Zobrazeno 1 - 10 of 24 pro vyhledávání: '"Luidgi Giordano"'
1
Akademický článek
From synthesis to fabrication: Engineering thin translucent films with green persistent luminescent nanoparticles
Autor: Douglas L. Fritzen, Gabriel Nardy, Marcelo C. Portes, Luidgi Giordano, Everton Bonturim, Verônica C. Teixeira, Lucas C.V. Rodrigues
Publikováno v: Optical Materials: X, Vol 20, Iss , Pp 100271- (2023)
Green-emitting ZnGa2O4:Mn2+ persistent luminescent nanoparticles were synthesized via a solvothermal method followed by a microwave-assisted sintering at 1150 °C. The obtained cubic-like particles averaged 62 ± 16 nm by Transmission Electron Micros
Externí odkaz: https://doaj.org/article/5735a55eebd54e05b0bf1881b1c89604
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2
Akademický článek
Enhanced red-UC luminescence through Ce3+ co-doping in NaBiF4:Yb3+/Ho3+(Er3+)/Ce3+ phosphors prepared by ultrafast coprecipitation approach
Autor: Luidgi Giordano, Hongli Du, Victor Castaing, Fangfei Luan, Dongcai Guo, Bruno Viana
Publikováno v: Optical Materials: X, Vol 16, Iss , Pp 100199- (2022)
Series of Yb3+/Ho3+(Er3+)/Ce3+ co-doped NaBiF4 phosphors were synthesized through an ultrafast co-precipitation reaction technique at room temperature. The effect of the Ce3+ ions on the crystal structure and upconversion (UC) luminescence properties
Externí odkaz: https://doaj.org/article/936e6e43210f4bcdb9e16e61600f859e
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3
Akademický článek
Effect of the Elaboration Method on Structural and Optical Properties of Zn1.33Ga1.335Sn0.33O4:0.5%Cr3+ Persistent Luminescent Nanomaterials
Autor: Guanyu Cai, Luidgi Giordano, Cyrille Richard, Bruno Viana
Publikováno v: Nanomaterials, Vol 13, Iss 15, p 2175 (2023)
Near-infrared (NIR) persistent luminescence (PersL) materials have demonstrated promising developments for applications in many advanced fields due to their unique optical properties. Both high-temperature solid-state (SS) or hydrothermal (HT) method
Externí odkaz: https://doaj.org/article/e696d00d0a6d44f1b7c80efcc0845968
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6
Akademický článek
Opportunities for Persistent Luminescent Nanoparticles in Luminescence Imaging of Biological Systems and Photodynamic Therapy
Autor: Douglas L. Fritzen, Luidgi Giordano, Lucas C. V. Rodrigues, Jorge H. S. K. Monteiro
Publikováno v: Nanomaterials, Vol 10, Iss 10, p 2015 (2020)
The use of luminescence in biological systems allows us to diagnose diseases and understand cellular processes. Persistent luminescent materials have emerged as an attractive system for application in luminescence imaging of biological systems; the a
Externí odkaz: https://doaj.org/article/10bc537bb8ef4b809aee7a9a9f94fb0d
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7
Photochromism and Persistent Luminescence in Ni-Doped ZnGa2O4 Transparent Glass-Ceramics: Toward Optical Memory Applications
Autor: Didier Gourier, Luidgi Giordano, Bruno Viana, Mathieu Allix, Cyrille Richard, Victor Castaing
Publikováno v: Journal of Physical Chemistry C
Journal of Physical Chemistry C, American Chemical Society, 2021, 125 (18), pp.10110-10120. ⟨10.1021/acs.jpcc.1c01900⟩
Journal of Physical Chemistry C, 2021, 125 (18), pp.10110-10120. ⟨10.1021/acs.jpcc.1c01900⟩
International audience; Persistent luminescence and photochromism are two fascinating optical properties that involve charge trapping via defects and their release due to an external stimulation. In both processes, it is possible to define 1 (or on)
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46d05f0c5ec1f4d29004fe5c0f6a4e72
https://doi.org/10.1021/acs.jpcc.1c01900
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8
Tm:CALGO lasers at 2.32 µm: cascade lasing and upconversion pumping
Autor: Hippolyte Dupont, Pavel Loiko, Aleksey Tyazhev, Luidgi Giordano, Zhongben Pan, Hongwei Chu, Dechun Li, Bruno Viana, Ammar Hideur, Lauren Guillemot, Alain Braud, Patrice Camy, Patrick Georges, Frédéric Druon
Publikováno v: Optics Express. 31:18751
We report on the first laser operation of a disordered Tm:CaGdAlO4 crystal on the 3H4 → 3H5 transition. Under direct pumping at 0.79 µm, it generates 264 mW at 2.32 µm with a slope efficiency of 13.9% and 22.5% vs. incident and absorbed pump powe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c1a42ae4360ec25fa5e56dacb3d86af5
https://doi.org/10.1364/oe.487590
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10
New synthetic methods for upconverting materials and energy transfer from upconversion to persistent luminescence
Autor: Luidgi Giordano
Publikováno v: Biblioteca Digital de Teses e Dissertações da USP
Universidade de São Paulo (USP)
instacron:USP
Materiais com upconversion são capazes de converter dois ou mais fótons de baixa energia para um único fóton de maior energia. Para o caso do upconversion ocasionado por pares de íons terras-raras, a excitação comumente encontra-se no infraver
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1fd4e6ced727b73ef48ba847d09c7fbc
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