Communications at scientific meetings

1. Laser treatment of plasma hydrogenated silicon wafers
C. Ghica, L. C. Nistor, M. Stefan, D. Ghica, B. Mironov, M. Dinescu, S. Vizireanu and G. Dinescu
E-MRS 2009 Spring Meeting, Symposium I: “Silicon and Germanium issues for future CMOS devices”, June 8 – 12, 2009, Strasbourg, France (poster)

2. EPR of transition ions in (nano)crystalline materials
S. V. Nistor
Joint IFIN-HH-ICTP-IAEA Workshop on “Trends in Nanoscience: theory, experiment, technology”, August 23-30, 2009, Sibiu, Romania (invited lecture)

3. Localization of Mn2+ impurity ions in cubic ZnS quantum dots
S. V. Nistor, M. Stefan, L. C. Nistor and C. D. Mateescu
Joint IFIN-HH-ICTP-IAEA Workshop on “Trends in Nanoscience: theory, experiment, technology”, August 23-30, 2009, Sibiu, Romania (oral)

4. Laser treatment of plasma hydrogenated silicon wafers
C. Ghica, L. C. Nistor, D. Ghica, M. Stefan, B. Mironov, M.Dinescu, S. Vizireanu and G. Dinescu
Joint IFIN- HH-ICTP-IAEA Workshop on “Trends in Nanoscience: theory, experiment, technology”, August 23-30, 2009, Sibiu, Romania (poster)

5. Study of the ground multiplet of Kramer’s rare earth ions in PbWO4 scintillator by multifrequency EPR spectroscopy
F. F. Popescu, V. Bercu, J. N. Barascu, M. Martinelli, C. A. Massa, L. A. Pardi, M. Stefan, S. V. Nistor, M. Nikl and P. Bohacek 5th International Symposium on Laser, Scintillator and Non Linear Optical Materials (ISLNOM-5), September 3 – 5, 2009, Pisa, Italy (poster)

6. Local structure at Mn2+ ions in small cubic ZnS nanocrystals self-assembled into a mesoporous structure.

S. V. Nistor, D. Ghica, L. C. Nistor, M. Stefan and C. D. Mateescu
3rd International Conference on nanostructures SELf-assembly, NanaoSEA 2010, 28 June - 2 July 2010, Cassis, France (oral)

7. Lattice defect assisted incorporation of Mn2+ ions in cubic II-VI semiconductor quantum dots.
S. V. Nistor, M. Stefan, L. C. Nistor, D. Ghica, C. D. Mateescu and J. N. Barascu
11th Europhysical Conference on defects in Insulating Materials, EURODIM 2010, 12-16 July 2010, Pecs, Hungary (oral)

8. Investigating structural transformations in annealed cubic ZnS nanocrystals by Electron Paramagnetic Resonance.
D. Ghica, S. V. Nistor, L. C. Nistor, M. Stefan, C. D. Mateescu
8th International Conference on Nanosciences & Nanotechnologies, NN11, 12 - 15 July 2011, Thessaloniki, Greece (oral)

9. Spying with Mn2+ ions the structure changes during the thermal decomposition of Zn5(CO3)2(OH)6 and Zn(OH)2 into nanostructured ZnO.
S. V. Nistor, M. Stefan, L. C. Nistor and D. Ghica
The 45th Annual International Meeting of the ESR group of the Royal Society of Chemistry, Manchester, 25-29 March 2012, United Kingdom. (oral presentation)

10. Multifrequency EPR of Mn2+ in II-VI semiconductor nanocrystals.
M. Stefan and S. V. Nistor
The 45th Annual International Meeting of the ESR group of the Royal Society of Chemistry, 25-29 March 2012, Manchester, United Kingdom. (oral presentation)

11. Paramagnetic radiation defects in silicon detectors for collision particle experiments.

S. V. Nistor, R. Radu, M. Stefan, L. C. Nistor, D. Ghica and I. Pintilie
The International Conference on Defects in Insulating Materials (ICDIM 2012),
24-29 June 2012, Santa Fe (NM), U.S.A (poster)

12. Impurities and defects in wide band-gap ZnS(O) nanocrystals.
S. V. Nistor, L. C. Nistor, M. Stefan, D. Ghica and I. Vlaicu
The International Conference on Defects in Insulating Materials (ICDIM 2012),
24-29 June 2012, Santa Fe (NM), U.S.A. (oral plenary)

13. Core and surface localization of the activating Mn2+ ions in luminescent ZnS quantum dots.
S. V. Nistor, M. Stefan, D. Ghica and L. C. Nistor
8th International Conference on Luminiscent detectors and Radiation Transformers of Ionizing Radiation, LUMDETR 2012, 10-14 Sept. 2012 Halle(Salle), Germany, (oral presentation)

14. Electron paramagnetic resonance of the magnetic defects in nanostructured ZnO:Mn thin films.
D. Ghica, C. Ghica, G. E. Stan, M. Stefan
7th International Conference on Advanced Materials - ROCAM 2012, Brasov, Romania, 28-31 August 2012 (oral: Section 5)

15. EPR probing with Mn2+ ions of the crystallization and growth of nanostructured ZnO
M. Stefan, S.V. Nistor and D. Ghica
46th Annual International Meeting of the ESR Spectroscopy Group of the Royal Society of Chemistry, 7 – 11 April 2013, Warwick, United Kingdom (oral presentation)

16. Atomic scale magnetic defects in Mn-doped ZnO films
D. Ghica, M. Stefan, C. Ghica, G. E. Stan
E-MRS 2013 Spring Meeting, 27 - 31 May 2013, Strasbourg, France (oral: Symposium O)

17. Electron paramagnetic Resonance spectroscopy in the thermal analysis of nanocrystalline Zn-based compounds for nanoelectronics.
S. V. Nistor
The 2nd Central and Eastern European Conference on Thermal Analysis and Calorimetry (CEEC-TAC2), Vilnius, Lithuania, 27-30 August, 2013 (invited lecture)

18. Characterization of cubic ZnS quantum dots with various Mn2+ impurity ions doping levels by multifrequency electron paramagnetic resonance
S. V. Nistor, M. Stefan, D. Ghica and L. C. Nistor
The European Congress and Exhibition on Advanced Materials and Processes - EUROMAT 2013, Sevilla, Spain, 8-13 Sept. 2013 (oral presentation: Symposium A4.III)

19. Structural changes and crystallization of nanostructured ZnO during thermal decomposition of Zn-based precursors
L. C. Nistor, S. V. Nistor, D. Ghica, M. Stefan and I. Vlaicu
The European Congress and Exhibition on Advanced Materials and Processes - EUROMAT 2013, Sevilla, Spain, 8-13 Sept. 2013 (poster: Symposium C1.II)

20. Electron Spin Resonance (ESR) investigation of paramagnetic point defects in 17O doped Si-FZ irradiated with 27MeVelectrons
Sergiu V. Nistor, Daniela Ghica, Alexandra C. Joiţa, Roxana Radu, Ioana Pintilie
The 24th RD50 – Radiation Hard Semiconductor Devices for Very High Luminosity Colliders, workshop, moderatorsi M. Moll CERN ) and I. Pintilie (National Institute of Materials Physics), 11-13 June 2014, Bucharest, Romania (oral)

21. Radiation defects at high radiation doses in silicon detector materials
L. C. Nistor, S. V. Nistor, D. Ghica, A. C. Joiţa, I. Pintilie
Europhysical Conference on Defects in Insulating Materials (Eurodim 2014), 13-19 July 2014 Canterbury, UK (poster)

22. Unusual thermal induced structure and composition changes in the nanosized e-Zn(OH)2 shell of cZnS quantum dots
D. Ghica, L. C. Nistor, M. Stefan, S. V. Nistor
Europhysical Conference on Defects in Insulating Materials (Eurodim 2014), 13-19 July 2014 Canterbury, UK (poster)

23. EPR probing with Mn2+ ions of ZnO nanostructures
M. Stefan, D. Ghica, S.V. Nistor, C. Nistor
Europhysical Conference on Defects in Insulating Materials (Eurodim 2014), 13-19 July 2014 Canterbury, UK (poster)

24. Lattice defects influence on the Mn2+ incorporation and magnetic interactions in ZnS quantum dots
S. V. Nistor, M. Stefan, L. C. Nistor, D. Ghica, I. Vlaicu
Europhysical Conference on Defects in Insulating Materials (Eurodim 2014), 13-19 July 2014 Canterbury, UK (oral)

25. Localization and dynamics of magnetic impurities in nanostructured ZnO films
D. Ghica, M. Stefan, C. Ghica, G.E. Stan
ELECTROCERAMICS XIV, 16 – 20 June 2014, Bucharest, Romania (poster)

26. Electron Paramagnetic Resonance of Doped Semiconductor Nanostructures
M. Stefan
CERIC-ERIC New Users Symposium, 24-25 June 2015, Krakow, Poland (invited lecture)

27. EPR applications in materials science
M. Stefan, S. V. Nistor and D. Ghica
CERIC-ERIC New Users Symposium, 24-25 June 2015, Krakow, Poland (poster)

28. Probing the Annealing Induced Transformations in Semiconductor Nanostructures by EPR
M. Stefan, D. Ghica and S. V. Nistor
The 8th International Conference on Advanced Materials ROCAM-2015, 7-10 July 2015, Bucharest, Romania (oral presentation)

29. Mapping the Paramagnetic Impurities Distribution in Nanostructured Films by EPR
D. Ghica, M. Stefan, C. Ghica and G. E. Stan
The 8th International Conference on Advanced Materials ROCAM-2015, 7-10 July 2015, Bucharest, Romania (oral presentation)

30. Size, structure and local strain in nanostructured ZnO probed by electron paramagnetic resonance
M. Stefan, S. V. Nistor and D. Ghica
E-MRS Fall Meeting 2015, Symposium V, September 15– 18, 2015, Warsaw, Poland (invited presentation)

31. Unusual thermal decomposition of the Zn(OH)2 surface phase of cubic ZnS quantum dots with core-shell structure
S. V. Nistor, M. Stefan, L. C. Nistor and D. Ghica
E-MRS Fall Meeting 2015, Symposium V, September 15– 18, 2015, Warsaw, Poland (oral presentation)

32. Manganese ions distribution in doped sol-gel deposited ZnO films
M. Stefan, D. Ghica, S. V. Nistor, A. V. Maraloiu and R. Plugaru
E-MRS Fall Meeting 2015, Symposium V, September 15– 18, 2015, Warsaw, Poland (poster)

33. Evaluation of the Paramagnetic Impurities Segregation at Grain Boundaries in Nanostructured ZnO Films
D. Ghica, M. Stefan and C. Ghica
European Congress and Exhibition on Advanced Materials and Processes EUROMAT 2015, September 20 – 24, 2015, Warsaw, Poland (oral presentation)

34. ESR of point defects in pure and doped 17O/13C doped Si-FZ irradiated with 3.5 MeV and 27 MeV electrons. Corelation with TSC data.
S. V. Nistor, A. C. Joiţa, R. Radu and I. Pintilie
The 28-th RD50 workshop – Radiation Hard Semiconductor Devices for Very High Luminosity Colliders, 6-8 June 2016, Torino-Italy (oral presentation)

35. A new perspective on incorporation, localization and interaction of Mn2+ ions in self-assembled cubic ZnS:Mn quantum dots and their influence on the optical and magnetic properties.
S. V. Nistor, L. C. Nistor, M. Stefan, D. Ghica and I. D. Vlaicu
The 6th International Conference on Nanostructures and Nanomaterials Self-Assembly (NanoSEA 2016), Giardini-Naxos, 3-8 July 2016 Sicily-Italy (keynote presentation)

36. The agent role of Mn2+ in redirecting the synthesis of Zn(OH)2 towards ZnO.
I.D. Vlaicu, D. Ghica, L. C. Nistor, S. V. Nistor and M. Stefan
The 6th International Conference on Nanostructures and Nanomaterials Self-Assembly (NanoSEA 2016), Giardini-Naxos, 3-8 July 2016 Sicily-Italy (oral presentation)

37. Aggregation of Mn2+ ions in a separate phase in the pores of heavily doped cZnS:Mn nanocrystals self-assembled in a mesoporous structure.
L. C. Nistor , S. V. Nistor, I. D. Vlaicu, M. Stefan and D. Ghica
The 6th International Conference on Nanostructures and Nanomaterials Self-Assembly (NanoSEA 2016), Giardini-Naxos, 3-8 July 2016 Sicily-Italy (poster)

38. Evaluation of the paramagnetic impurities distribution in nano-structured ZnO:Mn films.
D. Ghica, M. Stefan, C. Ghica, R.F. Negrea, G.E. Stan
The 6th International Conference on Nanostructures and Nanomaterials Self-Assembly (NanoSEA 2016), Giardini-Naxos, 3-8 July 2016 Sicily-Italy (poster)

39. The main role of extended lattice defects in the localization and interaction of Mn2+ ions in cubic ZnS quantum dots.
S. V. Nistor, M. Stefan, L. C. Nistor, D. Ghica and I. D. Vlaicu
The 19th International Conference on Defects in Insulating Materials ICDIM 2016, 10-15 July 2016, Lyon, France (oral presentation)

40. Collective magnetism from aggregated Mn2+ activating ions in self-assembled cZnS quantum dots at higher doping levels.
M. Stefan, S. V. Nistor, L. C. Nistor, V. Kuncser, D. Ghica and I. D. Vlaicu
The 19th International Conference on Defects in Insulating Materials ICDIM 2016, 10-15 July 2016, Lyon, France (oral presentation)

41. Structure and localization of aggregated Mn2+ ions as a separate phase in the mesoporous assembly of cZnS:Mn QDs.
L. C. Nistor, S. V. Nistor, M. Stefan and I. D. Vlaicu
The 19th International Conference on Defects in Insulating Materials ICDIM 2016, 10-15 July 2016, Lyon, France (poster)

42. Localisation and distribution of the Mn2+ dopant ions in nanostructured ZnO films.
D. Ghica, M. Stefan, S. V. Nistor, A. V. Maraloiu and R. Plugaru
The 19th International Conference on Defects in Insulating Materials ICDIM 2016, 10-15 July 2016, Lyon, France (poster)

43. Paramagnetic defects produced by high-radiation doses in silicon detector material.
A.C. Joita, S. V. Nistor and I. Pintilie
The 19th International Conference on Defects in Insulating Materials ICDIM 2016, 10-15 July 2016, Lyon, France (poster)

44. Mn2+ ions distribution in RF-sputtered nano-ZnO:Mn films
D. Ghica, M. Stefan, C. Ghica, G. E. Stan
NANOCON 2016 - 8th International Conference on Nanomaterials - Research & Application, 19-21 October 2016, Brno, Cehia (oral)

45. TEM and EPR investigations of the localisation and distribution of Mn2+ dopant ions in nanostructured ZnO films
V.A. Maraloiu, D. Ghica, M. Stefan, S.V. Nistor, R. Plugaru
NANOCON 2016 - 8th International Conference on Nanomaterials - Research & Application, 19-21 October 2016, Brno, Cehia (poster)

46. Manganese ions effect in redirecting the synthesis of micro-Zn(OH)2 towards nano-ZnO
I. D. Vlaicu, D. Ghica, M. Stefan, L. C. Nistor, S. V. Nistor
NANOCON 2016 - 8th International Conference on Nanomaterials - Research & Application, 19-21 October 2016, Brno, Cehia (poster)