Details

Autor(en) / Beteiligte

• Erfani Haghiri, Maryam
• Saion, Elias
• Soltani, Nayereh
• wan Abdullah, Wan Saffiey
• Navasery, Manizheh
• Hashim, Mansor

Titel

Thermoluminescence characteristics of copper activated calcium borate nanocrystals (CaB4O7:Cu)

Ist Teil von

• Journal of luminescence, 2013-09, Vol.141, p.177-183

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The copper activated calcium tetraborate (CaB4O7:Cu) nanophosphor was synthesized by a combination of facile co-precipitation and thermal treatment methods for the first time. Thermoluminescence and dosimetric characteristics of the gamma irradiated CaB4O7:Cu nanophosphor was reported. The glow curves shows two well resolved TL peaks centered at about 120°C and 260°C. The copper concentration was varied from 1 to 3mol% and it was found that the nanocrystalline CaB4O7:Cu with a dopant concentration of 2mol% has the highest sensitivity among the other dopant concentrations. The results demonstrated that copper can enhance TL efficiency to 2.26 times more than that of un-doped nanocrystalline samples. Moreover, the dose response of the dosimetric peak at 260°C follows a good linearity up to 3kGy whereas the linearity of lower temperature peak at 120°C extended up to 30Gy. The linearity characteristic of the present nanophosphor suggests it as a candidate towards dosimetric applications. •The TL characterization of calcium tetraborate nanoparticles was reported for the first time.•The addition of copper to host lattice can enhance the TL efficiency well.•The interesting feature of this study is a linearity of nanophosphor for wide range of doses.•The nanophosphor showed simple glow curve, good reproducibility and high sensitivity.