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1. 哈尔滨工程大学 生物医学材料与工程研究中心
2. 哈尔滨理工大学 材料科学与工程学院
收稿:2009-01-13,
修回:1900-1-2,
网络首发:2009-12-30,
纸质出版:2009-12-30
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王 香, 马旭梁, 封 雪, 等. ZnSe、ZnS量子点的可控合成与表征[J]. 发光学报, 2009,30(6):818-823.
WANG Xiang, MA Xu-liang, FENG Xue, et al. Controlled Synthesis and Characterization of ZnSe and ZnS Quantum Dots[J]. Chinese Journal of Luminescence, 2009, 30(6): 818-823.
采用改进后的合成方法
以Se和ZnO粉末为原料
在十六胺(HDA)、月桂酸(LA)和三辛基膦(TOP)有机溶剂体系中合成了胶体ZnSe和ZnS量子点。主要研究了溶剂配比、反应温度及生长时间对ZnSe量子点粒径和光学性质的影响。结果表明:制得的ZnSe和ZnS量子点均是纤锌矿型结构
且具有较好的尺寸均匀性、分散性及荧光特性。粒子直径可控制在4.5~8 nm范围内。采用参数
n
(ZnO) :
n
(HDA) :
n
(LA)=1 : 2.1 : 5.2
c
(TOPSe)=1 mol/L
在280 ℃成核
240 ℃生长条件下合成的ZnSe量子点具有最佳的尺寸范围
并且随着生长时间的延长
粒径变大
荧光发射峰明显红移。
paper
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