MnS hierarchical hollow spheres with novel shell structure.
MnS hierarchical hollow spheres with novel shell structure.
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DOI：
10.1021/jp063698x
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发表时间：
2006-10
期刊：
影响因子：
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通讯作者：
Yao Cheng;Yuansheng Wang;Chong Jia;F. Bao
中科院分区：
文献类型：
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作者：
Yao Cheng;Yuansheng Wang;Chong Jia;F. Bao
采用简单的溶液法制备了高收率的具有新型分级结构的MnS微球。场发射扫描电子显微镜和透射电子显微镜分析表明，微球具有核壳结构：内部空心球由纳米棒阵列组成的外壳覆盖。有趣的是，纳米棒是具有大量堆垛层错/孪晶的纤锌矿（WZ）/锌错（ZB）相混合物。WZ和ZB沿着纳米棒生长方向的交替排列使其具有量子阱的特征。此外，WZ/ZB混合结构也可视为第二类同质异质结构。所有这些特性都表明这种新型的核壳结构在量子阱光电和异质结构光电导领域具有巨大的应用潜力。
High yields of MnS microspheres with novel hierarchical structure were prepared through a simple solution method. Field emission scanning electron microscopy and transmission electron microscopy analyses reveal that the microsphere has a core-shell structure: the interior hollow sphere is covered by a shell consisting of nanorod arrays. Interestingly, the nanorod is a wurtzite (WZ)/zinc blende (ZB) phase admixture with a large amount of stacking faults/twins. The alternation of WZ and ZB along the growth direction of the nanorod enables it to exhibit the features of a quantum well. Furthermore, the WZ/ZB admixture structure could also be regarded as a type II homomaterial heterostructure. All these features imply that the novel core-shell structure has great potential for applications, among them the quantum well photoelectrical and heterostructure photoconduction fields.