The nature and mechanism of charging of electron traps in Lu2SiO5:Ce3+ crystals

Luminescence properties of Ce-doped oxyorthosilicate nanophosphors and single crystals

“…The emission and excitation bands of the nanophosphors presented a larger Stokes shift, which from a practical point of view leads to less selfabsorption, as already pointed out by other authors [43]. It should be pointed out that other authors have not observed differences in the crystal structure between bulk and nanocrystal LSO:Ce (with sizes down to clusters of 5 nm) prepared by the sol-gel method [33], which indicates a dependence of the nanocrystal structure with the synthesis method. The crystal structure of the LSO nanophosphors used in this study is confirmed by the XRD data shown in Fig.…”

“…In the case of LSO, analysis of the TL process led to the suggestion that the trapping centers related to these TL peaks are related to oxygen vacancies [32]. This conclusion is also supported by EPR measurements, at least in the case of the dominant TL peak at $430 K [31], although alternative models exist [33]. It has also been demonstrated for LSO that the strong afterglow observed at room temperature is related to the trapping center responsible for the 375 K TL peak [14].…”

Structure–Property Correlations in a Ce-Doped (Lu,Gd)2SiO5:Ce Scintillator

“…[16,17] and from 6 to 6.8 eV in LSO [18][19][20]. Since the conductance band edge in all the range of Lu 2x Gd 2-2x SiO 5 :Ce (0 < x < 1) crystals is formed by 5d wave functions of Lu 3+ and Gd 3+ and the valence band is formed by 2pO wave functions, one may assume an insignificant bangap change Low light yield, similar to GSO:Ce, is inherent to LGSO:Ce at Lu concentration <20 %, [14], for ex.…”

First photoconductivity measurement following photoionization of rare-earth dopant in a dielectric powder

“…Considering that the transport of electrons to the trapping centers has a diffusion character, Znamenskii et al [13]. estimated the diffusion coefficient D in crystalline LSO:Ce 3þ to be around 10 À3 cm 2 =s at room temperature.…”