Upconversion emission of ZrO2 nanoparticles doped with erbium (Er3+) and ytterbium (Yb3+), synthesized by hydrothermal route

Jasso, G. Torres; Montes, Emilio Fontela; Olguín, J.C. Guzmán; Guzmán, Daniel Sánchez; Esquivel, R.I. López; Martı́n, I.R.; Mendoza, José Guzmán

doi:10.1016/j.ceramint.2017.09.152

Cited by 20 publications

(5 citation statements)

References 18 publications

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“…Similar profiles with the same peak positions of green and red emissions are observed when comparing the powder phase and the deposited film, indicating that basic optical behaviour of the upconversion nanoparticles has not been changed and that is further confirmed by the presence of the same structure (anatase phase) and elementary size. Many factors are responsible for the changing of the red / green ratio for Er 3+ doped upconversion materials, such as site symmetry, coordination number, interatomic distance, shaping material [65][66][67][68]. Meanwhile, the change in intensity could be related to the change of the environment when particles are connected to n-type (100) Si surface.…”

Section: Up-conversion Emission Of Nanoparticles and Thin Filmmentioning

confidence: 99%

Synthesis of upconversion TiO2:Er3+-Yb3+ nanoparticles and deposition of thin films by spin coating technique

Trabelsi

Mercier

Blanquet

et al. 2020

Ceramics International

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In this work, a simple, low temperature (T<300°C) procedure suitable to increase the efficiency of solar cell and optoelectronic devices through reducing the mismatch with solar spectrum in the infrared range is proposed. TiO 2 co-doped with rare earth ions is a promising candidate for its use in optical field due to the possibility to expand the spectral absorption range. Here, pure and Er 3+ -Yb 3+ co-doped anatase-TiO 2 nano-spherical particles (diameter < 50 nm) with high surface area (125.7 m 2 /g and 140.6 m 2 /g for the pure and co-doped, respectively), good crystallinity are prepared by hydrothermal-assisted sol-gel method, followed by their dispersion and deposition as thin films. The nanoparticles are characterized by studying their structural, morphology, surface chemical compositions and photoluminescent properties. From the dispersion study, results showed that the optimal conditions were obtained for co-doped TiO 2 at operational pH=3 and with 20 min as a suitable duration of ultrasonication. The co-doped TiO 2 nanoparticles showed excellent upconversion properties (green and red emissions) at room temperature under 980 nm excitation. To extend this result towards optoelectronic and photonic applications, the upconversion nanoparticles are deposited at the surface of n-type (100) Si wafer using a spincoating process. From scanning electron microscopy, it is observed that the entire surface of substrate is covered with a uniform film composed of compact arrangement of small nanoparticles with a good adhesion on Si surface, also the resulting 750 nm thick TiO 2 :Er-Yb film maintained the upconversion luminescence phenomena.

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Section: Up-conversion Emission Of Nanoparticles and Thin Filmmentioning

confidence: 99%

Synthesis of upconversion TiO2:Er3+-Yb3+ nanoparticles and deposition of thin films by spin coating technique

Trabelsi

Mercier

Blanquet

et al. 2020

Ceramics International

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“…Two ways have been proposed by which host matrix can affect the upconversion efficiency; i) local crystal field and ii) the phonon dynamics . The host materials investigated include Lu 2 O 3 , ZrO 2 , NaYF 4 , YVO 4 , LuPO 4 and YbPO 4 , LaF 3 , GdOCl, and NaGdF 4 . Among them, fluoride‐based materials such as NaYF 4 , YF 4 , and NaGdF 4 are mainly popular .…”

Section: Structure Properties and Upconversion Mechanismmentioning

confidence: 99%

Recent Advancements in Ln‐Ion‐Based Upconverting Nanomaterials and Their Biological Applications

Chhetri

Karmakar²,

Ghosh

2019

Part & Part Syst Charact

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Upconversion nanoparticles (UCNPs) convert low‐energy infrared (IR) or near‐infrared (NIR) photons into high‐energy emission radiation ranging from ultraviolet to visible through a photon upconversion process. In comparison to conventional fluorophores, such as organic dyes or semiconductor quantum dots, lanthanide‐ion‐doped UCNPs exhibit high photostability, no photoblinking, no photobleaching, low cytotoxicity, sharp emission lines, and long luminescent lifetimes. Additionally, the use of IR or NIR for excitation in such UCNPs reduces the autofluorescence background and enables deeper penetration into biological samples due to reduced light scattering with negligible damage to the samples. Because of these attributes, UCNPs have found numerous potential applications in biological and medicinal fields as novel fluorescent materials. Different upconversion mechanisms commonly observed in UCNPs, various methods that are used in their synthesis, and surface modification processes are discussed. Recent applications of Ln‐UCNPs in the biological and medicinal fields, including in vivo and in vitro biological imaging, multimodal imaging, photodynamic therapy, drug delivery, and antibacterial activity, are also presented.

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“…Among all these, rare-earth compounds doped with ZrO 2 are widespread. [46] Depending on the synthesis method and its different conditions, the ZrO 2 can exist in tetragonal, monoclinic and cubic crystal structures. [47][48][49][50][51] ZrO 2 has exceptional chemical and physical properties including optical transparency, high chemical and mechanical stability, [52] etc.…”

Section: Introductionmentioning

confidence: 99%

“…The chemical and physical properties of rare‐earth oxide materials make them potential candidates for a luminescent host matrix. Among all these, rare‐earth compounds doped with ZrO 2 are widespread [46] . Depending on the synthesis method and its different conditions, the ZrO 2 can exist in tetragonal, monoclinic and cubic crystal structures [47–51] .…”

Section: Introductionmentioning

confidence: 99%

Voltage‐ and Power‐Conversion Performance of Bi‐functional ZrO₂ : Er³⁺/ Yb³⁺ Assisted and Co‐sensitized Dye Sensitized Solar Cells for Internet of Things Applications

Meenakshamma,

Mounika,

Gurulakshmi

et al. 2023

ChemPhysChem

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The giant power conversion efficiency is achieved by using bifunction ZrO2:Er3+ /Yb3+assisted co‐sensitised dye sensitized solar cells. The evolution of crystalline structure, its microstructure is examined through X‐ray diffraction, scanning electron microscopy studies. The bi‐functional behaviour of ZrO2:Er3+/Yb3+ as upconversion, light scattering is confirmed by emission and diffused reflectance studies. The bi‐function ZrO2:Er3+/Yb3+ (pH=3) assisted photoanode is co‐sensitized by use of N719 dye, squaraine SPSQ2 dye and is sandwiched with Platinum based counter electrode. The fabricated DSSC exhibited a giant power conversion efficiency of 12.35% with VOC of 0.71 V, JSC of 27.06 mA/cm2, FF of 0.63. The results, which motivated the development of a small DSSC module, gave 6.21% and is used to drive a tiny electronic motor in indoor and outdoor lighting conditions. Small‐area DSSCs connected in series have found that a VOC of 4.52 V is sufficient to power up Internet of Things (IoT) devices.

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Upconversion emission of ZrO2 nanoparticles doped with erbium (Er3+) and ytterbium (Yb3+), synthesized by hydrothermal route

Cited by 20 publications

References 18 publications

Synthesis of upconversion TiO2:Er3+-Yb3+ nanoparticles and deposition of thin films by spin coating technique

Synthesis of upconversion TiO2:Er3+-Yb3+ nanoparticles and deposition of thin films by spin coating technique

Recent Advancements in Ln‐Ion‐Based Upconverting Nanomaterials and Their Biological Applications

Voltage‐ and Power‐Conversion Performance of Bi‐functional ZrO₂ : Er³⁺/ Yb³⁺ Assisted and Co‐sensitized Dye Sensitized Solar Cells for Internet of Things Applications

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Upconversion emission of ZrO2 nanoparticles doped with erbium (Er3+) and ytterbium (Yb3+), synthesized by hydrothermal route

Cited by 20 publications

References 18 publications

Synthesis of upconversion TiO2:Er3+-Yb3+ nanoparticles and deposition of thin films by spin coating technique

Synthesis of upconversion TiO2:Er3+-Yb3+ nanoparticles and deposition of thin films by spin coating technique

Recent Advancements in Ln‐Ion‐Based Upconverting Nanomaterials and Their Biological Applications

Voltage‐ and Power‐Conversion Performance of Bi‐functional ZrO2 : Er3+/ Yb3+ Assisted and Co‐sensitized Dye Sensitized Solar Cells for Internet of Things Applications

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Product

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Voltage‐ and Power‐Conversion Performance of Bi‐functional ZrO₂ : Er³⁺/ Yb³⁺ Assisted and Co‐sensitized Dye Sensitized Solar Cells for Internet of Things Applications