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20032020

Research output per year

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Research Output

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

1 Citation (Scopus)

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
File
6 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
File

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

1 Citation (Scopus)
2019

Control of Vacancy Defects in Reactively Sputtered (Ag,Cu)(In,Ga)Se2 Solar Cells

Farshchi, R., Bailey, J., Poplavskyy, D., Hickey, B., Spaulding, D., Kuan, E. T., Khanam, A. & Tuomisto, F., 1 Jun 2019, 2019 IEEE 46th Photovoltaic Specialists Conference, PVSC 2019. IEEE, p. 3198-3200 3 p. 8980772. (Conference Record of the IEEE Photovoltaic Specialists Conference).

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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
File
6 Citations (Scopus)
120 Downloads (Pure)

Ga vacancies and electrical compensation in β-Ga 2 O 3 thin films studied with positron annihilation spectroscopy

Tuomisto, F., Karjalainen, A., Prozheeva, V., Makkonen, I., Wagner, G. & Baldini, M., 1 Jan 2019, Oxide-Based Materials and Devices X. Rogers, D. J., Teherani, F. H. & Look, D. C. (eds.). p. 1-8 1091910. (Proceedings of SPIE; vol. 10919).

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Open Access
File
134 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
File
14 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)
90 Downloads (Pure)
2018

15 years of the European Nuclear Education Network (ENEN Association)

Cizelj, L., Starflinger, J., Decobert, V., Bazargan-Sabet, B., Tuomisto, F., Coeck, M., Anzieu, P., Roberts, J., Wheldon, T. K. & Porras, P. D., 1 Jan 2018, 2018 26th International Conference on Nuclear Engineering: Volume 8: Computational Fluid Dynamics (CFD); Nuclear Education and Public Acceptance. American Society of Mechanical Engineers, Vol. 8. 6 p. ICONE26-82611

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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
File
3 Citations (Scopus)
131 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
File
2 Citations (Scopus)
131 Downloads (Pure)

Preface

Freitas, J. A., Tuomisto, F. & Pimputkar, S., 1 Nov 2018, In : Journal of Crystal Growth. 501, 1 p.

Research output: Contribution to journalEditorialScientificpeer-review

The ENEN+ Project: Attracting, Retaining and Developing New Nuclear Talents Beyond Academic Curricula

Cizelj, L., Pesznyak, C., Bazargan-Sabet, B., Abdelouas, A., Tuomisto, F., Coeck, M. & Porras, P. D., 2018, PROCEEDINGS OF THE 26TH INTERNATIONAL CONFERENCE ON NUCLEAR ENGINEERING: Volume 8: Computational Fluid Dynamics (CFD); Nuclear Education and Public Acceptance London, England, July 22–26, 2018. American Society of Mechanical Engineers, 6 p.

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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
File
12 Citations (Scopus)
49 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

4 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

13 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

27 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
File
15 Citations (Scopus)
152 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
File
6 Citations (Scopus)
155 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
File
7 Citations (Scopus)
274 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

5 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
File
5 Citations (Scopus)
303 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
2 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
File
5 Citations (Scopus)
93 Downloads (Pure)

Development of a Triple-Coincidence Positron Lifetime Spectrometer for Nuclear Materials Research

Heikinheimo, J., Bes, R. & Tuomisto, F., 2016. 4 p.

Research output: Contribution to conferencePaperScientific

Open Access

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
File
8 Citations (Scopus)
131 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
File
34 Citations (Scopus)
353 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
File
5 Citations (Scopus)
129 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
File
118 Downloads (Pure)

Preface to Special Topic: Defects in Semiconductors

Tuomisto, F. & Makkonen, I., 14 May 2016, In : Journal of Applied Physics. 119, 18, 1 p., 181301.

Research output: Contribution to journalEditorialScientific

Open Access
File
245 Downloads (Pure)

Review-Defect Identification with Positron Annihilation Spectroscopy in Narrow Band Gap Semiconductors

Slotte, J., Makkonen, I. & Tuomisto, F., 2016, In : ECS Journal of Solid State Science and Technology. 5, 4, p. P3166-P3171 6 p.

Research output: Contribution to journalLiterature reviewScientificpeer-review

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
File
1 Citation (Scopus)
199 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
File
11 Citations (Scopus)
345 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
File
8 Citations (Scopus)
309 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
File
74 Citations (Scopus)
418 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)
313 Downloads (Pure)

Mitä on hyvä yliopisto-opettajuus?

Sistonen, E., Kyösola, S., Kiesi, T., Tuomisto, F. & Riihiaho, S., 2015, Peda-forum päivät 2015 - Voimaa yhteistyöllä, Hanken ja Maanpuolustuskorkeakoulu, Helsinki, 20.-21.8.2015. Hanken ja Maanpuolustuskorkeakoulu

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

Mitä on hyvä yliopisto-opettajuus?

Sistonen, E., Riihiaho, S., Kiesi, T., Kyösola, S., Nikoskinen, K., Ojapelto, A. & Tuomisto, F., 2015, In : YLIOPISTOPEDAGOGIIKKA. 22, 1, p. 52-54

Research output: Contribution to journalReview ArticleScientificpeer-review

Mitä on hyvä yliopisto-opettajuus 360°?

Kiesi, T., Kyösola, S., Nikoskinen, K., Ojapelto, A., Riihiaho, S., Sistonen, E. & Tuomisto, F., 2015, Hyvä yliopisto-opettajuus - kysymyksiä ja vastauksia yliopistopedagogisen koulutusvuoden varrelta.Aalto-yliopiston julkaisusarja CROSSOVER 11/2015. Syrjäkari, M. & Koponen, J. (eds.). Espoo: Aalto-yliopisto, Oppimispalvelut, p. 22-75 (Aalto-yliopiston julkaisusarja CROSSOVER; vol. 2015, no. 11).

Research output: Chapter in Book/Report/Conference proceedingChapterScientificpeer-review

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)