2016, In : Journal of Physics D: Applied Physics. 49, 9, 5 p., 095106.

Research output: Contribution to journalArticle

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

Spectroscopic and electrical signatures of acceptor states in solution processed Cu2ZnSn(S,Se)4 solar cells

Tiwari, D., Skidchenko, E., Bowers, J. W., Yakushev, M. V., Martin, R. W. & Fermin, D. J., 25 Oct 2017, In : Journal of Materials Chemistry. C . 5, 48, p. 12720-12727 8 p.

Research output: Contribution to journalArticle

Open Access
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11 Citations (Scopus)
17 Downloads (Pure)

Spatially-resolved optical and structural properties of semi-polar (11-22) AlxGa1-xN with x up to 0.56

Bruckbauer, J., Li, Z., Naresh-Kumar, G., Warzecha, M., Edwards, P. R., Jiu, L., Gong, Y., Bai, J., Wang, T., Trager-Cowan, C. & Martin, R. W., 7 Sep 2017, In : Scientific Reports. 7, 10 p., 10804.

Research output: Contribution to journalArticle

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

Spatial clustering of defect luminescence centers in Si-doped low resistivity Al0.82Ga0.18N

Kusch, G., Nouf-Allehiani, M., Mehnke, F., Kuhn, C., Edwards, P. R., Wernicke, T., Knauer, A., Kueller, V., Naresh-Kumar, G., Weyers, M., Kneissl, M., Trager-Cowan, C. & Martin, R. W., 17 Aug 2015, In : Applied Physics Letters. 107, 7, 4 p., 072103.

Research output: Contribution to journalArticle

Open Access
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12 Citations (Scopus)
101 Downloads (Pure)

Site controlled red-yellow-green light emitting InGaN quantum discs on nano-tipped GaN rods

Conroy, M., Li, H., Kusch, G., Zhao, C., Ooi, B., Edwards, P. R., Martin, R. W., Holmes, J. D. & Parbrook, P. J., 26 May 2016, In : Nanoscale. 8, 21, p. 11019-11026 8 p.

Research output: Contribution to journalArticle

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

Self-healing thermal annealing: surface morphological restructuring control of GaN nanorods

Conroy, M., Li, H., Zubialevich, V. Z., Kusch, G., Schmidt, M., Collins, T., Glynn, C., Martin, R. W., O'Dwyer, C., Holmes, J. D., Parbrook, P. J. & Morris, M. D., 7 Dec 2016, In : Crystal Growth and Design. 16, 12, p. 6769-6775 7 p.

Research output: Contribution to journalArticle

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

Scanning electron microscopy 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
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2 Citations (Scopus)
Open Access
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RBS-channeling study of radiation damage in Ar+ implanted CuInSe2 crystals

Yakushev, M. V., Volkov, V. A., Mursakulov, N. N., Sabzaliyeva, C. E. & Martin, R. W., 1 Sep 2016, In : Journal of Vacuum Science and Technology A. 34, 5, 6 p., 051203.

Research output: Contribution to journalArticle

Open Access
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1 Citation (Scopus)
19 Downloads (Pure)

Radiative recombination in Cu2ZnSnSe4 thin films with Cu deficiency and Zn excess

Yakushev, M. V., Márquez-Prieto, J., Forbes, I., Edwards, P. R., Zhivulko, V. D., Mudryi, A. V., Krustok, J. & Martin, R. W., 2 Nov 2015, In : Journal of Physics D: Applied Physics. 48, 47, 7 p., 475109.

Research output: Contribution to journalArticle

Open Access
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12 Citations (Scopus)
87 Downloads (Pure)

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, 6 p., 42LT01.

Research output: Contribution to journalArticle

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

Probing light emission from quantum wells within a single nanorod

Bruckbauer, J., Edwards, P. R., Bai, J., Wang, T. & Martin, R. W., 19 Aug 2013, In : Nanotechnology. 24, 36, 7 p., 365704.

Research output: Contribution to journalArticle

Open Access
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10 Citations (Scopus)
164 Downloads (Pure)

Peculiarities in the pressure dependence of photoluminescence in InAlN

Kaminska, A., Nowakowski, P., Staszczak, G., Suski, T., Suchocki, A., Carlin, J. F., Grandjean, N., Martin, R. & Yamamoto, A., 1 Apr 2013, In : Physica Status Solidi B. 250, 4, p. 677-682 6 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

Optical spectroscopy studies of Cu2ZnSnSe4 thin films

Yakushev, M. V., Forbes, I., Mudryi, A. V., Grossberg, M., Krustok, J., Beattie, N. S., Moynihan, M., Rockett, A. & Martin, R. W., 1 May 2015, In : Thin Solid Films. 582, p. 154-157 4 p.

Research output: Contribution to journalArticle

Open Access
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10 Citations (Scopus)
60 Downloads (Pure)

Optical properties of high quality Cu2ZnSnSe4 thin films

Luckert, F., Hamilton, D. I., Yakushev, M. V., Beattie, N. S., Zoppi, G., Moynihan, M., Forbes, I., Karotki, A. V., Mudryi, A. V., Grossberg, M., Krustok, J. & Martin, R. W., 8 Aug 2011, In : Applied Physics Letters. 99, 6, p. - 3 p., 062104.

Research output: Contribution to journalArticle

Open Access
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80 Citations (Scopus)
202 Downloads (Pure)

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, 5 p., 08JE11.

Research output: Contribution to journalArticle

Open Access
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6 Citations (Scopus)
268 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
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9 Citations (Scopus)
12 Downloads (Pure)

Optical investigation of semi-polar (11-22) AlxGa1-xN with high Al composition

Li, Z., Wang, L., Jiu, L., Bruckbauer, J., Gong, Y., Zhang, Y., Bai, J., Martin, R. W. & Wang, T., 27 Feb 2017, In : Applied Physics Letters. 110, 9, 5 p., 091102.

Research output: Contribution to journalArticle

Open Access
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2 Citations (Scopus)
75 Downloads (Pure)

Nature and origin of V-defects present in metalorganic vapor phase epitaxy-grown (InxAl1-x)N layers as a function of InN content, layer thickness and growth parameters

Vennegues, P., Diaby, B. S., Kim-Chauveau, H., Bodiou, L., Schenk, H. P. D., Frayssinet, E., Martin, R. W. & Watson, I. M., 15 Aug 2012, In : Journal of Crystal Growth. 353, 1, p. 108-114 7 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)

Multi-wavelength emission from a single InGaN/GaN nanorod analyzed by cathodoluminescence hyperspectral imaging

Kusch, G., Conroy, M., Li, H., Edwards, P. R., Zhao, C., Ooi, B. S., Pugh, J., Cryan, M. J., Parbrook, P. J. & Martin, R. W., 29 Jan 2018, In : Scientific Reports. 8, 1, 8 p., 1742.

Research output: Contribution to journalArticle

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

Monolithic multiple colour emission from InGaN grown on patterned non-polar GaN

Gong, Y., Jiu, L., Bruckbauer, J., Bai, J., Martin, R. W. & Wang, T., 30 Jan 2019, In : Scientific Reports. 9, 1, 7 p., 986.

Research output: Contribution to journalArticle

Open Access
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1 Citation (Scopus)
10 Downloads (Pure)

Molecular beam epitaxy of highly mismatched N-rich GaNSb and InNAs alloys

Novikov, S. V., Yu, K. M., Levander, A., Detert, D., Sarney, W. L., Liliental-Weber, Z., Shaw, M., Martin, R. W., Svensson, S. P., Walukiewicz, W. & Foxon, C. T., 1 May 2013, In : Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures. 31, 3, 6 p.

Research output: Contribution to journalArticle

Open Access
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10 Citations (Scopus)
178 Downloads (Pure)

Molecular beam epitaxy of GaN1–xBix alloys with high bismuth content

Novikov, S. V., Yu, K. M., Levander, A. X., Liliental-Weber, Z., dos Reis, R., Kent, A. J., Tseng, A., Dubon, O. D., Wu, J., Denlinger, J., Walukiewicz, W., Luckert, F., Edwards, P., Martin, R. & Foxon, C. T., 20 Jan 2012, In : Physica Status Solidi A: Applications and Materials Science. 209, 3, p. 419-423 5 p.

Research output: Contribution to journalArticle

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9 Citations (Scopus)
198 Downloads (Pure)

Molecular beam epitaxy of free-standing wurtzite AlxGa1xN layers

Novikov, S. V., Staddon, C. R., Martin, R., Kent, A. J. & Foxon, C. T., 21 Feb 2015, In : Journal of Crystal Growth. 425, p. 125 128 p.

Research output: Contribution to journalArticle

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

Molecular beam epitaxy as a method for the growth of free-standing bulk zinc-blende GaN and AlGaN crystals

Novikov, S. V., Staddon, C. R., Foxon, C. T., Luckert, F., Edwards, P., Martin, R. & Kent, A. J., 15 May 2011, In : Journal of Crystal Growth. 323, 1, p. 80-83 4 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Mapping localized surface plasmons within silver nanocubes using cathodoluminescence hyperspectral imaging

Edwards, P., Sleith, D., Wark, A. & Martin, R., 28 Jul 2011, In : Journal of Physical Chemistry C. 115, 29, p. 14031–14035 5 p.

Research output: Contribution to journalArticle

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22 Citations (Scopus)
243 Downloads (Pure)

Luminescence behavior of semipolar (10 11) InGaN/GaN "bow-tie" structures on patterned Si substrates

Bruckbauer, J., Trager-Cowan, C., Hourahine, B., Winkelmann, A., Vennéguès, P., Ipsen, A., Yu, X., Zhao, X., Wallace, M. J., Edwards, P. R., Naresh-Kumar, G., Hocker, M., Bauer, S., Müller, R., Bai, J., Thonke, K., Wang, T. & Martin, R. W., 17 Jan 2020, In : Journal of Applied Physics. 127, 3, 8 p., 035705.

Research output: Contribution to journalArticle

Open Access
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2 Downloads (Pure)

Linear oligofluorene-BODIPY structures for fluorescence applications

Findlay, N. J., Orofino-Pena, C., Bruckbauer, J., Elmasly, S. E. T., Arumugam, S., Inigo, A. R., Kanibolotsky, A. L., Martin, R. W. & Skabara, P. J., 2013, In : Journal of Materials Chemistry. C . 1, 11, p. 2249-2256 8 p.

Research output: Contribution to journalArticle

Open Access
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15 Citations (Scopus)
90 Downloads (Pure)

Light-emitting diodes: an organic down-converting material for white-light emission from hybrid LEDs (Adv. Mater. 43/2014)

Findlay, N. J., Bruckbauer, J., Inigo, A. R., Breig, B., Arumugam, S., Wallis, D. J., Martin, R. W. & Skabara, P. J., 19 Nov 2014, In : Advanced Materials. 26, 43, p. 7415 1 p.

Research output: Contribution to journalArticle

Open Access
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56 Downloads (Pure)

Landau levels of the C-exciton in CuInSe2 studied by magneto-transmission

Yakushev, M. V., Rodina, A. V., Shuchalin, G. M., Seisian, R. P., Abdullaev, M. A., Rockett, A., Zhivulko, V. D., Mudryi, A. V., Faugeras, C. & Martin, R. W., Oct 2014, In : Applied Physics Letters. 105, 14, 4 p., 142103.

Research output: Contribution to journalArticle

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

Investigation of the structural, optical and electrical properties of Cu3BiS3 semiconducting thin films

Yakushev, M. V., Maiello, P., Raadik, T., Shaw, M. J., Edwards, P. R., Krustok, J., Mudryi, A. V., Forbes, I. & Martin, R. W., 2014, In : Energy Procedia. 60, p. 166-172 7 p.

Research output: Contribution to journalArticle

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

Investigation of indium gallium nitride facet-dependent nonpolar growth rates and composition for core–shell light-emitting diodes

Gîrgel, I., Edwards, P. R., Le Boulbar, E., Coulon, P-M., Sahonta, S-L., Allsopp, D. W. E., Martin, R. W., Humphreys, C. J. & Shields, P. A., 7 Mar 2016, In : Journal of Nanophotonics. 10, 1, 11 p., 016010.

Research output: Contribution to journalArticle

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