International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1, Tsukuba, Ibaraki 3050044, Japan.
ACS Nano. 2014 Jul 22;8(7):6516-9. doi: 10.1021/nn502999g. Epub 2014 Jul 2.
Silicon has a diamond-like cubic crystal lattice for which two-dimensional (2D) nanometer thickness nanosheet crystallization appears not to be trivial. However, in this issue of ACS Nano, the group led by Heon-Jin Choi demonstrates the gas-phase dendritic growth of Si nanosheets, only 1 to 13 nm thick. Moreover, such nanosheets display strong thickness-dependent photoluminescence in a visible range with red, green, and blue emission each documented.
硅具有类金刚石立方晶体结构，二维（2D）纳米厚度纳米片的结晶似乎并非易事。然而，在本期的《美国化学会纳米》杂志中，崔桓进（Heon-Jin Choi）领导的研究团队展示了气相树枝状生长的硅纳米片，其厚度仅为 1 到 13 纳米。此外，这些纳米片在可见光范围内表现出强烈的厚度依赖性光致发光，其中红色、绿色和蓝色发光均有记录。
