For the first time, Cu2MnSnS4 nanocrystals with wurtzite and zincblende structure are synthesized by injecting an oleylamine solution of sulfur powder and thiourea, resp., into an oleylamine solution of Cu(OAc)2, SnCl4, and Mn(OAc)2 at 270 °C.
For the first time, Cu2MnSnS4 nanocrystals with wurtzite and zincblende structure are synthesized by injecting an oleylamine solution of sulfur powder and thiourea, resp., into an oleylamine solution of Cu(OAc)2, SnCl4, and Mn(OAc)2 at 270 °C.
Diluted magnetic semiconductor Cu 2 FeSnS 4 nanocrystals with a novel zincblende structure have been successfully synthesized by a hot-injection approach. Cu + , Fe 2+ , and Sn 4+ ions occupy the same position in the zincblende unit cell, and their occupancy possibilities are 1/2, 1/4, and 1/4, respectively. The nanocrystals were characterized by means of X-ray diffraction (XRD), transmission electron microscopy (TEM), selected area electron diffraction (SAED), energy-dispersive spectroscopy (EDS), and UV-vis-NIR absorption spectroscopy. The nanocrystals have an average size of 7.5 nm and a band gap of 1.1 eV and show a weak ferromagnetic behavior at low temperature.
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