The harmful effects of sintering aids in Pr:LuAG optical ceramic scintillator

0379840 - FZÚ 2013 RIV US eng J - Článek v odborném periodiku
Shen, Y. - Shi, Y. - Feng, X. - Pan, Y. - Li, J. - Zeng, J.-Y. - Nikl, Martin - Krasnikov, A. - Vedda, A. - Moretti, F.
The harmful effects of sintering aids in Pr:LuAG optical ceramic scintillator.
Journal of the American Ceramic Society. Roč. 95, č. 7 (2012), s. 2130-2132. ISSN 0002-7820. E-ISSN 1551-2916
Grant CEP: GA MŠMT LH12185
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: scintillator * optical ceramics * sintering aids * luminescence
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 2.107, rok: 2012

We investigate scintillation properties and energy trapping processes in Pr-doped Lu3Al5O12 (Pr:LuAG) optical ceramics, specifically focusing on the effects of sintering aids. Ceramics with good transmittance and scintillation properties comparable with those of single crystals were obtained without the use of sintering aids. Their introduction caused a transparency improvement, accompanied, however, by a deterioration of scintillation properties in terms of light yield and time decay. We interpret the results discussing the role of aliovalent sintering agents on the formation of point defects acting as traps affecting the transport of charge carriers to the luminescence centers.
Trvalý link: http://hdl.handle.net/11104/0210707