The green upconversion emission mechanism investigation of GdVO4:Yb3+, Er3+ via tuning of the sensitizer concentration

Oh, Ju Hyun; Moon, Byung Kee; Choi, Byung Chun; Jeong, Jung Hyun; Kim, Junghwan; Lee, Ho Sueb

doi:10.1016/j.solidstatesciences.2015.02.010

Cited by 33 publications

(9 citation statements)

References 27 publications

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“…In order to generate efficient UC luminescence, the inorganic matrices co-doped with rare earth ions (typically Ho 3+ , Er 3+ and Tm 3+ ) are commonly used, such as vanadates, phosphates, borates, fluorides, oxides etc. [1][2][3][6][7][8][9][10][11][12][13][14][15][16]. Currently, up-converting (nano)materials are commonly studied in terms of the components of solar cells [17], bioimaging [18,19], nanothemrometry [3,[20][21][22][23][24][25][26], forensics [27], composite membranes etc.…”

Section: Introductionmentioning

confidence: 99%

Generation of Pure Green Up-Conversion Luminescence in Er3+ Doped and Yb3+-Er3+ Co-Doped YVO4 Nanomaterials under 785 and 975 nm Excitation

et al. 2022

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Materials that generate pure, single-color emission are desirable in the development and manufacturing of modern optoelectronic devices. This work shows the possibility of generating pure, green up-conversion luminescence upon the excitation of Er3+-doped nanomaterials with a 785 nm NIR laser. The up-converting inorganic nanoluminophores YVO4: Er3+ and YVO4: Yb3+ and Er3+ were obtained using a hydrothermal method and subsequent calcination. The synthesized vanadate nanomaterials had a tetragonal structure and crystallized in the form of nearly spherical nanoparticles. Up-conversion emission spectra of the nanomaterials were measured using laser light sources with λex = 785 and 975 nm. Importantly, under the influence of the mentioned laser irradiation, the as-prepared samples exhibited bright green up-conversion luminescence that was visible to the naked eye. Depending on the dopant ions used and the selected excitation wavelengths, two (green) or three (green and red) bands originating from erbium ions appeared in the emission spectra. In this way, by changing the UC mechanisms, pure green luminescence of the material can be obtained. The proposed strategy, in combination with various single-doped UC nanomaterials activated with Er3+, might be beneficial for modern optoelectronics, such as light-emitting diodes with a rich color gamut for back-light display applications.

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Section: Introductionmentioning

confidence: 99%

Generation of Pure Green Up-Conversion Luminescence in Er3+ Doped and Yb3+-Er3+ Co-Doped YVO4 Nanomaterials under 785 and 975 nm Excitation

et al. 2022

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“…There are only a few reports about the synthesis and properties of up‐converting, Ln 3+ ‐doped vanadate nanoparticles . The studies available in the literature mainly refer to YVO 4 and less to GdVO 4 matrices . What is more, nanomaterials showing UC based on LaVO 4 and LuVO 4 are not known or only their bulk counterparts were investigated, like in the case of LaVO 4 .…”

Section: Introductionmentioning

confidence: 99%

“…[25][26][27][28][29] The studies available in the literature mainly refer to YVO 4 and less to GdVO 4 matrices. [30][31][32][33] What is more, nanomaterials showing UC based on LaVO 4 and LuVO 4 are not known or only their bulk counterparts were investigated, like in the case of LaVO 4 . 34,35 In our research, we expand the range of investigated nanomaterials and compare their up-conversion properties.…”

Section: Introductionmentioning

confidence: 99%

REVO₄‐Based Nanomaterials (RE = Y, La, Gd, and Lu) as Hosts for Yb³⁺/Ho³⁺, Yb³⁺/Er³⁺, and Yb³⁺/Tm³⁺ Ions: Structural and Up‐Conversion Luminescence Studies

2016

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Rare‐earth vanadates of the form REVO4 (RE = Y, La, Gd, and Lu) doped by Yb3+/Ho3+, Yb3+/Er3+, or Yb3+/Tm3+ lanthanide ions were successfully synthesized using the sol–gel method and annealing at 600°C in an air atmosphere. The structure and morphology of the prepared nanocrystals were investigated by X‐ray diffraction, thermogravimetric analysis, transmission electron microscopy, and energy‐dispersive X‐ray spectroscopy. All prepared materials were homogenous and had nanosized dimensions. Their elemental compositions were confirmed by optical emission spectrometry. Spectroscopic analysis of the materials was carried out by measuring excitation and emission spectra, luminescence decays, and dependence between the intensity of the luminescence and the laser energy. Following effective excitation by NIR radiation, Ln3+ co‐doped vanadate matrices exhibited a strong up‐conversion (UC) luminescence. Differences in spectroscopic properties between monoclinic LaVO4 and tetragonal YVO4, GdVO4, or LuVO4 doped by Ln3+ ions were observed, indicating the influence of the crystal structure on the UC emission. Drawing conclusions from these spectroscopic investigations, the UC mechanisms were proposed, including energy‐transfer processes between Yb3+ ions and emitting ions.

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“…The good aqueous colloidal stability, low toxicity and excellent self-heating efficacy make these novel magnetic, luminescent nanomaterials suitable for the hyperthermia treatment of cancer, and the luminescent entity helps us to identify the location of magnetic nanoparticles during in vitro cellular imaging [20,21,22,23,24]. …”

Section: Introductionmentioning

confidence: 99%

“…Herein, we develop, for the first time, a novel and simple route to prepare Fe 3 O 4 @SiO 2 @GdVO 4 :Dy 3+ core-shell microspheres with excellent magnetic and luminescence properties. The good aqueous colloidal stability, low toxicity and excellent self-heating efficacy make these novel magnetic, luminescent nanomaterials suitable for the hyperthermia treatment of cancer, and the luminescent entity helps us to identify the location of magnetic nanoparticles during in vitro cellular imaging [ 20 , 21 , 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Cytotoxicity of Novel Multifunctional Fe3O4@SiO2@GdVO4:Dy3+ Core-Shell Nanocomposite as a Drug Carrier

Zhao

Wang

2016

Materials

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In this study, multifunctional Fe3O4@SiO2@GdVO4:Dy3+ nanocomposites were successfully synthesized via a two-step method. Their structure, luminescence and magnetic properties were characterized by X-ray diffraction (XRD), scanning electronic microscope (SEM), transmission electron microscopy (TEM), photoluminescence (PL) spectra and vibrating sample magnetometer (VSM). The results indicated that the as-prepared multifunctional composites displayed a well-defined core-shell structure. The composites show spherical morphology with a size distribution of around 360 nm. Additionally, the composites exhibit high saturation magnetization (20.40 emu/g) and excellent luminescence properties. The inner Fe3O4 cores and the outer GdVO4:Dy3+ layers endow the composites with good responsive magnetic properties and strong fluorescent properties, which endow the nanoparticles with great potential applications in drug delivery, magnetic resonance imaging, and marking and separating of cells in vitro.

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The green upconversion emission mechanism investigation of GdVO4:Yb3+, Er3+ via tuning of the sensitizer concentration

Cited by 33 publications

References 27 publications

Generation of Pure Green Up-Conversion Luminescence in Er3+ Doped and Yb3+-Er3+ Co-Doped YVO4 Nanomaterials under 785 and 975 nm Excitation

Generation of Pure Green Up-Conversion Luminescence in Er3+ Doped and Yb3+-Er3+ Co-Doped YVO4 Nanomaterials under 785 and 975 nm Excitation

REVO₄‐Based Nanomaterials (RE = Y, La, Gd, and Lu) as Hosts for Yb³⁺/Ho³⁺, Yb³⁺/Er³⁺, and Yb³⁺/Tm³⁺ Ions: Structural and Up‐Conversion Luminescence Studies

Synthesis, Characterization and Cytotoxicity of Novel Multifunctional Fe3O4@SiO2@GdVO4:Dy3+ Core-Shell Nanocomposite as a Drug Carrier

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The green upconversion emission mechanism investigation of GdVO4:Yb3+, Er3+ via tuning of the sensitizer concentration

Cited by 33 publications

References 27 publications

Generation of Pure Green Up-Conversion Luminescence in Er3+ Doped and Yb3+-Er3+ Co-Doped YVO4 Nanomaterials under 785 and 975 nm Excitation

Generation of Pure Green Up-Conversion Luminescence in Er3+ Doped and Yb3+-Er3+ Co-Doped YVO4 Nanomaterials under 785 and 975 nm Excitation

REVO4‐Based Nanomaterials (RE = Y, La, Gd, and Lu) as Hosts for Yb3+/Ho3+, Yb3+/Er3+, and Yb3+/Tm3+ Ions: Structural and Up‐Conversion Luminescence Studies

Synthesis, Characterization and Cytotoxicity of Novel Multifunctional Fe3O4@SiO2@GdVO4:Dy3+ Core-Shell Nanocomposite as a Drug Carrier

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REVO₄‐Based Nanomaterials (RE = Y, La, Gd, and Lu) as Hosts for Yb³⁺/Ho³⁺, Yb³⁺/Er³⁺, and Yb³⁺/Tm³⁺ Ions: Structural and Up‐Conversion Luminescence Studies