Facile synthesis and thermoluminescence properties of nano bio-ceramic \u03b2-Ca2P2O7:Dy phosphor irradiated with 75\xa0meV C6+ ion beam

Karan Kumar Gupta,Aleksander R Krupski,S J Dhoble

doi:10.1038/s41598-020-78365-4

Abstract

Dy3+ doped β-Ca2P2O7 phosphor has been synthesized using wet chemical method. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analysis confirmed the formation of β-Ca2P2O7:Dy nano-phosphors. However, photoluminescence (PL) study was carried out to confirm the presence of dopant ion in the host matrix of β-Ca2P2O7:Dy material. Thermoluminescence (TL) glow curves of β-Ca2P2O7 were recorded for different concentrations of Dy3+ after exposure to various fluences of C6+ ion beam (75 meV). TL sensitivity of β-Ca2P2O7:Dy3+ (0.1 mol%) phosphor was 3.79 times more than commercially available CaSO4:Dy3+. TRIM code based on the Monte Carlo simulation was used to calculate the absorbed doses, ion range and main energy loss. Glow curve de-convolution (GCD) method was used to determine the number of TL peaks and their trapping parameters. The wide linear response of β-Ca2P2O7 nanoparticles along with high stability of TL glow curve makes this nanomaterial a good candidate for C6+ ion beam dosimetry.

Highlights

Dy3+ doped β-Ca2P2O7 phosphor has been synthesized using wet chemical method
The remaining two calcium atoms like Ca1 and Ca2 are surrounded by eight oxygen and nine oxygen atoms forming bi-capped and tricapped trigonal prisms geometries, respectively
transmission electron microscopy (TEM) image reveals highly agglomerated non-uniform nanoparticles having average grain size of less than 30 nm which is comparable with the crystallite size predicted by scanning electron microscopy (SEM) data

Summary

Introduction

Dy3+ doped β-Ca2P2O7 phosphor has been synthesized using wet chemical method. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analysis confirmed the formation of β-Ca2P2O7:Dy nano-phosphors. We study the TL response of nanocrystalline β-Ca2P2O7:Dy phosphor irradiated by 75 meV C6+ ion beam in the fluence range of 2 × 1010 ions/cm[2] to 1 × 1012 ions/cm[2].

Results

Conclusion