Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Fábio José, Caixeta"'
Autor:
Karmel De Oliveira Lima, Fábio José Caixeta, Vítor Dos Santos De Souza, Leonardo Sousa Rosa, Victor Del Vecchio Soares, Carolina Assunção Crumo, Ivana Aparecida Borin, Jefferson Luis Ferrari, Rogéria Rocha Gonçalves
Publikováno v:
Frontiers in Chemistry, Vol 10 (2022)
This paper reports on the preparation of Er3+/Yb3+/Tm3+, Er3+/Yb3+/Nd3+, and Er3+/Tm3+/Nd3+ triply doped and Er3+-doped SiO2-Ta2O5 glass ceramic nanocomposites and active planar waveguides by the sol–gel process using the dip-coating technique as d
Externí odkaz:
https://doaj.org/article/cf3a4de41f1b401e94aa5ba929cf2dbb
Autor:
Hayra do Prado Labaki, Fábio José Caixeta, Natasha Policei Marques, Éder José Guidelli, Rogéria Rocha Gonçalves
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Radioluminescence and visible photoluminescence tunability features from a single Tm3+-doped yttrium tantalate phosphor prepared by a soft sol–gel method designed to afford cubic Y3TaO7 and monoclinic M′-YTaO4 crystalline phases are reported.
Autor:
Fernanda Hediger Borges, Joana Costa Martins, Fábio José Caixeta, Luis D. Carlos, Rute A.S. Ferreira, Rogéria Rocha Gonçalves
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
No abstract available. This work was supported by the Brazilian funding agencies Fapesp (grant number 2017/11301-2 and 2020/05319-9, and the scholarships processes numbers 2017/10424-3, 2018/04587-0, and 2020/00277-6), CNPq (grant number 303110/2019-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4fadb7a5185d067a8cbbece7a4d0b9e
http://hdl.handle.net/10773/36062
http://hdl.handle.net/10773/36062
Autor:
Rogéria Rocha Gonçalves, Rute A. S. Ferreira, Joana Costa Martins, Luís D. Carlos, Fernanda Hediger Borges, Rafael Ramiro Pereira, Fábio José Caixeta
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
This study investigates how rare earth ion (RE3+) concentration affects stabilization of the crystalline structure and infrared-to-visible upconversion (UC) in Er3+/Yb3+ co-doped yttrium tantalates, synthesized by the sol–gel method. Under 980 nm,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1162a8120b38e5c72e49bc620843454
http://hdl.handle.net/10773/36051
http://hdl.handle.net/10773/36051
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Highly intense NIR emissions in the first and second biological windows and a remarkable UV–Vis and NIR to NIR energy conversion were observed for Pr3+, Yb3+ co-doped yttria nanoparticles, synthesized via the homogeneous precipitation method. A sin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58652b78ab1883e3b920344669a0e757
Autor:
Vítor dos Santos de Souza, Fábio José Caixeta, Karmel de Oliveira Lima, Rogéria Rocha Gonçalves
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb897e7e7bc06232fd1b8f34840e03bf
Autor:
Fernanda Hediger Borges, Rogéria Rocha Gonçalves, Rute A. S. Ferreira, Silvana Ruella de Oliveira, Rafael Ramiro Pereira, Fábio José Caixeta
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
We report the synthesis of a Y3TaO7 solid solution containing a high Eu3+ concentration (from 7 up to 50 mol%) and investigate how Eu3+ influences the Y3TaO7 crystallization process. To this end, we evaluate the Y3TaO7 structural features and photolu
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
A dual tunable visible (reddish, orangish, blueish and white emission) and near infrared energy conversion in Pr3+-doped yttrium tantalate prepared by sol-gel method were observed depending on the ratio of radiative transitions from the 3P0 and 1D2 e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44f5971575fc3b111092fe76f9a9796d