Abstract Ce4+-doped Ca2SnO with a one-dimensional structure, which emits bright blue light, is prepared by using a solid-state reaction method. The x-ray diffraction results show that the Ce4+ ions doped in CaSnO occupy the Sn4+ sites. The excitation and emission spectra of CaSnCeO appear to have broad bands with peaks at 268 nm and 442 nm, respectively. A long excited-state lifetime ( 83 s) for the emission from CaSnCeO suggests that the luminescence originates from a ligand-to-metal Ce4+ charge transfer (CT). The luminescent properties of CaSnCeO have been compared with those of SrCeO, which is the only material reported so far to show Ce CT luminescence. More interestingly, it is observed that the emission intensity of CaSnCeO with a small doping concentration (x 0.03) is comparable to that of SrCeO in which the concentration of active centre is 100%.
(Amorphous materials; glasses and other disordered solids)
Fund: Project supported by the
Foundation of Shantou University (Grant No 934064) and the
Science and Technology Program of Shantou City, Guangdong
Province, China (Grant No 152011).
Cite this article:
Fu Shi-Liu(符史流), Yin Tao(尹涛), and Chai Fei(柴飞) Synthesis and characterization of Ca2Sn1-xCexO4 with blue luminescence originating from Ce4+ charge transfer transition 2007 Chinese Physics 16 3129
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
