Abstract
Bright luminescence of Eu(II) doped into the cubic perovskites KMgH3 and mixed crystal compounds LiBaxSr(1-x)H(3) was observed and assigned to the 4f(6)5d-4f(7) emission of Eu2+. KMgH3: Eu2+ shows an extremely bright yellow emission, whereas the wavelength of the emission maximum in LiBaxSr(1-x)H(3): Eu2+ depends on the value of x and ranges from yellow to green. Furthermore, an extremely wide red shift in the emission energy is observed for the orthorhombically distorted perovskite NaMgH3: Eu2+. Additionally, we review the crystal structure of KMgH3 using density functional calculations.
| Original language | English |
|---|---|
| Pages (from-to) | 4799-4804 |
| Number of pages | 6 |
| Journal | Journal of Materials Chemistry A |
| Volume | 2 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - 2014 |
Funding
We are grateful to the Landesgraduiertenforderung Saar for a PhD research fellowship and the Deutsche Forschungsgemeinscha. (DFG) for financial support (grants KO1803/3-1 and KO1803/7-1). We also thank Wenjie Yan and PD Dr Richard Weihrich for temperature-dependent XRD measurements of KMgH<INF>3</INF>. Furthermore, one of us wants to thank Dr Robert Haberkorn for insightful discussions.
Keywords
- VIBRONIC TRANSITIONS
- DIVALENT EUROPIUM
- ENERGY
- DIFFRACTION
- HYDRIDES
- EU2+