Role of Ca2+ co-dopants on structural and optical properties of YF3:Tm3+/Yb3+ upconversion phosphor for improved optical thermometry

• Tipo: Artigo em Revista Científica Internacional
• Data: 2018

Autores

Kumar, A (Autor) Outra; Tiwari, SP (Autor) Outra; Sardar, A (Autor) Outra; Kumar, K (Autor) Outra; Joaquim C G E Esteves da Silva (Autor) FCUP

Revista

Título: Sensors and Actuators, A: Physical

Vol. 280

Páginas: 179-187

ISSN: 0924-4247

Editora: Elsevier

Indexação

ISI Web of Knowledge - 23 Citações

Scopus - 25 Citações

Outras Informações

ID Authenticus: P-00P-E34

DOI: 10.1016/j.sna.2018.07.011

Abstract (EN): This work describes the synthesis, structural and optical properties of Tm3+/Yb-3 doped and Ca2+ co-doped YF3 upconversion phosphor material. The effect of Ca2+ ions co-dopant concentration is varied at 0, 10, 20 and 30 mol% to observe it's effect on YF3:Tm3+/Yb3+ through different characterizations like XRD, XPS, FE-SEM, FTIR, UV-vis and upconversion measurements. Dominant upconversion emission bands are found at 450, 476, 645 and 696 nm emission wavelengths corresponding to the D-1(2)-> F-3(4), (1)G(4)-> H-3(6) (1)G(4)-> F-3(4) and F-3(3)-> H-3(6) transitions within Tm3+ activator center on 976nm excitation. Finally, prepared samples are utilized in temperature sensing application demonstrations with Ca2+ ions co-dopants concentration variations.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9