Repozytorium
Wyszukaj
Kolekcje
Inne
On thermoluminescence of Lu2O3:Tb,Ta ceramic storage phosphors.
Autorzy
Rok wydania
2017
Czasopismo
Numer woluminu
189
Strony
153-158
DOI
10.1016/j.jlumin.2017.04.013
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
For thefirst time thermoluminescence of Lu2O3:Tb,Ta ceramics sintered at 1700 °C in different atmospheres–air, forming gas and vacuum–were investigated. Exposure of the materials into the 254 nm radiation of amercury lamp led to the Tb3+green persistent luminescence of noticeable intensity. Thermoluminescence glowcurves revealed two strong thermoluminescence peaks located around 170 °C and 250 °C, with the former beingby a factor of ~2–2.5 more intense compared to the latter. Tmax-Tstopthermoluminescence experiments revealedthat each of these bands is composed of numerous individual, strongly overlapping components of similarcharacteristics, known as continuous traps distribution. The highest thermoluminescence was observed from thematerial sintered in vacuum. Those sintered in air or forming gas showed the storage capabilities by about15–25% lower, though shapes of their glow curves were very similar. A scheme of carriers trapping wasproposed with the hole immobilized at Tb3+site and the electron being trapped in the vicinity Ta(V) impuritydue to its strong positive net charge in the Lu site.
Adres publiczny
http://dx.doi.org/10.1016/j.jlumin.2017.04.013
Strona internetowa wydawcy
Podobne publikacje
Energy recovery from Lu2O3: Tb, Hf ceramic storage phosphors.
Zych Eugeniusz, Kulesza Dagmara
On site-selective optically and thermally induced processes in Lu2O3:Tb,Ta storage phosphors.
Bolek Paulina, Kulesza Dagmara, Zych Eugeniusz
On thermoluminescence mechanism and energy leakage in Lu2O3:Tb,V storage phosphor.
Zeler Justyna, Bolek Paulina, Kulesza Dagmara, Zych Eugeniusz