Preparation and characterization of monodisperse PbSe semiconductor nanocrystals in a noncoordinating solvent
Preparation and characterization of monodisperse PbSe semiconductor nanocrystals in a noncoordinating solvent
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DOI：
10.1021/cm049476y
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发表时间：
2004-08-24
影响因子：
8.6
通讯作者：
Colvin, VL
中科院分区：
文献类型：
--
作者：
Yu, WW;Falkner, JC;Colvin, VL
在非配位溶剂（1-十八烯）中合成了球形PbSe半导体纳米晶，其近红外吸收波长为1100-2520 nm（对应于直径为3-13 nm）。所制备的PbSe半导体纳米晶体具有非常窄的尺寸分布（σ全等至5-7%），而无需任何合成后的尺寸选择。高分辨透射电子显微镜（TEM），电子衍射和X射线衍射表明，纳米晶颗粒是单一的岩盐PbSe域。这些材料的水溶性形式通过简单的表面处理产生。
Spherical PbSe semiconductor nanocrystals with near-infrared absorption of 1100-2520 nm (corresponding to diameters of 3-13 nm) were synthesized in a noncoordinating solvent (1-octadecene). The as-prepared PbSe semiconductor nanocrystals have very narrow size distributions (sigma congruent to 5-7%) without any postsynthetic size selection. High-resolution transmission electron microscopy (TEM), electron diffraction, and X-ray diffraction show that the nanocrystalline particles are single domains of rock-salt PbSe. A water-soluble form of these materials was generated through simple surface treatments.