Filip Tuomisto

Professor

Research outputs

  1. 2012
  2. Published

    Defects identification in FeTiO3 using positron annihilation technique

    Jili, T. P., Sideras-Haddad, E., Wamwangi, D., Tuomisto, F. & Kilanski, L., 2012, PROCEEDINGS OF SAIP2012: THE 57TH ANNUAL CONFERENCE OF THE SOUTH AFRICAN INSTITUTE OF PHYSICS. VanRensburg, JJ. (ed.). p. 81-84 4 p.

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

  3. Published

    Ga-vacancy activation under low energy electron irradiation in GaN-based materials

    Nykänen, H., Suihkonen, S., Kilanski, L., Sopanen, M. & Tuomisto, F., 2012, In : MRS Online Proceedings. 1432

    Research output: Contribution to journalArticleScientificpeer-review

  4. Published

    Interplay of native point defects with ZnO Schottky barriers and doping

    Brillson, L. J., Dong, Y., Tuomisto, F., Svensson, B. G., Kuznetsov, A. Y., Doutt, D., Mosbacker, H. L., Cantwell, G., Zhang, J., Song, J. J., Fang, Z-Q. & Look, D. C., 2012, In : Journal of Vacuum Science and Technology. Part B.. 30, 5, p. 1-11 11 p., 050801.

    Research output: Contribution to journalReview ArticleScientificpeer-review

  5. Published

    Low energy electron beam induced vacancy activation in GaN

    Nykänen, H., Suihkonen, S., Kilanski, L., Sopanen, M. & Tuomisto, F., 2012, In : Applied Physics Letters. 100, 12, p. 1-3 3 p., 122105.

    Research output: Contribution to journalArticleScientificpeer-review

  6. Published

    Magnetically active vacancy related defects in irradiated GaN layers

    Kilanski, L., Tuomisto, F., Szymczak, R. & Kruszka, R., 2012, In : Applied Physics Letters. 101, 7, p. 1-3 3 p., 072102.

    Research output: Contribution to journalArticleScientificpeer-review

  7. Published

    Self-compensation in highly n-type InN

    Rauch, C., Tuomisto, F., King, P. D. C., Veal, T. D., Lu, H. & Schaff, W. J., 2012, In : Applied Physics Letters. 101, 1, p. 1-4 4 p., 011903.

    Research output: Contribution to journalArticleScientificpeer-review

  8. Published

    Study of Defects Generated by Standard- and Plasma- Implantation of Nitrogen Atoms in 4H-SiC Epitaxial Layers

    Ottaviani, L., Kazan, M., Biondo, S., Tuomisto, F., Milesi, F., Duchaine, J., Torregrosa, F. & Palais, O., 2012, In : Materials Science Forum. 725, p. 41-44 4 p.

    Research output: Contribution to journalArticleScientificpeer-review

  9. Published

    Tailoring the Chain Packing in Ultrathin Polyelectrolyte Films Formed by Sequential Adsorption: Nanoscale Probing by Positron Annihilation Spectroscopy

    Quinn, J. F., Pas, S. J., Quinn, A., Yap, H. P., Suzuki, R., Tuomisto, F., Shekibi, B. S., Mardel, J. I., Hill, A. J. & Caruso, F., 2012, In : Journal of the American Chemical Society. 134, 48, p. 19808-19819 12 p.

    Research output: Contribution to journalArticleScientificpeer-review

  10. 2011
  11. Published

    Defect evolution and impurity migration in Na implanted ZnO

    Neuvonen, P. T., Vines, L., Venkatachalapathy, V., Zubiaga, A., Tuomisto, F., Hallén, A., Svensson, B. G. & Kuznetsov, A. Y., Nov 2011, In : Physical Review B. 84, 20, p. 1-7 7 p., 205202.

    Research output: Contribution to journalArticleScientificpeer-review

  12. Published

    Time dependence of charge transfer processes in diamond studied with positrons

    Mäki, J-M., Tuomisto, F., Varpula, M., Fisher, D., Khan, R. U. A. & Martineau, P. M., Nov 2011, In : Physical Review Letters. 107, 21, p. 1-5 5 p., 217403.

    Research output: Contribution to journalArticleScientificpeer-review

  13. Published

    H passivation of Li on Zn-site in ZnO: Positron annihilation spectroscopy and secondary ion mass spectrometry

    Johansen, K. M., Zubiaga, A., Tuomisto, F., Monakhov, E. V., Kuznetsov, A. Y. & Svensson, B. G., Sep 2011, In : Physical Review B. 84, 11, p. 1-4 4 p., 115203.

    Research output: Contribution to journalArticleScientificpeer-review

  14. Published

    Identifying vacancy complexes in compound semiconductors with positron annihilation spectroscopy: a case study of InN

    Rauch, C., Makkonen, I. & Tuomisto, F., Sep 2011, In : Physical Review B. 84, 12, p. 1-9 9 p., 125201.

    Research output: Contribution to journalArticleScientificpeer-review

  15. Published

    Self-compensation in semiconductors: the Zn-vacancy in Ga-doped ZnO

    Look, D. C., Leedy, K. D., Vines, L., Svensson, B. G., Zubiaga, A., Tuomisto, F., Doutt, D. & Brillson, L. J., Sep 2011, In : Physical Review B. 84, 11, p. 1-6 6 p., 115202.

    Research output: Contribution to journalArticleScientificpeer-review

  16. Published

    Identification of the VAl-ON defect complex in AlN single crystals

    Mäki, J-M., Makkonen, I., Tuomisto, F., Karjalainen, A., Suihkonen, S., Räisänen, J., Chemekova, T. Y. & Makarov, Y. N., 29 Aug 2011, In : Physical Review B. 84, 8, p. 1_5 4 p., 081204.

    Research output: Contribution to journalArticleScientificpeer-review

  17. Published

    Tracking defect-induced ferromagnetism in GaN:Gd

    Roever, M., Malindretos, J., Bedoya-Pinto, A., Rizzi, A., Rauch, C. & Tuomisto, F., Aug 2011, In : Physical Review B. 84, 8, p. 1-4 4 p., 081201.

    Research output: Contribution to journalArticleScientificpeer-review

  18. Published

    Towards Experimental Identification of Vacancy Complexes in InN

    Rauch, C., Makkonen, I. & Tuomisto, F., Jul 2011, In : PHYSICA STATUS SOLIDI B: BASIC SOLID STATE PHYSICS. 208, 7, p. 1548-1550 3 p.

    Research output: Contribution to journalArticleScientificpeer-review

  19. Published

    Direct observations of the vacancy and its annealing in germanium

    Slotte, J., Kilpeläinen, S., Tuomisto, F., Räisänen, J. & Nylansted Larsen, A., Jun 2011, In : Physical Review B. 83, 23, p. 1-5 5 p., 235212.

    Research output: Contribution to journalArticleScientificpeer-review

  20. Published

    Identification of substitutional Li in n-type ZnO and its role as an acceptor

    Johansen, K. M., Zubiaga, A., Makkonen, I., Tuomisto, F., Neuvonen, P. T., Knutsen, K. E., Monakhov, E. V., Kuznetsov, A. Y. & Svensson, B. G., Jun 2011, In : Physical Review B. 83, 24, p. 1-7 7 p., 245208.

    Research output: Contribution to journalArticleScientificpeer-review

  21. Published

    Evolution of E-centers during the annealing of Sb-doped Si0.8Ge0.2

    Kilpeläinen, S., Tuomisto, F., Slotte, J., Lundsgaard Hansen, J. & Nylandsted Larsen, A., Mar 2011, In : Physical Review B. 83, 9, p. 1-5 5 p., 094115.

    Research output: Contribution to journalArticleScientificpeer-review

  22. Published

    Positron and luminescence lifetimes in annealed synthetic quartz

    Chithambo, M. L., Sane, P. & Tuomisto, F., Mar 2011, In : RADIATION MEASUREMENTS. 46, 3, p. 310-318 9 p.

    Research output: Contribution to journalArticleScientificpeer-review

  23. Published

    Void volume variations in contact lens polymers

    Sane, P., Tuomisto, F. & Holopainen, J. M., Feb 2011, In : CONTACT LENS AND ANTERIOR EYE. 34, 1, p. 2-6 5 p.

    Research output: Contribution to journalArticleScientificpeer-review

  24. Published

    Role of Excessive Vacancy Generated in p-n Type Duplex Cu2O Film under Anodic Bias in TGSCC of Pure Copper

    Aaltonen, P., Yagodzinskyy, Y., Kilpeläinen, S., Tuomisto, F. & Hänninen, H., 2011, The European Corrosion Congress, EUROCORR 2011, September 4-8, 2011, Stockholm, Sweden. p. 12

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

  25. Published

    Vacancy defects in III-nitrides: what does positron annihilation spectroscopy reveal?

    Tuomisto, F., 2011, In : Journal of Physics: Conference Series. 265, 1, p. 1-12 12 p., 012003.

    Research output: Contribution to journalArticleScientificpeer-review

  26. 2010
  27. Published

    Defect redistribution in post-irradiation rapid-thermal-annealed InN

    Reurings, F., Rauch, C., Tuomisto, F., Jones, R. E., Yu, K. M., Walukiewicz, W. & Schaff, W. J., Oct 2010, In : Physical Review B. 82, 15, p. 1-4 4 p., 153202.

    Research output: Contribution to journalArticleScientificpeer-review

  28. Published

    Vacancy defects in bulk ammonothermal GaN crystals

    Tuomisto, F., Mäki, J-M. & Zajac, M., 1 Sep 2010, In : Journal of Crystal Growth. 312, 18, p. 2620-2623 4 p.

    Research output: Contribution to journalArticleScientificpeer-review

  29. Published

    Positrons as interface-sensitive probes of polar semiconductor heterostructures

    Makkonen, I., Snicker, A., Puska, M. J., Mäki, J-M. & Tuomisto, F., Jul 2010, In : Physical Review B. 82, 4, p. 1-4 4 p., 041307.

    Research output: Contribution to journalArticleScientificpeer-review

  30. Published

    Diffusion of cobalt in ion-implanted ZnO

    Koskelo, O., Räisänen, J., Eversheim, D., Tuomisto, F., Grasza, K. & Mycielski, A., 3 May 2010, In : Thin Solid Films. 518, 14, p. 3894-3897 4 p.

    Research output: Contribution to journalArticleScientificpeer-review

  31. Published

    In-vacancies in Si-doped InN

    Rauch, C., Reurings, F., Tuomisto, F., Veal, T., McConville, C. F., Lu, H., Schaff, W. J., Gallinat, C. S., Koblmüller, G., Speck, J. S., Egger, W., Löwe, B., Ravelli, L. & Sojak, S., May 2010, In : PHYSICA STATUS SOLIDI A: APPLICATIONS AND MATERIALS SCIENCE. 207, 5, p. 1083-1086 4 p.

    Research output: Contribution to journalArticleScientificpeer-review

  32. Published

    Irradiation-induced defects in InN and GaN studied with positron annihilation

    Reurings, F., Tuomisto, F., Egger, W., Löwe, B., Ravelli, L., Sojak, S., Liliental-Weber, Z., Jones, R. E., Yu, K. M., Walukiewicz, W. & Schaff, W. J., May 2010, In : PHYSICA STATUS SOLIDI A: APPLICATIONS AND MATERIALS SCIENCE. 207, 5, p. 1087-1090 4 p.

    Research output: Contribution to journalArticleScientificpeer-review

  33. Published
  34. Published

    Temperature-induced Structural Transition in-situ in Porcine Lens - Changes Observed in Void Size Distribution

    Sane, P., Tuomisto, F., Wiedmer, S. K., Nyman, T., Vattulainen, I. & Holopainen, J. M., May 2010, In : BIOCHIMICA ET BIOPHYSICA ACTA: BIOMEMBRANES. 1798, 5, p. 958-965 8 p.

    Research output: Contribution to journalArticleScientificpeer-review

  35. Published

    Stabilization of Ge-rich defect complexes originating from E centers in SiGe:P

    Kilpeläinen, S., Kuitunen, K., Tuomisto, F., Slotte, J., Radamson, H. H. & Kuznetsov, A. Y., Apr 2010, In : Physical Review B. 81, 13, p. 1-4 4 p., 132103.

    Research output: Contribution to journalArticleScientificpeer-review

  36. Published

    Divacancies at room temperature in germanium

    Slotte, J., Kuitunen, K., Kilpeläinen, S. H., Tuomisto, F. & Capan, I., 26 Feb 2010, In : Thin Solid Films. 518, 9, p. 2314-2316 3 p.

    Research output: Contribution to journalArticleScientificpeer-review

  37. Published

    Effect of Hydrogen on Plastic Strain Localization in Single Crystals of Austenitic Stainless Steel

    Yagodzinskyy, Y., Saukkonen, T., Kilpeläinen, S., Tuomisto, F. & Hänninen, H., Feb 2010, In : Scripta Materialia. 62, 3, p. 155-158 4 p.

    Research output: Contribution to journalArticleScientificpeer-review

  38. Published

    Vacancy defect and defect cluster energetics in ion-implanted ZnO

    Dong, Y., Tuomisto, F., Svensson, B. G., Kuznetsov, A. Y. & Brillson, L. J., Feb 2010, In : Physical Review B. 81, 8, p. 1-4 4 p., 081201.

    Research output: Contribution to journalArticleScientificpeer-review

  39. Published

    Revealing the Microstructural Changes in Tissues In-Situ with Positron Annihilation Spectroscopy

    Sane, P., Tuomisto, F., Vattulainen, I. & Holopainen, J., Jan 2010, In : Biophysical Journal. 98, 3, p. 663a-663a 1 p.

    Research output: Contribution to journalArticleScientificpeer-review

  40. Published

    Acceptor Type Vacancy Complexes In As-Grown ZnO

    Zubiaga, A., Tuomisto, F. & Zuniga-Perez, J., 2010, 2010 WIDE BANDGAP CUBIC SEMICONDUCTORS: FROM GROWTH TO DEVICES. Ferro, G. & Siffert, P. (eds.). American Institute of Physics, p. 217-220 4 p. (AIP Conference Proceedings ; vol. 1292).

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

  41. Published

    Changing vacancy balance in ZnO by tuning synthesis between zinc/oxygen lean conditions

    Venkatachalapathy, V., Galeckas, A., Zubiaga, A., Tuomisto, F. & Kuznetsov, A. Y., 2010, In : Journal of Applied Physics. 108, 4, p. 1-3 3 p., 046101.

    Research output: Contribution to journalArticleScientificpeer-review

  42. Published

    Characterization of vacancy defects in ZnO by positron annihilation spectroscopy

    Tuomisto, F., 2010, Zinc Oxide the Future Material for Electronics: A Comprehensive Review on ZnO Physics and Defects. Selim, F. (ed.). Kerala, p. Ch. 4

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

  43. Published

    Comparison of T91 and P91 steels forseen for high temperature reactor using positron annihilation techniques

    Veternikova, J., Slugen, V., Degmova, J., Hinca, R., Sojak, S., Kilpeläinen, S., Tuomisto, F., Räisänen, J. & Krsjak, V., 2010, European Nuclear Conference 2010 Transactions. European Nuclear Society, p. 133-137

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

  44. Published

    Defect characterization in semiconductors with positron annihilation spectroscopy

    Tuomisto, F., 2010, Springer Handbook of Crystal Growth, Defects and Characterization. Eds.G.Dhanaraj, K. B. (ed.). New York, p. Ch. 46

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

  45. Published

    Defect studies with positrons: what could we learn on III-nitride heterostructures?

    Tuomisto, F., Mäki, J-M., Svensk, O., Törmä, P., Ali, M., Suihkonen, S. & Sopanen, M., 2010, In : Journal of Physics: Conference Series. 225, 1, p. 1-6 6 p., 012057.

    Research output: Contribution to journalArticleScientificpeer-review

  46. Published

    Influence of Ga/N ratio on morphology, Ga vacancies and electrical transport in (0001) GaN grown by plasma-assisted molecular beam epitaxy at high temperature

    Koblmüller, G., Reurings, F., Tuomisto, F. & Speck, J. S., 2010, In : Applied Physics Letters. 97, 19, p. 1-3 3 p., 191915.

    Research output: Contribution to journalArticleScientificpeer-review

  47. Published

    In vacancies in InN grown by plasma-assisted molecular beam epitaxy

    Reurings, F., Tuomisto, F., Gallinat, C. S., Koblmüller, G. & Speck, J. S., 2010, In : Applied Physics Letters. 97, 25, p. 1-3 3 p., 251907.

    Research output: Contribution to journalArticleScientificpeer-review

  48. Published

    Point defects and impurities in bulk GaN studied by positron annihilation spectroscopy

    Tuomisto, F., 2010, Technology of Gallium Nitride Crystal Growth, vol 133, part 5. Eds.D.Ehrentraut, E. M. (ed.). Berlin, p. 295-316

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

  49. 2009
  50. Published

    Vacancy Engineering by He Induced Nanovoids in Crystalline Si

    Kilpeläinen, S., Kuitunen, K., Tuomisto, F., Slotte, J., Bruno, E., Mirabella, S. & Priolo, F., 5 Dec 2009, In : Semiconductor Science and Technology. 24, 1, p. 1-4 4 p., 015005.

    Research output: Contribution to journalArticleScientificpeer-review

  51. Published

    Defect characterization of heavily As and P doped Si epilayers

    Kilpeläinen, S., Kuitunen, K., Slotte, J., Tuomisto, F., Borot, G., Rubaldo, L., Clément, L., Pantel, R. & Dutartre, D., Nov 2009, In : PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS. 6, 11, p. 2537-2539 3 p.

    Research output: Contribution to journalArticleScientificpeer-review

  52. Published

    Effect of growth conditions on vacancy defects in MOVPE grown AlN thin layers

    Mäki, J-M., Tuomisto, F., Bastek, B., Bertram, F., Christen, J., Dadgar, A. & Krost, A., Nov 2009, In : PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS. 6, 11, p. 2575-2577 3 p.

    Research output: Contribution to journalArticleScientificpeer-review

  53. Published

    Properties of optically active vacancy clusters in type IIa diamond

    Mäki, J-M., Tuomisto, F., Kelly, C. J., Fisher, D. & Martineau, P. M., 19 Aug 2009, In : Journal of physics: Condensed matter. 21, 36, p. 1-10 10 p., 364216.

    Research output: Contribution to journalArticleScientificpeer-review

  54. Published

    Vacancy defects probed with positron annihilation spectroscopy in In-polar InN grown by plasma-assisted molecular beam epitaxy: Effects of growth conditions

    Reurings, F., Tuomisto, F., Koblmüller, G., Gallinat, C. S. & Speck, J. S., Jun 2009, In : PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS. 6, Supplement 2, p. S401-S404 4 p.

    Research output: Contribution to journalArticleScientificpeer-review

ID: 49531