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20032020

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2020

Defect-mediated metastability and carrier lifetimes in polycrystalline (Ag,Cu)(In,Ga)Se2 absorber materials

Ferguson, A., Farshchi, R., Paul, P. K., Dippo, P., Bailey, J., Poplavskyy, D., Khanam, A., Tuomisto, F., Arehart, A. & Kuciauskas, D., 2 Jun 2020, In : Journal of Applied Physics. 127, 11 p., 215702.

Research output: Contribution to journalArticleScientificpeer-review

Effect of interstitial carbon on the evolution of early-stage irradiation damage in equi-atomic FeMnNiCoCr high-entropy alloys

Lu, E., Makkonen, I., Mizohata, K., Li, Z., Räisänen, J. & Tuomisto, F., 14 Jan 2020, In : Journal of Applied Physics. 127, 2, p. 1-7 7 p., 025103.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)

Effect of Mn and Mg dopants on vacancy defect formation in ammonothermal GaN

Heikkinen, T., Pavlov, J., Ceponis, T., Gaubas, E., Zając, M. & Tuomisto, F., 1 Oct 2020, In : Journal of Crystal Growth. 547, 125803.

Research output: Contribution to journalArticleScientificpeer-review

In Situ Positron Annihilation Spectroscopy Analysis on Low-Temperature Irradiated Semiconductors, Challenges and Possibilities

Slotte, J., Kilpeläinen, S., Segercrantz, N., Mizohata, K., Räisänen, J. & Tuomisto, F., 2020, In : Physica Status Solidi (A) Applications and Materials Science. 6 p., 200023.

Research output: Contribution to journalArticleScientificpeer-review

Open Access

Interfacial N Vacancies in GaN/(Al,Ga)N/GaN Heterostructures

Prozheeva, V., Makkonen, I., Li, H., Keller, S., Mishra, U. K. & Tuomisto, F., Mar 2020, In : Physical Review Applied. 13, 4, p. 1-7 7 p., 044034.

Research output: Contribution to journalArticleScientificpeer-review

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

Segregation of Ni at early stages of radiation damage in NiCoFeCr solid solution alloys

Tuomisto, F., Makkonen, I., Heikinheimo, J., Granberg, F., Djurabekova, F., Nordlund, K., Velisa, G., Bei, H., Xue, H., Weber, W. J. & Zhang, Y., 1 Sep 2020, In : Acta Materialia. 196, p. 44-51 8 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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31 Downloads (Pure)

TiSrantisite: An abundant point defect in SrTiO3

Karjalainen, A., Prozheeva, V., Makkonen, I., Guguschev, C., Markurt, T., Bickermann, M. & Tuomisto, F., 28 Jun 2020, In : Journal of Applied Physics. 127, 24, 9 p., 245702.

Research output: Contribution to journalArticleScientificpeer-review

Vacancy cluster growth and thermal recovery in hydrogen-irradiated tungsten

Zibrov, M., Egger, W., Heikinheimo, J., Mayer, M. & Tuomisto, F., 1 Apr 2020, In : Journal of Nuclear Materials. 531, 152017.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)
2019

Direct observation of mono-vacancy and self-interstitial recovery in tungsten

Heikinheimo, J., Mizohata, K., Räisänen, J., Ahlgren, T., Jalkanen, P., Lahtinen, A., Catarino, N., Alves, E. & Tuomisto, F., 1 Feb 2019, In : APL Materials. 7, 2, p. 1-7 021103.

Research output: Contribution to journalArticleScientificpeer-review

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

Spectroscopy of defects in neutron irradiated ammono-thermal GaN by combining photoionization, photoluminescence and positron annihilation techniques

Pavlov, J., Ceponis, T., Deveikis, L., Heikkinen, T., Raisanen, J., Rumbauskas, Tamulaitis, G., Tuomisto, F. & Gaubas, E., 2019, In : LITHUANIAN JOURNAL OF PHYSICS. 59, 4, p. 211-223 13 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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20 Downloads (Pure)

Unusual properties of the RY3 center in GaN

Reshchikov, M. A., Sayeed, R. M., Ozgur, U., Demchenko, D. O., McNamara, J. D., Prozheeva, Tuomisto, F., Helava, H., Usikov, A. & Makarov, Y., 18 Jul 2019, In : Physical Review B. 100, 4, p. 1-19 19 p., 045204.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
File
3 Citations (Scopus)
158 Downloads (Pure)
2018

Effects of alloy composition and Si-doping on vacancy defect formation in (InxGa1- x)2O3 thin films

Prozheeva, V., Hölldobler, R., Von Wenckstern, H., Grundmann, M. & Tuomisto, F., 28 Mar 2018, In : Journal of Applied Physics. 123, 12, p. 1-6 125705.

Research output: Contribution to journalArticleScientificpeer-review

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

Hydrogen-induced strain localisation in oxygen-free copper in the initial stage of plastic deformation

Yagodzinskyy, Y., Malitckii, E., Tuomisto, F. & Hänninen, H., 2018, In : Philosophical Magazine. 98, 9, p. 727-740 14 p.

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Influence of Fermi level position on vacancy-assisted diffusion of aluminum in zinc oxide

Sky, T. N., Johansen, K. M., Venkatachalapathy, V., Svensson, B. G., Vines, L. & Tuomisto, F., 28 Dec 2018, In : Physical Review B. 98, 24, p. 1-24 245204.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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2 Citations (Scopus)
136 Downloads (Pure)
2017

Amphoteric Be in GaN: Experimental Evidence for Switching between Substitutional and Interstitial Lattice Sites

Tuomisto, F., Prozheeva, V., Makkonen, I., Myers, T. H., Bockowski, M. & Teisseyre, H., 9 Nov 2017, In : Physical Review Letters. 119, 19, p. 1-5 196404.

Research output: Contribution to journalArticleScientificpeer-review

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

Charge compensation mechanisms in U1-xGdxO2 and Th1-xGdxO2-x/2 studied by X-ray Absorption Spectroscopy

Bes, R., Pakarinen, J., Baena, A., Conradson, S., Verwerft, M. & Tuomisto, F., 2017, In : Journal of Nuclear Materials. 489, p. 9–21

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Defects in Single Crystalline Ammonothermal Gallium Nitride

Suihkonen, S., Pimputkar, S., Sintonen, S. & Tuomisto, F., Jun 2017, In : Advanced Electronic Materials. 3, 6, p. 1-18 1600496.

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)
2 Citations (Scopus)

Effects of grain size and deformation temperature on hydrogen-enhanced vacancy formation in Ni alloys

Lawrence, S. K., Yagodzinskyy, Y., Hänninen, H., Korhonen, E., Tuomisto, F., Harris, Z. D. & Somerday, B. P., 15 Apr 2017, In : Acta Materialia. 128, p. 218-226 9 p.

Research output: Contribution to journalArticleScientificpeer-review

30 Citations (Scopus)

Evaluation of the concentration of point defects in GaN

Reshchikov, M. A., Usikov, A., Helava, H., Makarov, Y. N., Prozheeva, V., Makkonen, I., Tuomisto, F., Leach, J. H. & Udwary, K., 1 Dec 2017, In : Scientific Reports. 7, 1, p. 1-11 9297.

Research output: Contribution to journalArticleScientificpeer-review

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

Formation of Zn- and O- vacancy clusters in ZnO through deuterium annealing

Johansen, K. M., Tuomisto, F., Makkonen, I. & Vines, L., Oct 2017, In : MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING. 69, p. 23-27 5 p.

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Hole density and acceptor-type defects in MBE-grown GaSb1-x Bix

Segercrantz, N., Slotte, J., Makkonen, I., Tuomisto, F., Sandall, I. C., Ashwin, M. J. & Veal, T. D., 3 Jul 2017, In : Journal of Physics D: Applied Physics. 50, 29, p. 1-6 6 p., 295102.

Research output: Contribution to journalArticleScientificpeer-review

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

Instability of the Sb vacancy in GaSb

Segercrantz, N., Slotte, J., Tuomisto, F., Mizohata, K. & Raisanen, J., 3 May 2017, In : Physical Review B. 95, 18, p. 1-5 5 p., 184103.

Research output: Contribution to journalArticleScientificpeer-review

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

Positron annihilation analysis of the atomic scale changes in oxidized Zircaloy-4 samples

Heikinheimo, J., Ortner, S., Makkonen, I., Kujala, J., Blackmur, M. & Tuomisto, F., 1 Nov 2017, In : Journal of Nuclear Materials. 495, p. 172-180 9 p.

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Radiation-induced alloy rearrangement in InxGa1− xN

Prozheeva, V., Makkonen, I., Cuscó, R., Artús, L., Dadgar, A., Plazaola, F. & Tuomisto, F., 27 Mar 2017, In : Applied Physics Letters. 110, 13, p. 1-4 132104.

Research output: Contribution to journalArticleScientificpeer-review

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

Subsurface damage in polishing-annealing processed ZnO substrates

Prozheeva, V., Johansen, K. M., Neuvonen, P. T., Zubiaga, A., Vines, L., Kuznetzov, A. Y. & Tuomisto, F., Oct 2017, In : MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING. 69, p. 19-22

Research output: Contribution to journalArticleScientificpeer-review

File
3 Citations (Scopus)
1 Downloads (Pure)
2016

Calculation of positron annihilation characteristics of six main defects in 6H -SiC and the possibility to distinguish them experimentally

Linez, F., Makkonen, I. & Tuomisto, F., 6 Jul 2016, In : Physical Review B. 94, 1, p. 1-11 014103.

Research output: Contribution to journalArticleScientificpeer-review

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

Electrical compensation via vacancy-donor complexes in arsenic-implanted and laser-annealed germanium

Kalliovaara, T., Slotte, J., Makkonen, I., Kujala, J., Tuomisto, F., Milazzo, R., Impellizzeri, G., Fortunato, G. & Napolitani, E., 31 Oct 2016, In : Applied Physics Letters. 109, 18, p. 1-4 182107.

Research output: Contribution to journalArticleScientificpeer-review

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

GaN films and GaN/AlGaN quantum wells grown by plasma assisted molecular beam epitaxy using a high density radical source

Cordier, Y., Damilano, B., Aing, P., Chaix, C., Linez, F., Tuomisto, F., Vennegues, P., Frayssinet, E., Lefebvre, D., Portail, M. & Nemoz, M., 1 Jan 2016, In : Journal of Crystal Growth. 433, p. 165-171 7 p.

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Identification of vacancy defect complexes in transparent semiconducting oxides ZnO, In2O3 and SnO2

Makkonen, I., Korhonen, E., Prozheeva, V. & Tuomisto, F., 8 Mar 2016, In : Journal of physics: Condensed matter. 28, 22, p. 1-7 224002.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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36 Citations (Scopus)
366 Downloads (Pure)

Modeling positronium beyond the single particle approximation

Zubiaga, A., Ervasti, M. M., Makkonen, I., Harju, A., Tuomisto, F. & Puska, M. J., 29 Feb 2016, In : Journal of Physics B: Atomic Molecular and Optical Physics. 49, 6, p. 1-13 064005.

Research output: Contribution to journalArticleScientificpeer-review

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

Monte Carlo analysis of germanium detector performance in slow positron beam experiments

Heikinheimo, J., Tuominen, R. & Tuomisto, F., 26 Jan 2016, In : Journal of Physics: Conference Series. 674, 1, p. 1-7 012023.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
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123 Downloads (Pure)

Si nanocrystals and nanocrystal interfaces studied by positron annihilation

Kujala, J., Slotte, J., Tuomisto, F., Hiller, D. & Zacharias, M., 14 Oct 2016, In : Journal of Applied Physics. 120, 14, p. 1-6 145302.

Research output: Contribution to journalArticleScientificpeer-review

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

The influence of nitrogen and antimony on the optical quality of InNAs(Sb) alloys

Latkowska, M., Baranowski, M., Linhart, W. M., Janiaka, F., Misiewicz, J., Segercrantz, N., Tuomisto, F., Zhuang, Q., Krier, A. & Kudrawiec, R., 11 Feb 2016, In : Journal of Physics D: Applied Physics. 49, 11, p. 1-7 115105.

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Understanding and control of bipolar self-doping in copper nitride

Fioretti, A. N., Schwartz, C. P., Vinson, J., Nordlund, D., Prendergast, D., Tamboli, A. C., Caskey, C. M., Tuomisto, F., Linez, F., Christensen, S. T., Toberer, E. S., Lany, S. & Zakutayev, A., 14 May 2016, In : Journal of Applied Physics. 119, 18, p. 1-10 10 p., 181508.

Research output: Contribution to journalArticleScientificpeer-review

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

Vacancy-donor complexes in highly n-type Ge doped with As, P and Sb

Kujala, J., Südkamp, T., Slotte, J., Makkonen, I., Tuomisto, F. & Bracht, H., 28 Jun 2016, In : Journal of physics: Condensed matter. 28, 33, p. 1-7 335801.

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)
2015

Advanced techniques for characterization of ion beam modified materials

Zhang, Y., Debelle, A., Boulle, A., Kluth, P. & Tuomisto, F., Feb 2015, In : CURRENT OPINION IN SOLID STATE AND MATERIALS SCIENCE. 19, 1, p. 19-28 10 p.

Research output: Contribution to journalArticleScientificpeer-review

28 Citations (Scopus)

Annealing effect on donor-acceptor interface and its impact on the performance of organic photovoltaic devices based on PSiF-DBT copolymer and C60

Marchiori, C. F. N., Yamamoto, N. A. D., Matos, C. F., Kujala, J., Macedo, A. G., Tuomisto, F., Zarbin, A. J. G., Koehler, M. & Roman, L. S., 2015, In : Applied Physics Letters. 106, 13, p. 1-5 5 p., 133301.

Research output: Contribution to journalArticleScientificpeer-review

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

Cation vacancies and electrical compensation in Sb-doped thin-film SnO2 and ZnO

Korhonen, E., Prozheeva, V., Tuomisto, F., Bierwagen, O., Speck, J. S., White, M. E., Galazka, Z., Liu, H., Izyumskaya, N., Özgür, U. & Morkoç, H., 19 Jan 2015, In : Semiconductor Science and Technology. 30, 2, p. 1-7 7 p., 024011.

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)

Electrical compensation by Ga vacancies in Ga2O3  thin films

Korhonen, E., Tuomisto, F., Gogova, D., Wagner, G., Baldini, M., Galazka, Z., Schewski, R. & Albrecht, M., 2015, In : Applied Physics Letters. 106, 24, p. 1-3 3 p., 242103.

Research output: Contribution to journalArticleScientificpeer-review

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

Increased p-type conductivity in GaNxSb1-x, experimental and theoretical aspects

Segercrantz, N., Makkonen, I., Slotte, J., Kujala, J., Veal, T. D., Ashwin, M. J. & Tuomisto, F., 28 Aug 2015, In : Journal of Applied Physics. 118, 8, p. 1-9 9 p., 085708.

Research output: Contribution to journalArticleScientificpeer-review

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

Pick-off Annihilation of Positronium in Matter Using Full Correlation Single Particle Potentials: Solid He

Zubiaga, A., Tuomisto, F. & Puska, M. J., 2015, In : Journal of Physical Chemistry B. 119, 4, p. 1747-1755 9 p.

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Role of excessive vacancies in transgranular stress corrosion cracking of pure copper

Aaltonen, P., Yagodzinskyy, Y., Saukkonen, T., Kilpeläinen, S., Tuomisto, F. & Hänninen, H., 2015, In : Corrosion Reviews. 33, 6, p. 487-500 14 p.

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)
2014

Charge transition level of GePb1 centers at interfaces of SiO2/GexSi1-x/SiO2 heterostructures investigated by positron annihilation spectroscopy

Madia, O., Segercrantz, N., Afanasjev, V., Stesmans, A., Souriau, L., Slotte, J. & Tuomisto, F., Nov 2014, In : PHYSICA STATUS SOLIDI B: BASIC SOLID STATE PHYSICS. 251, 11, p. 2211-2215 5 p.

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Compensating vacancy defects in Sn- and Mg-doped In2O3

Korhonen, E., Tuomisto, F., Bierwagen, O., Speck, J. S. & Galazka, Z., Dec 2014, In : Physical Review B. 90, 24, p. 1-7 7 p., 245307.

Research output: Contribution to journalArticleScientificpeer-review

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

Effect of growth temperature on the epitaxial growth of ZnO on GaN by ALD

Särkijärvi, S., Sintonen, S., Tuomisto, F., Bosund, M., Suihkonen, S. & Lipsanen, H., 15 Jul 2014, In : Journal of Crystal Growth. 398, p. 18-22 5 p.

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)

Full-correlation single-particle positron potentials for a positron and positronium interacting with atoms

Zubiaga, A., Tuomisto, F. & Puska, M., May 2014, In : Physical Review A. 89, 5, p. 1-9 9 p., 052707.

Research output: Contribution to journalArticleScientificpeer-review

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

Growth, characterization and study of ferromagnetism of bismuth telluride doped with manganese

Fedorchenko, I. V., Marenkin, S. F., Avdonin, A., Domukhovski, V., Dobrowolski, W., Heikinheimo, J., Korhonen, E. & Tuomisto, F., 1 Sep 2014, In : Journal of Crystal Growth. 401, p. 636-639 4 p.

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

He implantation induced defects in InN

Linez, F., Ritt, M., Rauch, C., Kilanski, L., Choi, S., Speck, J. S., Räisänen, J. & Tuomisto, F., 2014, In : Journal of Physics: Conference Series. 505, 1, p. 1-4 4 p., 012012.

Research output: Contribution to journalArticleScientificpeer-review

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

Impact of strain on the passivation efficiency of Ge dangling bond interface defects in condensation grown SiO2/Si1-xGex/SiO2/(100)Si structures with nm-thi

Madia, O., Nguyen, A. P. D., Thoan, N. H., "Afanas'ev", V., Stesmans, A., Souriau, L., Slotte, J. & Tuomisto, F., 1 Feb 2014, In : Applied Surface Science. 291, p. 11-15 5 p.

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)