S&M Young Researcher Paper Award 2020
Recipients: Ding Jiao, Zao Ni, Jiachou Wang, and Xinxin Li [Winner's comments]
Paper: High Fill Factor Array of Piezoelectric Micromachined
Ultrasonic Transducers with Large Quality Factor

S&M Young Researcher Paper Award 2021
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Notice of retraction
Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
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S&M2603 Research Paper of Special Issue

Ag Concentration Dependence of Build-up Effect of Radio-photoluminescence in Ag-doped P2O5–Al2O3–Na2O–SiO2 Glasses

Takumi Kato, Daiki Shiratori, Masaru Iwao, Hironori Takase, Daisuke Nakauchi, Noriaki Kawaguchi, and Takayuki Yanagida

(Received January 28, 2021; Accepted May 10, 2021)

Keywords: build-up, radio-photoluminescence, silver, glass

In this paper, we evaluated the Ag concentration dependence of the build-up effect of radio-photoluminescence (RPL) in Ag-doped P2O5–Al2O3–Na2O–SiO2 (PANS) glasses. After X-ray irradiation, the Ag-doped PANS glasses showed two emission peaks at around 460 and 630 nm, assigned to blue and orange RPL components, respectively. The build-up curves of the orange RPL component had two components corresponding to the formation of the 〖"Ag" 〗_"2" ^"+" dimer and Ag2+ ions. The intensity of the component due to the 〖"Ag" 〗_"2" ^"+" dimer increased with increasing Ag concentration, whereas that of the component due to Ag2+ ions decreased. It is assumed that at a high Ag concentration, the Ag+ ions have a higher probability of diffusing to Ag0 sites to form the 〖"Ag" 〗_"2" ^"+" dimer because the average distance between neighboring Ag in the glass structure decreases with increasing Ag concentration. Therefore, the intensity of the component due to the 〖"Ag" 〗_"2" ^"+" dimer was dominant at a high concentration of Ag in the glass structure.

Corresponding author: Takumi Kato

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