Synthesis of quaternary chalcogenide nanocrystals: stannite Cu(2)Zn(x)Sn(y)Se(1+x+2y).
Synthesis of quaternary chalcogenide nanocrystals: stannite Cu(2)Zn(x)Sn(y)Se(1+x+2y).
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DOI：
10.1021/ja909498c
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发表时间：
2010-03
影响因子：
15
通讯作者：
A. Shavel;J. Arbiol;A. Cabot
中科院分区：
文献类型：
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作者：
A. Shavel;J. Arbiol;A. Cabot
成功合成了 Cu(2)Zn(x)Sn(y)Se(1+x+2y) (CZTSe) 纳米颗粒。通过金属氨基配合物与硒在三辛基膦中的饱和溶液在高温下反应，制备了近单分散且高度多面的 CZTSe 纳米颗粒。高分辨率透射电子显微镜和X射线衍射分析表明所制备的纳米晶具有四方Cu(2)ZnSnSe(4)晶体结构。纳米级分辨电子能量损失光谱图像显示每个纳米晶体中都存在四种元素。对颗粒化学成分的进一步分析表明，纳米晶体始终缺乏锌和锡。
A successful synthesis of Cu(2)Zn(x)Sn(y)Se(1+x+2y) (CZTSe) nanoparticles is presented. Nearly monodisperse and highly faceted CZTSe nanoparticles were prepared through reaction of metal amino complexes with saturated solutions of selenium in trioctylphosphine at high temperature. High-resolution transmission electron microscopy and X-ray diffraction analysis showed the prepared nanocrystals to have the tetragonal Cu(2)ZnSnSe(4) crystallographic structure. Nanoscale-resolved electron energy loss spectroscopy images showed the presence of the four elements in each individual nanocrystal. Further analyses of the particles' chemical composition showed the nanocrystals to be consistently Zn- and Sn-poor.