Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Bernd Ahrens"'
Autor:
Marion Straßer, Joachim H. X. Schrauth, Sofia Dembski, Daniel Haddad, Bernd Ahrens, Stefan Schweizer, Bastian Christ, Alevtina Cubukova, Marco Metzger, Heike Walles, Peter M. Jakob, Gerhard Sextl
Publikováno v:
Beilstein Journal of Nanotechnology, Vol 8, Iss 1, Pp 1484-1493 (2017)
New multifunctional nanoparticles (NPs) that can be used as contrast agents (CA) in different imaging techniques, such as photoluminescence (PL) microscopy and magnetic resonance imaging (MRI), open new possibilities for medical imaging, e.g., in the
Externí odkaz:
https://doaj.org/article/be4c759dd75f41c49ea5b3c010d27223
Publikováno v:
Fiber Lasers and Glass Photonics: Materials through Applications III.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::05ab57c09c122d22bad171273904b7a5
https://doi.org/10.1117/12.2621250
https://doi.org/10.1117/12.2621250
Autor:
Bernd Ahrens, Peter W. Nolte, Mreedula Mungra, A. Charlotte Rimbach, Franziska Steudel, Stefan Schweizer
Publikováno v:
Optical Materials. 88:74-79
Lanthanide-doped borate glasses represent an attractive alternative as frequency-converter for white-light generation. The CIE colour coordinates of Tm 3 + , Tb 3 + , and Eu 3 + double- and triple-doped glasses can be tuned over a broad spectral rang
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc8028dfe30196937b33f5488acb7b6f
https://doi.org/10.1016/j.optmat.2018.11.007
https://doi.org/10.1016/j.optmat.2018.11.007
Publikováno v:
Journal of Non-Crystalline Solids. 499:380-386
The glass properties as well as the photoluminescence quantum efficiency of Li2O-B2O3 and Li2O-Al2O3-B2O3 glasses are investigated; both glass systems are optically-activated by the addition of the lanthanide ions Tb3+, Eu3+, and Dy3+. Glass transiti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::11329643c2a4f6f4a66f496f0239b1bc
https://doi.org/10.1016/j.jnoncrysol.2018.07.029
https://doi.org/10.1016/j.jnoncrysol.2018.07.029
Publikováno v:
Physics and Chemistry of Glasses: European Journal of Glass Science and Technology Part B. 59:130-134
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a82ddecdfbdecb5975421c0e3bf5e37a
https://doi.org/10.13036/17533562.59.3.033
https://doi.org/10.13036/17533562.59.3.033
Publikováno v:
Journal of Luminescence. 192:71-76
The aim was to design a multi-chromatic phosphor based on the colour mixing principle, whereby white light can be produced from an appropriate mixture of blue, green, and red emissions by a single phosphor. In this perspective, Tm2O3, Tb4O7, and Eu2O
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6cf590dc50d268cbbc171a415df5fac4
https://doi.org/10.1016/j.jlumin.2017.06.028
https://doi.org/10.1016/j.jlumin.2017.06.028
Autor:
Franziska Steudel, Bernd Ahrens, Sebastian Loos, Mreedula Mungra, Jacqueline A. Johnson, Russell L. Leonard, Adam Wesley Evans, Stefan Schweizer
Publikováno v:
Journal of Luminescence. 187:298-303
Tb 3 + single- and Tb 3 + / Eu 3 + double-doped borate as well as fluorozirconate glasses are investigated for their photoluminescence and energy transfer properties based on the concentration of the dopants. All the double-doped glasses consist of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::324b94abfd5d3a9586a16b75123ec47b
https://doi.org/10.1016/j.jlumin.2017.03.030
https://doi.org/10.1016/j.jlumin.2017.03.030
Publikováno v:
Journal of Luminescence. 181:31-35
Tb 3 + and Eu 3 + single- and double-doped barium borate glasses are analyzed for their temperature-dependent luminescence and energy transfer properties. The glasses are investigated in the temperature range from 15 K to 700 K. The Tb 3 + doped glas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4749f64bf75edbf192aafa72b5b952b0
https://doi.org/10.1016/j.jlumin.2016.08.066
https://doi.org/10.1016/j.jlumin.2016.08.066
Autor:
Peter W. Nolte, Franziska Steudel, A. Charlotte Rimbach, Timo Malvisalo, Bernd Ahrens, Stefan Schweizer
Publikováno v:
Materials Today: Proceedings. 4:S128-S134
Thermal management is one of the crucial concerns for mid- and high-power white light-emitting diodes (LEDs). Most of the currently available white LEDs on the market consist of a blue LED chip coated with a yellow phosphor-polymer composite. Besides
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::167a633515c9fe0818904743f86f6425
https://doi.org/10.1016/j.matpr.2017.09.177
https://doi.org/10.1016/j.matpr.2017.09.177
Publikováno v:
Radiation Measurements. 90:274-278
Rare-earth doped borate glasses and glass ceramics are investigated for their potential as photon converters. Thermal processing of the as-made glass results in the formation of nanocrystals therein. For optical activation, the glasses are doped with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70f92dbfa4ad41b682a242aa42bb61ed
https://doi.org/10.1016/j.radmeas.2015.12.046
https://doi.org/10.1016/j.radmeas.2015.12.046