Thermal decomposition mediated Er3+/Yb3+ codoped NaGdF4 upconversion phosphor for optical thermometry

• Tipo: Artigo em Revista Científica Internacional
• Data: 2019

Autores

Maurya, SK (Autor) Outra; Kushawaha, R (Autor) Outra; Tiwari, SP (Autor) Outra; Kumar, A (Autor) Outra; Kumar, K (Autor) Outra; Joaquim C G E Esteves da Silva (Autor) FCUP

Revista

Título: Materials Research Express

Vol. 6

Editora: Institute of Physics Publishing

Indexação

ISI Web of Knowledge - 12 Citações

Scopus - 16 Citações

Outras Informações

ID Authenticus: P-00Q-MSW

DOI: 10.1088/2053-1591/ab20b4

Abstract (EN): Er3+/Yb3+ codoped NaGdF4 upconversion phosphor is synthesized by thermal decomposition route. The phase confirmation of synthesized sample is further confirmed by x-ray diffraction analysis. Particle size and elemental composition of phosphor is analyzed by field emission scanning electron microscopy (FESEM) and energy dispersive x-ray (EDX), respectively. The upconversion emission is measured by exciting the sample with 976 nm diode laser source. The fluorescence intensity ratio (FIR) of two close levels H-2(11/2) and S-4(3/2) is taken into account to study thermometry ability of sample for the temperature range of 301-506 K at a constant laser power (17.60 W cm(-2)). The sensor sensitivity of phosphor is found to 5.107 x 10(-3) K-1 at 301 K.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8