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Erschienen in:
27.05.2019
Synthesis and characterization of CuFeS2 and Se doped CuFeS2−xSex nanoparticles
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 13/2019
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Abstract
CuFeS2, CuFeS1.8Se0.2, CuFeS1.6Se0.4 and CuFeS1.4Se0.6 nanoparticles were synthesized by a solvothermal method at 190 °C for 30 h. The obtained samples were tested by XRD, FTIR, BET, SEM and DRUVS, which explore the influence of Se-doping on grain size, structure, morphology and energy gap. Results show that the synthetic particles are nano-scale of chalcopyrite and with the increase of Se-doping content in CuFeS2, the grain size increases and the lattice parameters make a difference accordingly. Pore structure exists in CuFeS2 and CuFeS2−xSex, but their pore diameter and volume are tiny. Chalcopyrite nanoparticles with tetragonal phase are well-crystallized and the particle dispersion is improved after Se-doping. The band gap of CuFeS2 can be adjusted by Se-doping.