Luminescence Properties Of Pure CaSO4 Nanoparticles Produced By Co- Precipitation Method

Mehrabi, M.; Zahedifar, M.; Sadeghi, E.

doi:10.7508/jns.2014.04.004

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Luminescence Properties Of Pure CaSO4 Nanoparticles Produced By Co- Precipitation Method

Article 4, Volume 4, Issue 4, Autumn 2014, Page 425-431 PDF (432 K)

Document Type: Research Paper

DOI: 10.7508/jns.2014.04.004

Authors

M. Mehrabi¹; M. Zahedifar

¹^{, 2}; E. Sadeghi¹^{, 2}

¹Institute of Nano Science and Nano Technology, University of Kashan, Kashan, P. O. Box. 87317–51167, Iran

²Faculty of Physics, University of Kashan, Kashan, P. O. Box. 87317–51167, Iran

Abstract

Thermoluminecsence (TL) characteristics of pure CaSO4 nanoparticles produced by co-precipitation method are presented. The formation of the nanoparticles was confirmed by X-ray diffraction (XRD) and scanning electron microscope (SEM). TL glow curve of this phosphor, exposed to gamma radiation exhibits five overlapping glow peaks in the complex glow curve at 463, 470, 483, 498 and521(K) respectively, using a computerized glow curve deconvolution procedure. A photoluminescence (PL) emission band at 393 nm was observed for the synthesized nanoparticles. Different synthesis conditions were examined in order to achieve highest TL sensitivity. The produced nanoparticles exhibit superior thermoluminescent sensitivity compared to that of its bulk equivalent.

Keywords

Co-precipitation; Nanoparticles; Photoluminescence; Thermoluminescence

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