Synthesis and luminescence properties of Sm3+-doped La2WyMo2−yO9 orange-red phosphors
La2WyMo2−yO9 phosphors activated with the trivalent rare-earth Sm3+ were synthesized via a traditional solid-state reaction, their structure and luminescence properties were investigated by using X-ray diffractometer and fluorescence spectrophotometer. There were three emission peaks centered at 563...
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Published in | Physica. B, Condensed matter Vol. 433; pp. 133 - 137 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Kidlington
Elsevier B.V
15.01.2014
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | La2WyMo2−yO9 phosphors activated with the trivalent rare-earth Sm3+ were synthesized via a traditional solid-state reaction, their structure and luminescence properties were investigated by using X-ray diffractometer and fluorescence spectrophotometer. There were three emission peaks centered at 563, 599, and 646nm corresponding to the 4G5/2→6H5/2, 4G5/2→6H7/2, 4G5/2→6H9/2 transitions of Sm3+ under the 402nm ultraviolet excitation. Investigation on Sm3+ concentration-dependent emission spectra indicated that La1.97WMoO9:3% Sm3+ phosphor exhibited the strongest orange-red emission with a CIE value of (0.5425, 0.4541). Therefore, it is considered to be a new promising orange-red emitting phosphor for white light emitting diode (LED) application. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0921-4526 1873-2135 |
DOI: | 10.1016/j.physb.2013.10.028 |