Cu2ZnSnS4 纳米晶的尺寸控制和量子限域。
Size control and quantum confinement in Cu2ZnSnS4 nanocrystals.
机构信息
Department of Chemical Engineering and Materials Science, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, USA.
出版信息
Chem Commun (Camb). 2011 Nov 14;47(42):11721-3. doi: 10.1039/c1cc14687d. Epub 2011 Sep 27.
PMID:21952415
Abstract
Starting with metal dithiocarbamate complexes, we synthesize colloidal Cu(2)ZnSnS(4) (CZTS) nanocrystals with diameters ranging from 2 to 7 nm. Structural and Raman scattering data confirm that CZTS is obtained rather than other possible material phases. The optical absorption spectra of nanocrystals with diameters less than 3 nm show a shift to higher energy due to quantum confinement.
摘要
从金属二硫代氨基甲酸盐配合物出发，我们合成了直径在 2 至 7nm 之间的胶体 Cu(2)ZnSnS(4) (CZTS)纳米晶。结构和拉曼散射数据证实，得到的是 CZTS，而不是其他可能的材料相。直径小于 3nm 的纳米晶的光吸收谱由于量子限制而向高能方向移动。
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