A general strategy for synthesis of quaternary semiconductor Cu2MSnS4 (M = Co2+, Fe2+, Ni2+, Mn2+) nanocrystals
2012; Royal Society of Chemistry; Volume: 22; Issue: 43 Linguagem: Inglês
10.1039/c2jm33574c
ISSN1364-5501
AutoresYong Cui, Ruiping Deng, Gang Wang, Daocheng Pan,
Tópico(s)Copper-based nanomaterials and applications
ResumoQuaternary semiconductor Cu2MSnS4 (M = Co2+, Fe2+, Ni2+, Mn2+) nanocrystals have been successfully synthesized via a simple and mild solvothermal method. Cu2FeSnS4 and Cu2CoSnS4 show a spherical shape; Cu2NiSnS4 and Cu2MnSnS4 possess a nail-like structure and a rod-like structure. The four types of nanocrystals exhibit significantly different magnetic properties. Cu2FeSnS4 and Cu2CoSnS4 nanoparticles show ferromagnetic behavior; Cu2MnSnS4 and Cu2NiSnS4 nanorods exhibit superparamagnetic behavior at low temperature. The band gaps of Cu2MSnS4 (M = Co, Fe, Ni, Mn) nanocrystals are in the range of 1.2–1.5 eV, indicating a high potential application in low-cost thin film solar cells.
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