Synthesis and luminescent properties of Er3+-activated LaBMoO6 green-emitting phosphors for optical thermometry

Er3+-activated LaBMoO6 green-emitting phosphors with high sensor sensitivity for optical thermometry. [Display omitted] •Under 380 nm excitation, all the samples emitted visible green emissions from the Er3+ ions.•The optimal doping concentration was 1 mol% and the critical distance was 28.47 Å.•The...

Full description

Saved in:
Bibliographic Details
Published in:Materials research bulletin 2018-11, Vol.107, p.314-320
Main Authors: Hua, Yongbin, Du, Peng, Su Yu, Jae
Format: Article
Language:English
Subjects:
COLOR
CONCENTRATION RATIO
ELECTRIC DIPOLES
EMISSION SPECTRA
ERBIUM IONS
EXCITATION
FIR technique
FLUORESCENCE
Luminescence
MATERIALS SCIENCE
Optical thermometry
PHOSPHORS
PHOTOLUMINESCENCE
QUENCHING
SENSITIVITY
SOL-GEL PROCESS
SYNTHESIS
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Er3+-activated LaBMoO6 green-emitting phosphors with high sensor sensitivity for optical thermometry. [Display omitted] •Under 380 nm excitation, all the samples emitted visible green emissions from the Er3+ ions.•The optimal doping concentration was 1 mol% and the critical distance was 28.47 Å.•The maximum sensor sensitivity of the studied phosphors was found to be as high as 0.0179 K−1 at 483 K.•The sensor sensitivity of the obtained samples was independent of Er3+ ion concentration. The Er3+-activated LaBMoO6 phosphors were synthesized by a sol-gel method. The photoluminescence (PL) emission intensity was revealed to be dependent on the Er3+ ion concentration and its maximum value was achieved when the doping concentration was 1 mol%. From theoretical analysis, one knows that the concentration quenching mechanism is dominated by the electric dipole-dipole interaction with a critical distance of 28.47 Å. On the basis of the temperature-dependent PL green emission spectra from the 2H11/2 and 4S3/2 thermally coupled levels by means of the fluorescence intensity ratio technique, the temperature sensing properties of the resultant compounds were studied. When the temperature was 483 K, the sensor sensitivity of the studied samples reached up to 0.017 K−1. It was found that the sensor sensitivity of the prepared phosphors was hardly varied by the doping concentration. These obtained characteristics suggest that the Er3+-activated LaBMoO6 phosphors have potential applications in optical thermometry.
ISSN:0025-5408
1873-4227
DOI:10.1016/j.materresbull.2018.07.030