SnCN2: A Carbodiimide with an Innovative Approach for Energy Storage Systems and Phosphors in Modern LED Technology
Résumé
The carbodiimide SnCN(2)was prepared at low temperatures (400 degrees C-550 degrees C) by using a patented urea precursor route. The crystal structure of SnCN(2)was determined from single-crystal data in space groupC2/c(no. 15) witha=9.1547(5),b=5.0209(3),c=6.0903(3) angstrom,beta=117.672(3),V=247.92 angstrom(3)andZ=4. As carbodiimide compounds display remarkably high thermal and chemical resistivity, SnCN(2)has been doped with Eu and Tb to test it for its application in future phosphor-converted LEDs. This doping of SnCN(2)proved that a color tuning of the carbodiimide host with different activator ions and the combination of the latter ones is possible. Additionally, as the search for novel high-performing electrode materials is essential for current battery technologies, this carbodiimide has been investigated concerning its use in lithium-ion batteries. To further elucidate its application possibilities in materials science, several characterization steps and physical measurements (XRD, in situ XANES, Sn Mossbauer spectroscopy, thermal expansion, IR spectroscopy, Mott-Schottky analysis) were carried out. The electronic structure of then-type semiconductor SnCN(2)has been probed using X-ray absorption spectroscopy and density functional theory (DFT) computations.
Domaines
ChimieOrigine | Publication financée par une institution |
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