Repozytorium
Wyszukaj
Kolekcje
Inne
Synthesis and luminescence properties of BaHfO3:Pr ceramics.
Autorzy
Rok wydania
2017
Czasopismo
Numer woluminu
189
Strony
148-152
DOI
10.1016/j.jlumin.2016.09.035
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
BaHfO3 sintered ceramic scintillators doped with various Pr concentrations (0-1mol%) were synthesized at 1700C in N2-H2 atmosphere. XRD, SEM and photo-luminescent techniques at various temperatures (40K to 550K) were employed to reveal properties of the BaHfO3:Pr ceramics. Results of spectroscopic investigation indicate that the luminescence is connected almost exclusively with decay of the ³P0 level, while the emission from ¹D2 is hardly seen even for higher Pr³⁺ concentrations. However, the intrinsic emission of BaHfO3 matrix, related with defects or impurities, seems to compete with the emission of Pr³⁺ ions. The ³P0 luminescence decays give time constant of about 25-32μs in the 40-550K range of temperatures, while the ¹D2 decay time depends on the dopant concentration and gets shorter above 300K for 1% specimen due to a cross relaxation process between Pr³⁺ ions.
Słowa kluczowe
Barium hafnate, Pr3 + luminescence, Time-resolved spectroscopy
Adres publiczny
http://dx.doi.org/10.1016/j.lumin.2016.09.035
Strona internetowa wydawcy
Podobne publikacje
Structural and spectroscopic properties of BaHfO3: Eu - the issue of the dopant location in the host lattice.
Dobrowolska Anna, Zych Eugeniusz
White colour emission from BaHfO3:Eu phosphor.
Dobrowolska Anna, Zych Eugeniusz
Electric-field-induced reorientation of a ferroelectric liquid crystal with a tolane ring, (S)-4-methylhexyl-4-[4-(decyloxy) phenylethynyl}-2-fluorobenzoate studied by time-resolved FT-IR.
Taniike K., Katayama N., Sato T., Ozaki Yukihiro, Czarnecki Mirosław A., Satoh M., Watanabe T., Yasuda A.