Development of flexible scintillation sensors based on Ag and Gd doped CdWO4 nanocomposites

Nooshin Heydarian Dehkordi; Morteza Raeisi; Sanaz Alamdari

doi:10.1016/j.apradiso.2022.110457

Development of flexible scintillation sensors based on Ag and Gd doped CdWO₄ nanocomposites

Appl Radiat Isot. 2022 Nov:189:110457. doi: 10.1016/j.apradiso.2022.110457. Epub 2022 Sep 15.

Authors

Nooshin Heydarian Dehkordi¹, Morteza Raeisi², Sanaz Alamdari³

Affiliations

¹ Department of Nanotechnology, Faculty of New Sciences and Technologies, Semnan University, Semnan, Iran.
² Department of Physics, Shahrekord University, Shahrekord, Iran; Nanotechnology Research Institute, Shahrekord University, Shahrekord, Iran. Electronic address: raeisi.morteza@sci.sku.ac.ir.
³ Faculty of Physics, Semnan University, P.O. Box: 35195-363, Semnan, Iran.

PMID: 36137480
DOI: 10.1016/j.apradiso.2022.110457

Abstract

In this work, CdWO₄ (CWO), CWO: Ag, and CWO: Gd nanoparticles (NPs) were synthesized by a simple method. Incorporation of the prepared NPs in a polymeric matrix (Polyester) developed a highly luminescent and ionizing ray nanocomposite sensor. Results from XRD, XPS, FE-SEM and EDAX, verified the successful synthesize of pure and doped CWO nanoparticles with the mean size of approximately 50-70 nm. The luminescence properties of the synthesized NPs were examined under UV and ion-beam excitation. CWO: Ag nanoparticles exhibited the most intense emission in the blue-green range compared to the CWO and CWO: Gd samples. The scintillation response of the prepared composite films against alpha irradiation (²⁴¹Am source) was studied. The highest absolute efficiency (ε) was obtained for CWO: Ag composite film (58.18%) which has promising applications in flexible and transparent optical detectors.

Keywords: CdWO(4) nanoparticles; composite film; doped CWO; luminescence; scintillation.

MeSH terms

Luminescence
Metal Nanoparticles*
Nanocomposites*
Polyesters
Silver

Substances

Polyesters
Silver