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Hydrothermal synthesis and photoluminescence of host sensitized Yb2O3: Ho3+ nanorods
- Source :
- Materials Research Express. 6:016203
- Publication Year :
- 2018
- Publisher :
- IOP Publishing, 2018.
-
Abstract
- Ho3+ doped Yb2O3 upconverstion (UC) luminescent nanorods have been prepared using a simple hydrothermal method followed by an annealing treatment. The as-prepared samples were investigated by powder x-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence (PL) spectra for their structural, morphologic and UC luminescent properties. The XRD patterns indicate that all samples are crystallized in the cubic phase of Yb2O3. SEM images reveal that the samples have a rod-shape morphology with the length ranging from 0.5 to 1.0 μm and the diameter ~100 nm. Under 980 nm excitation, the as-obtained nanorods exhibit bight orange emission which is attributed to the characteristic transitions of 5F4, 5S2 → 5I8, 5F5 → 5I8 and 5F4, 5S2 → 5I7 of Ho3+ ion, respectively. The UC emission intensity initially increases as Ho3+ contents increase, reaching a maximum at 2.0 mol%, and then decreases due to the concentration quenching effect. The possible UC mechanisms and energy transfer process were also discussed.
- Subjects :
- 010302 applied physics
Photoluminescence
Materials science
Polymers and Plastics
Annealing (metallurgy)
Scanning electron microscope
Metals and Alloys
Analytical chemistry
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Hydrothermal circulation
Photon upconversion
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Biomaterials
0103 physical sciences
Hydrothermal synthesis
Nanorod
0210 nano-technology
Luminescence
Subjects
Details
- ISSN :
- 20531591
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- Materials Research Express
- Accession number :
- edsair.doi...........4d77fe06bdf01783cba756f351c67304