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

• Type: Article in International Scientific Journal
• Date: 2019

Authors

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

Journal

Title: Materials Research Express

Vol. 6

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 12 Citations

Scopus - 16 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8