Zobrazeno 1 - 10
of 17
pro vyhledávání: '"E. B. da Costa"'
Publikováno v:
Optical Materials. 75:733-738
Generation of primary colors and white light through frequency upconversion using sol-gel derived 80SiO2:20PbF2 vitroceramic phosphors doped with Er3+, Er3+/Yb3+, Tm3+/Yb3+, and Er3+/Tm3+/Yb3+ excited at 980 nm is demonstrated. For Er3+ and Er3+/Yb3+
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea9e87eb98d93752b0c7f141128b2b94
https://doi.org/10.1016/j.optmat.2017.11.039
https://doi.org/10.1016/j.optmat.2017.11.039
Publikováno v:
Acta Médica Portuguesa, Vol 6, Iss 2 (1993)
Diphosphonates are potent inhibitors of bone resorption, they have been evaluated in several clinical trials for bone metastases. We performed a clinical study to evaluate the therapeutic effect of Disodium Pamidronate over pain and radiologic evolut
Externí odkaz:
https://doaj.org/article/3c1ac22dc97949328649ba35285cc806
Publikováno v:
Acta Médica Portuguesa, Vol 3, Iss 4 (1990)
Results obtained in 120 patients with gastric carcinoma, and submitted between 1982 and 1989, to a total gastrectomy and a new technique of reconstruction with jejunum, are analyzed retrospectively. This technique associates, a jejunoplication around
Externí odkaz:
https://doaj.org/article/20759c51655e48da94df144193c2de05
Publikováno v:
Journal of Luminescence. 144:87-90
Color tunable wide gamut light covering the greenish, yellow–green, yellow, orange, and reddish tone chromaticity region in Er3+/Eu3+-codoped lead–cadmium–germanate PbGeO3:PbF2:CdF2 glass phosphor is presented. The phosphors were synthesized, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0dc80c37e6517e5bc9955512d8451e9d
https://doi.org/10.1016/j.jlumin.2013.06.031
https://doi.org/10.1016/j.jlumin.2013.06.031
Publikováno v:
Journal of Luminescence. 132:299-304
Rare-earth doped oxyfluoride 75SiO2:25PbF2 nano-structured phosphors for white-light-emitting diodes were synthesized by thermal treatment of precursor sol–gel derived glasses. Room temperature luminescence features of Eu3+, Sm3+, Tb3+, Eu3+/Tb3+,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7ddaf06c63bf21069d851164d1a1c08
https://doi.org/10.1016/j.jlumin.2011.09.007
https://doi.org/10.1016/j.jlumin.2011.09.007
Autor:
Raphael Fonseca do Nascimento, E. B. da Costa, L. A. Bueno, Elias A. Silva, A. S. Gouveia-Neto
Publikováno v:
Materials Letters. 63:1999-2002
Temperature induced variable chromaticity lanthanide multidoped solid-state phosphors are presented. The phosphors are composed of ytterbium-sensitized multiple-doped (Tm, Er, Ho) PbGeO 3 –PbF 2 –CdF 2 glass excited at 1.064 µm. The temperature
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::822b8dd6a4b4a611c1e55cc61911c42b
https://doi.org/10.1016/j.matlet.2009.06.027
https://doi.org/10.1016/j.matlet.2009.06.027
Publikováno v:
Journal of Non-Crystalline Solids. 355:488-491
Upconversion luminescence in erbium-doped PbGeO3–PbF2–CdF2-based vitroceramic under 1540 nm infrared excitation is investigated. Luminescence signals around 410, 525, 550, 660 and 850 nm were generated and attributed to the 2H9/2, 2H11/2, 4S3/2 a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::616341f5e3de599dc3a1a82c2daf7bdb
https://doi.org/10.1016/j.jnoncrysol.2009.01.020
https://doi.org/10.1016/j.jnoncrysol.2009.01.020
Publikováno v:
Journal of Luminescence. 116:52-58
The effect of ytterbium ions upon energy transfer (ET) excited upconversion emission in Nd3+/Pr3+-codoped PbGeO3–PbF2–CdF2 glass under 810 nm diode laser excitation is investigated. The results revealed that the presence of Yb3+ ions in the Nd3+/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a06363902473f421636d9892b19e616b
https://doi.org/10.1016/j.jlumin.2005.02.013
https://doi.org/10.1016/j.jlumin.2005.02.013
Publikováno v:
Journal of Alloys and Compounds. 394:24-27
Visible frequency upconversion emission through resonant energy-transfer involving neodymium and praseodymium ions in PbGeO3–PbF2–CdF2 glass excited by a semiconductor laser at 810 nm is investigated. Luminescence emission centered around 485, 53
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff02b3c65cef118d60a679499896b910
https://doi.org/10.1016/j.jallcom.2004.10.030
https://doi.org/10.1016/j.jallcom.2004.10.030
Publikováno v:
Journal of Luminescence. 110:79-84
Intense red upconversion emission around 650 nm in PbGeO3–PbF2–CdF2 transparent glass ceramic containing β-PbF2:Ho3+ nanocrystals, is presented. The holmium-doped vitroceramic samples were excited by a 980 nm diode laser source. The 650 nm upcon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91f5f19f3e3ccb79ccac42aa6179d575
https://doi.org/10.1016/j.jlumin.2004.04.005
https://doi.org/10.1016/j.jlumin.2004.04.005