White-light emission from magic-sized cadmium selenide nanocrystals
White-light emission from magic-sized cadmium selenide nanocrystals
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DOI：
10.1021/ja055470d
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发表时间：
2005-11-09
影响因子：
15
通讯作者：
Rosenthal, SJ
中科院分区：
文献类型：
--
作者：
Bowers, MJ;McBride, JR;Rosenthal, SJ
采用热解法合成了大小不等的硒化镉（CdSe）纳米晶。这些超小的纳米晶体表现出宽带发射（420 - 710 nm），覆盖了大部分可见光谱，同时不会受到自吸收的影响。这种行为是极窄的尺寸分布和异常大的斯托克斯位移（40 - 50 nm）的直接结果。这些超小纳米晶体的固有特性使它们成为固态照明应用的理想材料，也是研究分子到纳米晶体转变的理想平台。
Magic-sized cadmium selenide (CdSe) nanocrystals have been pyrolytically synthesized. These ultra-small nanocrystals exhibit broadband emission (420−710 nm) that covers most of the visible spectrum while not suffering from self absorption. This behavior is a direct result of the extremely narrow size distribution and unusually large Stokes shift (40−50 nm). The intrinsic properties of these ultra-small nanocrystals make them an ideal material for applications in solid state lighting and also the perfect platform to study the molecule-to-nanocrystal transition.