Sonochemical Synthesis of Er<sup>3+</sup>‐Doped ZnO Nanospheres with Enhanced Upconversion Photoluminescence

Geng, Jianhua; Song, Guanghui; Zhu, Jun‐Jie

doi:10.1155/2012/317857

Cited by 11 publications

(4 citation statements)

References 31 publications

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“…Presently, the sonochemical method is a simple, uncomplicated, non-toxic, and most effective method for synthesizing a variety of nanostructure materials under ambient conditions [97][98][99][100]. The effect of acoustic cavitation-initiated ultrasound irradiation of high intensity has received immense attention [101]. The sonochemical preparation of Ln 3+ doped CeF 3 nanostructures (>10 nm) from precursor aqueous solutions of rare-earth ions and different sources (KBF 4 , NH 4 F, NaF) have been investigated.…”

Section: Sonochemical Methodsmentioning

confidence: 99%

Upconversion lanthanide nanomaterials: basics introduction, synthesis approaches, mechanism and application in photodetector and photovoltaic devices

Mehrdel¹,

Nikbakht²,

Aziz³

et al. 2021

Nanotechnology

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Upconversion (UC) of lanthanide-doped nanostructure has the unique ability to convert low energy infrared (IR) light to high energy photons, which has significant potential for energy conversion applications. This review concisely discusses the basic concepts and fundamental theories of lanthanide nanostructures, synthesis techniques, and enhancement methods of upconversion for photovoltaic and for near-infrared (NIR) photodetector (PD) application. In addition, a few examples of lanthanide-doped nanostructures with improved performance were discussed, with particular emphasis on upconversion emission enhancement using coupling plasmon. The use of UC materials has been shown to significantly improve the NIR light-harvesting properties of photovoltaic devices and photocatalytic materials. However, the inefficiency of UC emission also prompted the need for additional modification of the optical properties of UC material. This improvement entailed the proper selection of the host matrix and optimization of the sensitizer and activator concentrations, followed by subjecting the UC material to surface-passivation, plasmonic enhancement, or doping. As expected, improving the optical properties of UC materials can lead to enhanced efficiency of PDs and photovoltaic devices.

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Section: Sonochemical Methodsmentioning

confidence: 99%

Upconversion lanthanide nanomaterials: basics introduction, synthesis approaches, mechanism and application in photodetector and photovoltaic devices

Mehrdel¹,

Nikbakht²,

Aziz³

et al. 2021

Nanotechnology

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“…The luminescence intensity is greater for Erbium doped zinc oxide then the pure zinc oxide. The shape of nanoparticles is spherical and the Erbium is incorporated inside the ZnO grains 64 .…”

Section: Bimetallic Nanoparticlesmentioning

confidence: 99%

Role of Ultrasound in the Synthesis of Nanoparticles and Remediation of Environmental Pollutants

Srivastava

Pankaj

Sahu

et al. 2018

Materials Research Foundations

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The present review briefly discusses two important aspects of the application of power ultrasound. Firstly, the application of ultrasound in the synthesis of nanoparticles, using various state-of-the-art sonochemical methods for the synthesis of nanoparticles of metals of s-, p-, d-and f-blocks and their compounds using ultrasound alone or in combination with other techniques. The advantage of using ultrasound lies in controlling the size, morphology and physical state (amorphous / crystalline) of nanoparticles through the variation in frequency, power and duration of sonication. Secondly, the use of ultrasound in the remediation of pollutants in aqueous effluents, such as, metal ions, organic acids, dyes, pesticides, pharmaceuticals, preservatives etc., has been discussed. Ultrasound is undoubtedly a very promising futuristic tool for both these technologies.

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“…Zinc oxide (ZnO), one of the semiconductor compounds in the II–VI group, has been extensively used in solar cells, sensors, ultraviolet optoelectronic fields, and many other technological applications. − As an inorganic semiconductor, ZnO possesses numerous sought-after properties such as high transparency in the visible wavelengths, strong luminescence at room temperature, a large exciton binding energy of 60 meV, fast response after excitation, high radiation resistance, and reasonable stability. Furthermore, ZnO approximately maintains the same emission bands whether doped or undoped. − The optical and electrical properties of ZnO change by doping with transition metals (TMs) or rare-earth elements (REEs). Rare-earth elements such as Eu, Yb, Er, and Gd have multi-sub-state, temperature-independent luminescence that spans the ultraviolet, visible light and near-IR ranges, and plenty of energy levels.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Photoluminescence Spectra for Doped ZnO Using Neutron Irradiation

Zeidan

Abedrabbo

2023

ACS Omega

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This study investigates the effect of neutron irradiation on zinc oxide (ZnO) crystal bulk substrates that have been ion-implanted with gadolinium (Gd) and iron (Fe) in different concentrations in the Zn-polar (0001) face of the crystal to produce Gd:ZnO and Fe:ZnO crystal bulk samples. The neutron beams of the 241Am–Be flux were moderated to be 7 × 104 n/s cm2 by a 4.5 cm-thick wax. The implanted face was left to face the neutron beams on top of the wax for 90 h. The results show that the nuclear reaction between thermal neutrons and the implanted material produced a large amount of heat, which significantly enhanced the photoluminescence spectra of the crystal bulk surface after the surface damage caused by ion implantation. This study provides insights into the benefits of having a doped material in the ZnO crystal after irradiation and highlights the potential of neutron irradiation as a method for enhancing the properties of implanted crystal bulk substrates.

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Sonochemical Synthesis of Er³⁺‐Doped ZnO Nanospheres with Enhanced Upconversion Photoluminescence

Cited by 11 publications

References 31 publications

Upconversion lanthanide nanomaterials: basics introduction, synthesis approaches, mechanism and application in photodetector and photovoltaic devices

Upconversion lanthanide nanomaterials: basics introduction, synthesis approaches, mechanism and application in photodetector and photovoltaic devices

Role of Ultrasound in the Synthesis of Nanoparticles and Remediation of Environmental Pollutants

Enhancing Photoluminescence Spectra for Doped ZnO Using Neutron Irradiation

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Sonochemical Synthesis of Er3+‐Doped ZnO Nanospheres with Enhanced Upconversion Photoluminescence

Cited by 11 publications

References 31 publications

Upconversion lanthanide nanomaterials: basics introduction, synthesis approaches, mechanism and application in photodetector and photovoltaic devices

Upconversion lanthanide nanomaterials: basics introduction, synthesis approaches, mechanism and application in photodetector and photovoltaic devices

Role of Ultrasound in the Synthesis of Nanoparticles and Remediation of Environmental Pollutants

Enhancing Photoluminescence Spectra for Doped ZnO Using Neutron Irradiation

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Sonochemical Synthesis of Er³⁺‐Doped ZnO Nanospheres with Enhanced Upconversion Photoluminescence