Fine tuning the microenvironment of [EuW10O36]9- anion leads to the large enhancement of the red light luminescence

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dc.contributor.author Omwoma, Solomon
dc.contributor.author Lagat, Silah C.
dc.contributor.author Lalah, Joseph O.
dc.date.accessioned 2018-02-02T07:49:03Z
dc.date.available 2018-02-02T07:49:03Z
dc.date.issued 2017-12
dc.identifier.uri https://www.sciencedirect.com/science/article/pii/S0022231317312632
dc.identifier.uri https://doi.org/10.1016/j.jlumin.2017.12.052
dc.identifier.uri http://62.24.102.115:8080/xmlui/handle/123456789/1213
dc.description.abstract The polyoxometalate (POM) anion of europium (III) decatungstate [EuW10O36]9-exhibits great luminescence quantum yields of approximately 67% but suffers reduced red light emissions that are due to the low 5D0→7F2 transmissions. Fine tuning the microenvironment around [EuW10O36]9- anion through intercalation into different compositions of layered double hydroxides (LDHs) materials, greatly enhances the 5D0→7F2 transmissions. The positive nanosheets in LDHs provide a conducive microenvironment for strong transitions of 5D0→7F2 to occur. The ratio I(5D0→7F2)/I(5D0→7F1) for the observed intensities vary from 0.44 for [EuW10O36]9-ion to 14.08, 6.20, 1.75 and 1.59 in Mg2Al-EuW10O36, LYbH-EuW10O36, Zn2Al-EuW10O36 and LEuH-EuW10O36 materials respectively (Mg2Al = magnesium aluminum LDHs, Zn2Al = Zinc aluminum LDHs, LYbH = layered ytterbium hydroxide LDHs, and LEuH = layered europium hydroxide LDHs). As such, these materials can find a wide application in processes that require the red light luminescence. en_US
dc.description.sponsorship https://doi.org/10.1016/j.jlumin.2017.12.052 en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Volume 196, April 2018, Pages 294-301;
dc.subject Photoluminescene en_US
dc.subject Layered double hydroxides en_US
dc.subject Euopium(III)decatungstate ion en_US
dc.title Fine tuning the microenvironment of [EuW10O36]9- anion leads to the large enhancement of the red light luminescence en_US
dc.type Article en_US


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