The effect of addition of PTFE or urea on luminescence response of copper-doped lithium tetraborate

Iskandar, Ferry and Fajri, Annisa and Nuraeni, Nunung and Stavila, Erythrina and Aimon, Akfiny H and Nuryadin, Bebeh Wahid (2018) The effect of addition of PTFE or urea on luminescence response of copper-doped lithium tetraborate. Material Research Express, 5 (4). p. 44003. ISSN 2053-1591

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Abstract

Lithium tetraborate (Li2B4O7) is a promising material for application in personal dosimetry due to its tissue equivalent properties. The addition of copper as a dopant in Li2B4O7 is known to increase the sensitivity for both photoluminescent (PL) and thermoluminescent (TL) emission. Therefore, in this paper, synthesis of Li2B4O7:Cu is reported. The optimum synthesis condition was achieved using the solution-assisted method, followed by calcination at 700 °C for 2 h. The addition of 0.1 wt% Cu resulted in the highest PL and TL emissions. Further investigation of the influence of polytetrafluoroethylene (PTFE) or urea addition on the luminescence response of Li2B4O7:Cu is described. All samples were characterized by x-ray diffraction (XRD), attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectrometry, photoluminescence spectrofluorophotometer, thermoluminescence reader, scanning electron microscopy (SEM), and energy dispersive x-ray (EDX) spectroscopy. The addition of PTFE decreased the PL emission of the Li2B4O7:Cu butslightly increased its TL emission. Meanwhile, the addition of urea increased the luminescence emission for both PL and TL of the Li2B4O7:Cu.

Item Type:	Article
Uncontrolled Keywords:	lithium tetraborate; TLD; thermoluminescence; photoluminescence; urea; PTFE
Subjects:	Light, Infrared and Ultraviolet Phenomena Modern Physics Metallurgy
Divisions:	Fakultas Sains dan Teknologi > Program Studi Fisika
Depositing User:	Dr. Bebeh Wahid Nuryadin
Date Deposited:	09 May 2019 01:43
Last Modified:	09 May 2019 01:49
URI:	https://etheses.uinsgd.ac.id/id/eprint/20182

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