(*) Corresponding Author - e-mail: nkhalilzadeh@nrcam.org INTRODUCTION Int. J. Bio-Inorg. Hybr. Nanomater., 6(2): 65-70, Summer 2017 ABSTRACT: Introduction: The basic features of nanophosphors specifed by their structural state are propounded. New era in determination of absorbed dose is emphasized by using nanophosphor Lithium Tetraborate dosimeters. Objective: They can be used for measuring absorbed dose of ionizing radiations more effcient than known micro-scaled materials in medical, personal and environmental dosimetry. Methodology: Lithium carbonate reagent and boric acid were used as precursors. Poly vinyl pyrrolidone (PVP) was used as a capping agent to reduce the agglomeration of the particles. Besides, nitrate of copper (II) were used as dopants. Deionized water was used as the solvent. All materials which, utilized without any further purifcation, were purchased from Sigma Aldrich Company (United Kingdom) with purities more than 99.8% and used without further purifcation. Results and Discussion: The effect of a high concentration of surface trapping centers and grain size of particles on the nanophosphor luminescence characteristics is noted. These features determine some effective Thermoluminescence properties, which are essential for radiation detection. The luminescence and dosimetric properties of nanophosphors of different compositions are described. It is noted that the consequence nanophosphors show promise results in linearity as an advanced material for detecting effciently ionized radiation doses. Keywords: Absorbed dose; Detection; Dosimetry; Lithium tetraborate; Nanophosphor; Thermoluminescence; Thermal treatment Absorbed Dose measurement using nanomaterial N. Khalilzadeh Radiation Application Research School Alborz Research Complex, Moazen Blvd. Karaj, Nuclear Science and Technology Research Institute Received: 8 April 2017; Accepted: 25 May 2017 Ever since (Daniels, et al., 1953) reported for the frst time on the Thermoluminescence (TL) as a technique in radiation dosimetry the TL has attracted tremendous attention in science, industry and medicine, where ionizing radiation is used for radiation dose monitor- ing. They showed that the irradiated material contains stored energy, which could be released thermally. Dan- iels frstly introduced LiF as a good dosimeter, due to its high sensitivity, and small pellets. LiF was applied to measure internal doses at the Hospital of Oak Ridge Institute of Nuclear studies by cancer patients (Daniels, et al., 1953). Later, it was applied to determine radiation following an atomic weapon test by (Cameron, Sunth- aralingam, and Kenney, 1968). Cameron and his col- leagues (1960s) introduced that the presence of impuri- ties could improve the effciency of LiF. The intensity of LiF was improved in the presence of impurities. Due to enormous intensifcation of attempts and a massive literature that now exists on radiation dosimetry (more