Hydrothermal synthesis of optically active rare earth fluorides
Abstract
Hydrothermal method has great interest in recent years for synthesis of nano- and micro- crystals of upconverting rare earth (RE) fluorides, with controlled morphology and high purity, under high temperatures and pressures. Some surfactants (ethylenediaminetetraacetic acid (EDTA), polyvinylpyrrolidone (PVP), oleic acid (OA)) along with different type of solvents are added in order to control size, morphology and crystalline phases of particles. In this work Yb3+/Er3+ co-doped YF3 and NaYF4 fine powders were synthesized using the hydro/solvo thermal method in the present of EDTA as a complexing agent. Effect of the processing parameters on the particles crystal structure, morphology and optical properties were estimated on the basis of X-ray diffractometry (XRPD), scanning electron microscopy (SEM) and photoluminescence measurement. It was shown that in terms of increased concentration of RE ions in aqueous solvent media the hexagonal β-NaYF4:Yb3+/Er3+ phase with the most efficient gree...n emission were synthesized. On the other side, the occurrence of cubic α-NaYF4:Yb3+/Er3+ and orthorhombic YF3:Yb3+/Er3+ were observed with a decrease of the RE ions when ethanol is used as a solvent. All of the samples provide intense green emission after been excited with infrared light (λ = 978 nm), which is assigned to the Er3+ (2H11/2, 4S3/2) → 4I15/2 electronic transitions.
Keywords:
hydrothermal synthesis / upconversion / rare earths / optical propertiesSource:
Programme and book of abstracts / 11th Students' Meeting [and] ESR [Early Stage Researchers] Workshop, COST IC1208 Conference for Young Scientists in Ceramics, October 21-24, 2015, Novi Sad, 2015, 58-59Publisher:
- Novi Sad : Faculty of Technology, University of Novi Sad
Funding / projects:
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - CONF AU - Dinić, Ivana AU - Mančić, Lidija AU - Rabanal, Maria Eugenia AU - Milošević, Olivera PY - 2015 UR - https://dais.sanu.ac.rs/123456789/743 AB - Hydrothermal method has great interest in recent years for synthesis of nano- and micro- crystals of upconverting rare earth (RE) fluorides, with controlled morphology and high purity, under high temperatures and pressures. Some surfactants (ethylenediaminetetraacetic acid (EDTA), polyvinylpyrrolidone (PVP), oleic acid (OA)) along with different type of solvents are added in order to control size, morphology and crystalline phases of particles. In this work Yb3+/Er3+ co-doped YF3 and NaYF4 fine powders were synthesized using the hydro/solvo thermal method in the present of EDTA as a complexing agent. Effect of the processing parameters on the particles crystal structure, morphology and optical properties were estimated on the basis of X-ray diffractometry (XRPD), scanning electron microscopy (SEM) and photoluminescence measurement. It was shown that in terms of increased concentration of RE ions in aqueous solvent media the hexagonal β-NaYF4:Yb3+/Er3+ phase with the most efficient green emission were synthesized. On the other side, the occurrence of cubic α-NaYF4:Yb3+/Er3+ and orthorhombic YF3:Yb3+/Er3+ were observed with a decrease of the RE ions when ethanol is used as a solvent. All of the samples provide intense green emission after been excited with infrared light (λ = 978 nm), which is assigned to the Er3+ (2H11/2, 4S3/2) → 4I15/2 electronic transitions. PB - Novi Sad : Faculty of Technology, University of Novi Sad C3 - Programme and book of abstracts / 11th Students' Meeting [and] ESR [Early Stage Researchers] Workshop, COST IC1208 Conference for Young Scientists in Ceramics, October 21-24, 2015, Novi Sad T1 - Hydrothermal synthesis of optically active rare earth fluorides SP - 58 EP - 59 UR - https://hdl.handle.net/21.15107/rcub_dais_743 ER -
@conference{ author = "Dinić, Ivana and Mančić, Lidija and Rabanal, Maria Eugenia and Milošević, Olivera", year = "2015", abstract = "Hydrothermal method has great interest in recent years for synthesis of nano- and micro- crystals of upconverting rare earth (RE) fluorides, with controlled morphology and high purity, under high temperatures and pressures. Some surfactants (ethylenediaminetetraacetic acid (EDTA), polyvinylpyrrolidone (PVP), oleic acid (OA)) along with different type of solvents are added in order to control size, morphology and crystalline phases of particles. In this work Yb3+/Er3+ co-doped YF3 and NaYF4 fine powders were synthesized using the hydro/solvo thermal method in the present of EDTA as a complexing agent. Effect of the processing parameters on the particles crystal structure, morphology and optical properties were estimated on the basis of X-ray diffractometry (XRPD), scanning electron microscopy (SEM) and photoluminescence measurement. It was shown that in terms of increased concentration of RE ions in aqueous solvent media the hexagonal β-NaYF4:Yb3+/Er3+ phase with the most efficient green emission were synthesized. On the other side, the occurrence of cubic α-NaYF4:Yb3+/Er3+ and orthorhombic YF3:Yb3+/Er3+ were observed with a decrease of the RE ions when ethanol is used as a solvent. All of the samples provide intense green emission after been excited with infrared light (λ = 978 nm), which is assigned to the Er3+ (2H11/2, 4S3/2) → 4I15/2 electronic transitions.", publisher = "Novi Sad : Faculty of Technology, University of Novi Sad", journal = "Programme and book of abstracts / 11th Students' Meeting [and] ESR [Early Stage Researchers] Workshop, COST IC1208 Conference for Young Scientists in Ceramics, October 21-24, 2015, Novi Sad", title = "Hydrothermal synthesis of optically active rare earth fluorides", pages = "58-59", url = "https://hdl.handle.net/21.15107/rcub_dais_743" }
Dinić, I., Mančić, L., Rabanal, M. E.,& Milošević, O.. (2015). Hydrothermal synthesis of optically active rare earth fluorides. in Programme and book of abstracts / 11th Students' Meeting [and] ESR [Early Stage Researchers] Workshop, COST IC1208 Conference for Young Scientists in Ceramics, October 21-24, 2015, Novi Sad Novi Sad : Faculty of Technology, University of Novi Sad., 58-59. https://hdl.handle.net/21.15107/rcub_dais_743
Dinić I, Mančić L, Rabanal ME, Milošević O. Hydrothermal synthesis of optically active rare earth fluorides. in Programme and book of abstracts / 11th Students' Meeting [and] ESR [Early Stage Researchers] Workshop, COST IC1208 Conference for Young Scientists in Ceramics, October 21-24, 2015, Novi Sad. 2015;:58-59. https://hdl.handle.net/21.15107/rcub_dais_743 .
Dinić, Ivana, Mančić, Lidija, Rabanal, Maria Eugenia, Milošević, Olivera, "Hydrothermal synthesis of optically active rare earth fluorides" in Programme and book of abstracts / 11th Students' Meeting [and] ESR [Early Stage Researchers] Workshop, COST IC1208 Conference for Young Scientists in Ceramics, October 21-24, 2015, Novi Sad (2015):58-59, https://hdl.handle.net/21.15107/rcub_dais_743 .