Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Design and realization of an orange–red phosphor samarium-activated diphosphate Na5Bi1−xSmx(P2O7)2
Ist Teil von
Journal of materials science. Materials in electronics, 2020-06, Vol.31 (12), p.9911-9918
Ort / Verlag
New York: Springer US
Erscheinungsjahr
2020
Link zum Volltext
Quelle
SpringerLink (Online service)
Beschreibungen/Notizen
Recently, rare-earth-activated phosphors have been excessively studied for applications in field of white light-emitting diodes (W-LEDs). In this work, a series of Sm
3+
-doped Na
5
Bi(P
2
O
7
)
2
phosphors have been synthesized via traditional high-temperature solid-state reaction method. The purity and phase structure were verified by powder X-ray diffraction (XRD) analysis. Owing to the
4
G
5/2
→
6
H
7/2
transition of Sm
3+
, Na
5
Bi
1−
x
Sm
x
(P
2
O
7
)
2
phosphors show intense orange–red emission centered at 600 nm under near-UV light (403 nm) excitation. The 4% Sm
3+
ion is the optimum doping concentration. The concentration quenching dominant mechanism is the d−d interaction. Moreover, phosphors Na
5
Bi
0.96
Sm
0.04
(P
2
O
7
)
2
show good thermal stability, restraining 79.4% at 150 °C of that measured at 25 °C. The CIE coordinates of phosphor Na
5
Bi
0.96
Sm
0.04
(P
2
O
7
)
2
were calculated to be (0.573, 0.414). Therefore, phosphor Na
5
Bi
1−
x
Sm
x
(P
2
O
7
)
2
could be potentially used as an orange–red phosphor for W-LEDs.