Continuous production of Cu inf 2 inf ZnSnS inf 4 inf nanocrystals in a flow reactor Journal Article


Author(s): Shavel, Alexey; Cadavid, Doris; Ibanez, Maria; Carrete, Alex; Cabot, Andreu
Article Title: Continuous production of Cu inf 2 inf ZnSnS inf 4 inf nanocrystals in a flow reactor
Affiliation
Abstract: A procedure for the continuous production of Cu 2ZnSnS 4 (CZTS) nanoparticles with controlled composition is presented. CZTS nanoparticles were prepared through the reaction of the metals' amino complexes with elemental sulfur in a continuous-flow reactor at moderate temperatures (300-330 °C). High-resolution transmission electron microscopy and X-ray diffraction analysis showed the nanocrystals to have a crystallographic structure compatible with that of the kesterite. Chemical characterization of the materials showed the presence of the four elements in each individual nanocrystal. Composition control was achieved by adjusting the solution flow rate through the reactor and the proper choice of the nominal precursor concentration within the flowing solution. Single-particle analysis revealed a composition distribution within each sample, which was optimized at the highest synthesis temperatures used.
Journal Title: Journal of the American Chemical Society
Volume: 134
Issue 3
ISSN: 1520-5126
Publisher: ACS  
Date Published: 2012-01-02
Start Page: 1438
End Page: 1441
DOI: 10.1021/ja209688a
Notes: This work was supported by the Spanish MICINN Projects MAT2008-05779, MAT2008-03400-E/MAT, CDS2009-00050, CSD2009-00013, and ENE2008-03277-E/CON. M.I. thanks the Spanish MICINN for her Ph.D. grant. A.C. is thankful for financial support through the Ramón y Cajal Program.
Open access: no