Abstract
In this work we show the influence of material preparation technology on the thermoluminescent properties of single crystalline films (SCFs) of Ce3+-doped Lu2SiO5 (LSO) and Y2SiO5 (YSO) orthosilicates. LSO:Ce and YSO:Ce SCFs were grown by the liquid phase epitaxy method from two different melt-solutions based on PbO-B2O3 and Bi2O3 fluxes. Absorption, cathodoluminescence, and thermoluminescent properties of LSO:Ce and YSO:Ce SCFs grown from the two previously mentioned types of fluxes were compared, and results of spectrally resolved thermoluminescence measurements and thermoluminescent glow curves of SCFs recorded in different spectral ranges were presented. We have found that the observed differences in thermoluminescent properties of the SCFs under study can be caused by the domination of Ce4+ and Pb2+ emission centers in LSO:Ce and YSO:Ce SCFs grown using PbO-B2O3 flux, and Ce3+ and Bi3+ emission centers in the SCFs grown from Bi2O3 flux.
Highlights
Lutetium (Lu2 SiO5, LSO) and yttrium (Y2 SiO5, YSO) orthosilicates are related to the well-known scintillation materials [1]
Ce3+ -doped LSO and YSO single crystalline films (SCFs) grown by the liquid phase epitaxy (LPE) method from PbO-B2 O3 flux
We have shown that the LSO:Ce and YSO:Ce SCFs exhibit unexpected strong thermoluminescent signal above room temperature (RT) [11,12,13]
Summary
Lutetium (Lu2 SiO5 , LSO) and yttrium (Y2 SiO5 , YSO) orthosilicates are related to the well-known scintillation materials [1]. During the last few years, Tb3+ , Ce3+ , and Ce3+ -Tb3+ single crystalline films (SCFs) of LSO and YSO orthosilicates were developed using the liquid phase epitaxy (LPE) method [4,5,6,7,8] for application as scintillating screens in microimaging detectors with special resolution even in the submicron range [9,10]. We have shown that the LSO:Ce and YSO:Ce SCFs exhibit unexpected strong thermoluminescent signal above room temperature (RT) [11,12,13]. Such promising results led us to further research in this subject. It is interesting to determine the nature of trapping centers in Ce3+ -doped LSO and YSO SCFs, responsible for such strong thermoluminescence taking into account the absence of substitution-type defects and expected very low concentration of oxygen vacancies in these SCFs due to the very low temperature of their preparation by the LPE method in oxygen-containing atmosphere (air)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
