The numerous staff exchanged that took place in 2017 between FZU and UCBL-ILM were mainly focused on the following aspects:
The members of FZU team were trained in the techniques of crystal growth from the melt in UCBL-ILM laboratories and learned about the essential parameters of the growth process which have critical importance to achieve excellent quality of single crystals grown. During his 11 days visit in France, in May, 2017, Tomas Hubacek received training using the measurements of ps scintillation decay and cathodoluminescence at GaN-GaInN nanostructures (multiple quantum wells) prepared in the Prague lab and performed demonstrations of crystal growth from the melt. His colleague from Prague, Alice Hospodkova, during her visit in University Lyon 1, in May 2017, learned about experimental techniques for ps scintillation decay and cathodoluminescence measurements, characterization of GaN-GaInN nanostructures (multiple quantum wells) as well as the relation between measured characteristics and preparation technology.
The members of UCBL-ILM team were further introduced to EPR spectroscopy and its application to both the bulk and nanocrystal materials. More specifically, Benoit Mahler in his visit to FZU in the beginning of June, received training in the preparation of nanocrystals from solution, influence of preparation parameters on luminescence characteristics, comparison of nanopowder, bulk single crystal and bulk ceramic materials of the same composition as well as engaged in discussions with his partners in Prague of the origin of the observed differences. Furthermore, Gaetan Laurens received training in photoluminescence and EPR experiments while Estelle Homeyer received training in preparation of tailored diamond films by CVD technology.
- Education in crystal growth from the melt, their quality inspection and characterization techniques
- Training in crystal growth and micro pulling down techniques and their characterization including comparison with ceramics and nanopowdersof the same composition
- Knowledge exchange in the art of the crystal growth from melt
The members of FZU team were trained in the techniques of crystal growth from the melt in UCBL-ILM laboratories and learned about the essential parameters of the growth process which have critical importance to achieve excellent quality of single crystals grown. During his 11 days visit in France, in May, 2017, Tomas Hubacek received training using the measurements of ps scintillation decay and cathodoluminescence at GaN-GaInN nanostructures (multiple quantum wells) prepared in the Prague lab and performed demonstrations of crystal growth from the melt. His colleague from Prague, Alice Hospodkova, during her visit in University Lyon 1, in May 2017, learned about experimental techniques for ps scintillation decay and cathodoluminescence measurements, characterization of GaN-GaInN nanostructures (multiple quantum wells) as well as the relation between measured characteristics and preparation technology.
The members of UCBL-ILM team were further introduced to EPR spectroscopy and its application to both the bulk and nanocrystal materials. More specifically, Benoit Mahler in his visit to FZU in the beginning of June, received training in the preparation of nanocrystals from solution, influence of preparation parameters on luminescence characteristics, comparison of nanopowder, bulk single crystal and bulk ceramic materials of the same composition as well as engaged in discussions with his partners in Prague of the origin of the observed differences. Furthermore, Gaetan Laurens received training in photoluminescence and EPR experiments while Estelle Homeyer received training in preparation of tailored diamond films by CVD technology.
Secondees V. Jarý and T. Hubáček from FZU at picosecond X-ray set up in UCBL-ILM laboratory
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Packed luminescence laboratory at UCBL-ILM in November 2017 after four month break and general building repair
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Due to the continuous collaboration between these two partners, the following joint research papers have been published in international peer-reviewed journals:
- A. Hospodková, J. Oswald, M. Zíková, J. Pangrác, E. Hulicius, K. Blažek, G.Ledoux, C. Dujardin, M. Nikl, On the correlations between the excitonic luminescence efficiency and the QW numbers in multiple InGaN/GaN QW structure. J. Appl. Physics 121, 214505 (2017); DOI: 10.1063/1.4984908
- A. Hospodková, J. Pangrác, K. Kuldová, M. Nikl, O. Pacherová, J. Oswald, T. Hubáček, M. Zíková, P. Brůža, D. Pánek, K. Blažek, G. Ledoux, C. Dujardin, M. Heuken, E. Hulicius, " Devices based on InGaN/GaN multiple quantum well for scintillator and detector applications ", Proc. SPIE 10036, Fourth Conference on Sensors, MEMS, and Electro-Optic Systems, 1003617 (February 3, 2017); DOI:10.1117/12.2244786
- V. Jarý, L. Havlák, J. Bárta, M. Rejman, C. Dujardin, G. Ledoux, M. Nikl, Circadian light source based on KxNa1-xLuS2:Eu2+ phosphor. ECS J. Sol. St. Sci. Techn. 7 (1) R3182-R3188 (2018), DOI: 10.1149/2.0231801jss
