| 摘要 |
PURPOSE:To enhance the efficiency of light emission and to enable to control the wavelength of an emitted light in a wide range by a method wherein a three-dimensional reticulate structure is formed by mutually coupling the silicon microscopic cluster of 3-100Angstrom in size and a cluster, and a one-dimensional chain consisting of silicon and hydrogen is constituted. CONSTITUTION:A light-emitting material has the three-dimensional reticulate structure consisting of a one-dimensional chain 1 and a crystal state or amrphous Si microscopic cluster 2 which is coupled to both ends of the one- dimensional chain 1. The one-dimensional chain 1 is the polysilene consisting of Si and H. The band gap of the polysilene is 6-3eV, and on the other hand, as the band gap of the Si cluster is 1.1eV or thereabout, the Si cluster performs the function as the three-dimensional quantum well. By controlling the size of the cluster within the range of 3-100Angstrom , the difference of its energy can be controlled within the range of 1.1-3eV. When the above is converted into the wavelength, it becomes 400-1,100nm. Accordingly, the luminous wavelength of the light-emitting material can be controlled at the specific wavelength within the range of 400-1,100nm. |
