ISIS Neutron and Muon Source Data Journal

Crystal structure of the new oxyapatite-based ALa9(GeO4)6O2 (A = Li-Rb) phosphors

Abstract: Advanced luminescent materials exhibiting downconversion are important components of next-generation photovoltaic devices aimed at minimizing the spectral mismatch losses in solar cells. We showed that germanates with the general formula ALa9(GeO4)6O2 (A = Li, Na, K, Rb) can effectively downconvert high-energy photons from the visible and near-IR parts of the spectrum into far-IR photons. The optical transitions of many rare-earth ions are influenced by small changes in the crystal structure of their hosts. In order to control luminescent properties of these materials, neutron diffraction experiments are essential. The experiments will help to determine the oxygen and alkaline metal positions, cation distributions, and to refine oxygen deficiency. Obtained structural models will be used for DFT calculations aimed at explaining the differences in luminescent properties of these compounds.

Principal Investigator: Dr Nadezda Tarakina
Local Contact: Dr Dominic Fortes

DOI: 10.5286/ISIS.E.RB1720175

ISIS Experiment Number: RB1720175

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Nadezda Tarakina et al; (2017): Crystal structure of the new oxyapatite-based ALa9(GeO4)6O2 (A = Li-Rb) phosphors, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1720175

Data is released under the CC-BY-4.0 license.