Upconversion properties of Gd-based ceramics, attached into polystyrene films
Por:
Carro-Gastélum A., Carmona-Téllez S., Loera-Serna S., Mariscal-Becerra L., Murrieta S H., Alarcón-Flores G., Falcony C.
Publicada:
1 feb 2021
Ahead of Print:
1 ene 2020
Resumen:
Tm3+- and Yb3+-doped lithium-gadolinium oxide (Li-Gd2O3) ceramics, prepared by the simple evaporation technique, were incorporated into polystyrene (PS) films (as recycled Styrofoam). A study of the upconversion (UC) emission from Tm3+ as well as Yb3+ ions was performed under continuous wave excitation of a 980-nm laser, for both powder and PS film samples. High-intensity light emissions (UC) were observed at 476, 488, and 665 nm, associated with inter electronic energy state transitions of the Tm3+ ion, from 1D2 to 3F4, 1G4 to 3H6, and 3F3 to 3H6, respectively. Yb3+ presence makes possible the thulium blue emission in the UC luminescence because it acts as a sensitizer under 980-nm excitation. Lithium is used as part of the host lattice (Lix-Gd2-xO3; 0 = x = 1) in order to achieve a greater crystallinity as Li+ acts as fluxing agent. The PS films remain highly transparent in the light’s visible region even after the incorporation of the ceramic particles (around 80% T). © 2020, Australian Ceramic Society.
Filiaciones:
Carro-Gastélum A.:
Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Unidad Legaria, Calzada Legaria 694 Irrigación, Miguel Hidalgo, Mexico City, 11500, Mexico
Carmona-Téllez S.:
CONACYT-Benemérita Universidad Autónoma de Puebla, Postgrado en Física Aplicada, Facultad de Ciencias Físico-Matemáticas, Col. San Manuel Ciudad Universitaria, Benemérita Universidad Autónoma de Puebla, Av. San Claudio y Av. 18 sur, Puebla Pue, CP 72570, Mexico
Loera-Serna S.:
Universidad Autónoma Metropolitana, Campus Azcapotzalco, Avenida San Pablo Xalpa 180, Azcapotzalco Reynosa Tamaulipas, Mexico City, 02200, Mexico
Mariscal-Becerra L.:
Instituto de Física de la Universidad Nacional Autónoma de México, Circuito de la Investigación Científica, Ciudad Universitaria Coyoacán, Mexico City, 04510, Mexico
Murrieta S H.:
Instituto de Física de la Universidad Nacional Autónoma de México, Circuito de la Investigación Científica, Ciudad Universitaria Coyoacán, Mexico City, 04510, Mexico
Alarcón-Flores G.:
Instituto Politécnico Nacional, Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada, Unidad Legaria, Calzada Legaria 694 Irrigación, Miguel Hidalgo, Mexico City, 11500, Mexico
Falcony C.:
Departamento de Física del Centro de Investigación y de Estudios Avanzados, IPN, Av. Instituto Politécnico Nacional 2508 San Pedro Zacatenco Gustavo A. Madero, Mexico City, 07360, Mexico
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