NDLI: Splitting and broadening of the emission bands of Y$_{2}$O$_{3}$:Eu$^{3+}$,Nd$^{3+}$ and its dependence on Nd$^{3+}$ concentration and annealing temperature

Content Provider	Springer Nature Link
Author	Liu, Wangdong Wang, Hanchao Zhan, Shiping Li, Wenbin
Copyright Year	2011
Abstract	Although Eu$^{3+}$ ion-doped Y$_{2}$O$_{3}$ has been extensively used as red phosphors, their color rendering needs to be improved for high-quality illumination and displaying. Here, we show that the emission spectra of Y$_{2}$O$_{3}$:Eu$^{3+}$ red phosphors can be broadened by the doping of Nd$^{3+}$ ion so that the color rendering capability of Y$_{2}$O$_{3}$:Eu$^{3+}$ was remarkably enhanced. Y$_{2}$O$_{3}$:Eu$^{3+}$ and Y$_{2}$O$_{3}$:Eu$^{3+}$,Nd$^{3+}$ colloidal spheres were synthesized by wet chemical procedure and high-temperature treatment. The fluorescence measurement under the 254 and 380 nm ultraviolet excitation indicates that the 612 nm red emission peak of Eu$^{3+}$ can be splitted into two ones by the doping of Nd$^{3+}$ ion, of which the full width at half maximum (FWHM) is broadened from 4.2 nm to 9.6 nm. By varying the concentration of Nd$^{3+}$ ion, it was determined that the optimal doping concentration of Nd$^{3+}$ ion is of 3 mol% for realizing the strongest emission intensity. The further increase of Nd$^{3+}$ ion exceeding 3 mol% would lead to a concentration quenching phenomenon. The analysis based on XRD spectra and the simplified energy diagram suggested that the doped Nd$^{3+}$ ion not only monitored the growth dynamics, but also took an efficient energy transfer and a cross relaxation process to generate intense emission from Eu$^{3+}$ ion in both of C$_{2}$ and S$_{6}$ sites, instead of preferable one type of Eu$^{3+}$ site (C$_{2}$ or S$_{6}$) in the Nd$^{3+}$ undoped sample.
Starting Page	7620
Ending Page	7625
Page Count	6
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	46
Issue Number	23
e-ISSN	15734803
Language	English
Publisher	Springer US
Publisher Date	2011-06-29
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mechanics Crystallography Polymer Sciences Characterization and Evaluation of Materials Continuum Mechanics and Mechanics of Materials Materials Science
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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