Luminescence 3D-ordered porous materials composed of CdSe and CdTe nanocrystals.
Luminescence 3D-ordered porous materials composed of CdSe and CdTe nanocrystals.
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DOI：
10.1021/jp050242r
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发表时间：
2005-05
期刊：
影响因子：
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通讯作者：
Linglu Yang;Zhaohui Yang;W. Cao;L. Chen;Jun Xu;Huizhen Zhang
中科院分区：
文献类型：
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作者：
Linglu Yang;Zhaohui Yang;W. Cao;L. Chen;Jun Xu;Huizhen Zhang
采用聚合物珠与纳米晶共沉积的方法，将纳米晶填充到胶体晶体的空隙中，制备了CdTe或CdSe纳米晶发光多孔材料。用四氢呋喃（THF）去除微珠后，得到了三维有序的CdTe（或CdSe）纳米材料。纳米碳化物多孔材料的最大光致发光波长与水相色散相比有明显的红移。在高能电子的激发下，CdTe和CdSe纳米材料会发射光子，这些光子可以被收集形成阴极发光（CL）图像。
The luminescence porous materials of CdTe or CdSe nanocrystals (NCs) were prepared by filling the corresponding NCs into the voids of colloidal crystal by co-deposition of polymer beads and NCs. After removing the beads with tetrahydrofuran (THF), the 3D-ordered porous materials of CdTe (or CdSe) NCs were obtained. The wavelength of maximum photoluminescence of the NCs porous material shows obvious red shift compared with their aqueous dispersion. Under the excitation of high-energy electron the porous materials of CdTe and CdSe NCs will emit photons that can be collected to form a cathode luminescence (CL) image.