title: Synthesis of Cu3Sn alloy nanocrystals through sequential reduction induced by gradual increase of the reaction temperature.
abstract: Cu3Sn alloy nanocrystals are synthesized by sequential reduction of Cu and Sn precursors through a gradual increase of the reaction temperature. By transmission electron microscopy (TEM), energy-dispersive X-ray spectroscopy (EDS), UV/Vis spectroscopy, and X-ray diffraction (XRD) analyses, the alloy formation mechanism of Cu3Sn nanocrystals has been studied. The incremental increase of the reaction temperature sequentially induces the reduction of Sn, the diffusion of Sn into the preformed Cu nanocrystals, resulting in the intermediate phase of Cu-Sn alloy nanocrystals, and then the formation of Cu3Sn alloy nanocrystals. We anticipate that the synthesis of Cu3Sn alloy nanocrystals encourages studies toward the synthesis of various alloy nanomaterials.
authors.affiliation: Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742 (Korea).
authors.forename: Sanghun
authors.initials: S
authors.lastname: Cho
authors.forename: Dong-Hun
authors.initials: DH
authors.lastname: Shin
authors.forename: Zhenxing
authors.initials: Z
authors.lastname: Yin
authors.forename: Chaedong
authors.initials: C
authors.lastname: Lee
authors.forename: Si Yun
authors.initials: SY
authors.lastname: Park
authors.forename: Jeeyoung
authors.initials: J
authors.lastname: Yoo
authors.forename: Yuanzhe
authors.initials: Y
authors.lastname: Piao
authors.forename: Youn Sang
authors.initials: YS
authors.lastname: Kim
keywords: Cu3Sn nanocrystals; alloys; copper alloy; nanocrystals; tin alloy