Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Toni Riedener"'
Autor:
Toni Riedener, Hans U. Güdel
Publikováno v:
CHIMIA, Vol 51, Iss 3 (1997)
Intense NIR-to-VIS upconversion luminescence is observed in Er3+-doped heavier halide host materials such as chlorides and bromides. The multiphonon relaxation rate is found to be a crucial factor in the chemical tuning of the excited-state propertie
Externí odkaz:
https://doaj.org/article/5b96ae60dbad45b1a3e0ef4d0149bf0f
Publikováno v:
Physical Review B. 61:11460-11471
We present variable temperature (15--295 K) and pressure (ambient--102 kbar) studies of energy transfer in ${\mathrm{Cr}}^{3+}:{\mathrm{Tm}}^{3+}:\mathrm{YAG}.$ The ${\mathrm{Cr}}^{3+}\ensuremath{\rightarrow}{\mathrm{Tm}}^{3+}$ energy-transfer rate w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c54ad580b65d3fa93e2f47ae600abb7a
https://doi.org/10.1103/physrevb.61.11460
https://doi.org/10.1103/physrevb.61.11460
Publikováno v:
Chemical Physics Letters. 321:445-451
A pressure induced phase transition from the high temperature to the low temperature form of Li3PO4 was observed and confirmed using Mn5+ luminescence spectroscopy and Raman scattering. The larger 1 E splitting and shorter lifetime observed in the lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb209a1c0cf771855eaeb4b1f7a078e1
https://doi.org/10.1016/s0009-2614(00)00386-9
https://doi.org/10.1016/s0009-2614(00)00386-9
Publikováno v:
Journal of Alloys and Compounds. :37-41
Europium–acetate complexation was studied using luminescence spectroscopy as a function of temperature between 8 and 59°C. The 5 D 0 → 7 F 0 luminescence transition of Eu 3+ was used to identify the presence of 1:1, 1:2, and 1:3 complexes with a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8d70d844e05595350c441afe29ad2f7
https://doi.org/10.1016/s0925-8388(00)00599-5
https://doi.org/10.1016/s0925-8388(00)00599-5
Publikováno v:
Physical Review B. 61:9277-9286
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::789b34ba4ffb263c37494b94deb0c419
https://doi.org/10.1103/physrevb.61.9277
https://doi.org/10.1103/physrevb.61.9277
Publikováno v:
Physical Review B. 57:4369-4376
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1958c847d071bc894a424fc781943f3b
https://doi.org/10.1103/physrevb.57.4369
https://doi.org/10.1103/physrevb.57.4369
Publikováno v:
Journal of Luminescence. :447-450
Cooperative visible upconversion is reported in crystals of Cs 3 Lu 2 Br 9 : 1% Yb 3+ , Cs 3 Lu 2 Br 9 : 10% Yb 3+ , and Cs 3 Yb 2 Br 9 . The near-infrared emission decays twice as fast as the visible emission as expected from theory. Both, the 10% a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3c8dd8846c9b650d285dce32026160c
https://doi.org/10.1016/s0022-2313(97)00233-0
https://doi.org/10.1016/s0022-2313(97)00233-0
Autor:
Hans U. Güdel, Toni Riedener
Publikováno v:
The Journal of Chemical Physics. 107:2169-2174
NIR-to-VIS upconversion mechanisms upon excitation into 4I11/2 around 980 nm in the Er3+ doped low energy phonon host material RbGd2Br7 are identified and analyzed. The small energy difference between the first excitation step 4I15/2→4I11/2 and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0dc4131b0301b910cc63b55f737ca57
https://doi.org/10.1063/1.474597
https://doi.org/10.1063/1.474597
Publikováno v:
Physical Review B. 56:1800-1808
Efficient near infrared to visible upconversion luminescence is reported in the low phonon-energy host material ${\mathrm{Ba}}_{2}{\mathrm{YCl}}_{7}:x%$ ${\mathrm{Er}}^{3+}$ ($x=1,$ 10, 100). The upconversion mechanisms upon ${}^{4}{I}_{9/2}$ excitat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0648794876e7b7e4781e84253099f885
https://doi.org/10.1103/physrevb.56.1800
https://doi.org/10.1103/physrevb.56.1800
Publikováno v:
Advanced Materials. 8:668-672
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccafdc26550aa92b26906ad0698d7ae1
https://doi.org/10.1002/adma.19960080816
https://doi.org/10.1002/adma.19960080816