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SnCN 2 : A Carbodiimide with an Innovative Approach for Energy Storage Systems and Phosphors in Modern LED Technology
Author(s) -
Braun Cordula,
Mereacre Liuda,
Hua Weibo,
Stürzer Tobias,
Ponomarev Ilia,
Kroll Peter,
Slabon Adam,
Chen Zheng,
Damour Yann,
Rocquefelte Xavier,
Halet JeanFrançois,
Indris Sylvio
Publication year - 2020
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.202000765
Subject(s) - carbodiimide , materials science , xanes , crystal structure , phosphor , spectroscopy , doping , x ray photoelectron spectroscopy , optoelectronics , analytical chemistry (journal) , chemical engineering , crystallography , chemistry , organic chemistry , polymer chemistry , physics , quantum mechanics , engineering
The carbodiimide SnCN 2 was prepared at low temperatures (400 °C–550 °C) by using a patented urea precursor route. The crystal structure of SnCN 2 was determined from single‐crystal data in space group C 2 /c (no. 15) with a =9.1547(5), b =5.0209(3), c =6.0903(3) Å, β =117.672(3), V =247.92 Å 3 and Z =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 Mössbauer spectroscopy, thermal expansion, IR spectroscopy, Mott‐Schottky analysis) were carried out. The electronic structure of the n ‐type semiconductor SnCN 2 has been probed using X‐ray absorption spectroscopy and density functional theory (DFT) computations.