New publication: Valence control with Gd co-doping

Yet another publication for the end of the year, check out this valence control study with gadolinium co-doping from our Brazilian collaboration.

Carvalho, J.M., Lastusaari, M., Rodrigues, L.C.V., Hölsä, J., Felinto, M.C.F.C., and Brito, H.F., Valence control of Pr in ZrO2 nanocrystals by aliovalent Gd3+ co-doping, J. Lumin. 170 (2016) 627-632.
Read online: http://dx.doi.org10.1016/j.jlumin.2015.07.009

Celebrations and greetings!

The whole IMC group gathered in Blanko yesterday evening to have a wonderful dinner and celebrate the end of this year. We’ve had an amazing year and we hope we will have as much fun and success in the years to come!


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Thank you everyone for coming and for being who you are – you´re worth it!




Congratulations, Emilia!

The Vilho, Yrjo and Kalle Vaisala Foundation has announced that it has given a 12 month grant for Emilia Palo for her PhD studies on “Using luminescent nanomaterials for more efficient solar energy harvesting and use”. Congratulations for the excellent work!

Please take a look here for the list of grants (in Finnish only):

New publication: Studies about valence instability in europium and terbium phosphors

2016 started early this year, check out this new publication about valence instability in europium and terbium phosphor and how it is studied.

Rodrigues, L.C.V., Hölsä, J., Brito, H.F., Maryško, M., Matos, J.R., Paturi, P., Rodrigues, R.V., and Lastusaari, M., Magneto-optical studies of valence instability in europium and terbium phosphors, J. Lumin. 170 (2016) 701-706.
Read online:

Doctoral dissertation about upconverting nanoparticles (Fri 13.11.)

MSc Vishal Kale will defend his doctoral thesis on Friday 13th of November at 12.00 in Pharmacity Auditorium.

The thesis topic is “Blue and Uv-Emitting Upconversion Nanoparticles: Synthesis and (Bio) Analytical Applications”. In the thesis the luminescent properties of the nanocrystalline NaYF4:Yb3+,Tm3+ particles are improved and their use as labels and internal light sources in biomedical applications is introduced.

Mr. Kale has been working in the Department of biotechnology but is jointly supervised by Mika Lastusaari. The work of Mr. Kale is a great example how you can combine the chemistry behind the synthesis developement and the use of nanoparticles in applications in multidisciplinary areas.

Thesis in Doria web archive: Thesis

Synchrotron Light Finland 3.-4.12.2015

FSRUO Annual Workshop & School 2015 is held in Helsinki, Kumpula Science Campus on 3.-4.12.2015

Mika is giving a lecture in FSRUO (Finnish Synchrotron Radiation User Organisation) annual workshop in Helsinki on the matter of “Using Synchrotron-Based Methods for Understanding Solid State Oxides and Fluorides”

Seminar program and registration (www): Program FSRUO 2015
FSRUO homepage: WWW

MatSurf 9th Annual Seminar 9.11.

The 9th Annual MatSurf Seminar is held 9.11.2015 in Deparment of Physics and Astronomy, Quantum Auditorium from 9.00 forward.

We’re attending the seminar with a presentation of Hellen “Luminescent Non-Doped Laponites: Anionic Layered Nanosilicates” and also contribute to poster session starting at 15.20.

MatSurf stands for Turku University Centre for Materials and Surfaces and is a joint project of several research groups to make the most of the know-how and instruments in the field of Materials Research in Turku, Finland.

Seminar Flyer (pdf): Flyer MatSurf 2015
Abstract booklet (pdf): Abstracts 2015

Autumn start-up

To brighten the darkening autumn our group had a “Autumn Start-Up” dinner on Wednesday at restaurant Torre. The food was delicious and there was plenty of it.

Thanks everyone for a great evening!

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LUMDETR 2015 in Tartu, Estonia

We’re attending the 9th International Conference on Luminescent Detectors and Transformers of Ionizing Radiation in Tartu, Estonia on September 20-25.

Go see Mika at the poster Tu-P-41 on Tuesday (16:20-18:20 Poster Session I) with the topic “On the mechanism of persistent luminescence and tenebrescence in Na8Al6Si6O24(Cl2,S)”

Conference WWW:
Program: Program.pdf