Effects of the Solution Formulation on the Electrochemical Growth of the ZnO Vertical Nanowires

Wakazuki, Sachiko; Ohara, Hikaru; Khoo, Pei Loon; Nakanishi, Azusa; Kobayashi, Masakazu; Jun-ichi, Shinozaki; Izaki, Masanobu

doi:10.4139/sfj.72.50

Cited by 1 publication

(2 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…15 The width and length of the ZnO-vnws were controlled by adjusting the total Zn and Cl concentration. 16 Figure 4 shows the optical absorption spectra of the SrGa 2 S 4 :Eu /ZnO-vnws bilayer and the SrGa 2 S 4 :Eu layer, the emission and excitation spectra, and the decay curve for the bilayer. The SrGa 2 S 4 :Eu layer did not show a clear absorption edge at wavelengths ranging from 400 to 800 nm, although a slight change was observed around 500 nm.…”

Section: Resultsmentioning

confidence: 99%

“…The <001>-oriented ZnOvnws can be prepared by electrochemical reactions, [13][14][15] and the morphology of the length and width can be controlled by the solution formulation, and concentration of Cl impurity, which act as a donor in a ZnO semiconductor. 16 With the incorporation of ZnOvnws with its light-guiding effect with powder phosphor, the scintillator performance can be expected to be improved.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Electrochemically Fabricated SrGa₂S₄:Eu/ZnO-Vertical Nanowire Bilayer Scintillator for X-ray Imaging

Ohara

Wakazuki

Khoo

et al. 2022

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

Scintillators, which convert high-energy rays such as X-rays and positrons into visible and ultraviolet light, are incorporated as radiation detectors in X-ray computer tomography (X-ray CT) and positron emission tomography (PET), in which system performance highly depends on the characteristics of the scintillator used. In this study, SrGa2S4:Eu/ZnO vertical nanowire (ZnO-vnw) bilayer scintillators were fabricated by electrodeposition of ZnO-vnw followed by electrophoresis deposition of SrGa2S4:Eu particles, and their structure, optical properties, and scintillator characteristics were evaluated. The ZnO-vnw were composed of vertically aligned ZnO nanowires with an excellent (001) out-of-plane orientation, and the SrGa2S4:Eu layer was composed of particles adhered to the ZnO-vnw. The SrGa2S4:Eu/ZnO-vnw bilayer scintillators emitted visible light at a wavelength of 533 nm with a lifetime of 0.389 s and functioned as a scintillator for X-ray irradiation. The resolution and luminescence intensity of the SrGa2S4:Eu/ZnO-vnw bilayer scintillators were improved by the introduction of the ZnO-vnw layer, when compared with those of the ZnO-vnw-free-SrGa2S4:Eu layer, when the thickness ratio of SrGa2S4:Eu layer to ZnO-nw length were 1.1~1.3. The SrGa2S4:Eu/ZnO-vnw bilayer scintillator revealed a spatial resolution of 6.8 μm, which was slightly larger than 5.4 μm of a ready-made LuAG single-crystal scintillator.

show abstract

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Electrochemically Fabricated SrGa₂S₄:Eu/ZnO-Vertical Nanowire Bilayer Scintillator for X-ray Imaging

Ohara

Wakazuki

Khoo

et al. 2022

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

show abstract

Effects of the Solution Formulation on the Electrochemical Growth of the ZnO Vertical Nanowires

Cited by 1 publication

References 22 publications

Electrochemically Fabricated SrGa₂S₄:Eu/ZnO-Vertical Nanowire Bilayer Scintillator for X-ray Imaging

Electrochemically Fabricated SrGa₂S₄:Eu/ZnO-Vertical Nanowire Bilayer Scintillator for X-ray Imaging

Contact Info

Product

Resources

About

Effects of the Solution Formulation on the Electrochemical Growth of the ZnO Vertical Nanowires

Cited by 1 publication

References 22 publications

Electrochemically Fabricated SrGa2S4:Eu/ZnO-Vertical Nanowire Bilayer Scintillator for X-ray Imaging

Electrochemically Fabricated SrGa2S4:Eu/ZnO-Vertical Nanowire Bilayer Scintillator for X-ray Imaging

Contact Info

Product

Resources

About

Electrochemically Fabricated SrGa₂S₄:Eu/ZnO-Vertical Nanowire Bilayer Scintillator for X-ray Imaging

Electrochemically Fabricated SrGa₂S₄:Eu/ZnO-Vertical Nanowire Bilayer Scintillator for X-ray Imaging