Yao Weitang, Yu Shu-Hong, Jiang Jun, Zhang Lin
Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Structure Research Laboratory of CAS, School of Chemistry and Materials, University of Science and Technology of China, Hefei, Anhui 230026 (China).
Chemistry. 2006 Feb 20;12(7):2066-72. doi: 10.1002/chem.200500835.
Complex wurtzite ZnSe microspheres with hierarchical fractal structure and showing strong quantum-size effects can be prepared easily by a mild solvothermal reaction in a diethylenetriamine (DETA)-deionized water (DIW) binary solution. The ZnSe microspheres are made up of nanosheets, each formed by the face-to-face pairing of two individual nanosheets. In addition, high-order, flowerlike hierarchical structures are formed by the attachment of flexible, uniform nanofibers to the exposed faces of each nanosheet pair. The surface morphology of the nanosheets changed as reaction time increased and the detailed phase-transformation and shape-evolution processes were studied. This approach could provide an effective strategy for tuning the electronic and optical properties of semiconductors, with special advantages over the traditional high-temperature approach, and could be extended to access other semiconductor materials with unusual morphologies and structures.
通过在二乙烯三胺（DETA）-去离子水（DIW）二元溶液中进行温和的溶剂热反应，可以轻松制备出具有分级分形结构且表现出强量子尺寸效应的复杂纤锌矿ZnSe微球。ZnSe微球由纳米片组成，每个纳米片由两个单独纳米片面对面配对形成。此外，高阶花状分级结构是通过柔性、均匀的纳米纤维附着在每个纳米片对的暴露面上形成的。随着反应时间的增加，纳米片的表面形态发生变化，并对详细的相变和形状演变过程进行了研究。这种方法可以为调节半导体的电子和光学性质提供一种有效的策略，相对于传统的高温方法具有特殊优势，并且可以扩展到制备具有不寻常形态和结构的其他半导体材料。
