Electroluminescence of Si Nanocrystal-Doped SiO2

We perform a comparative st udy on the electroluminescence （EL） and photoluminescence （PL） of Si nanocrystaldoped SiO2 （nc-Si：SiO2） and SiO2, and clarify whether the contribution from Si nanocrystals in the EL of nc-Si：SiO2 truly exists. The results unambiguously indicate the presence of EL of Si nanocrystals. The difference of peak positions between the EL and PL spectra are discussed. It is found that the normal method of passivation to enhance the PL of Si nanocrystals is not equally effective for the EL, hence new methods need to be explored to promote the EL of Si nanocrystals.

中国传统文化元素与现代海报设计

中国传统文化是通过不同的文化形态来表示的各种民族文明,风俗,精神的总称。中国传统文化元素主要表现为纹理、书法、图案、颜色、材质、构图方式等。是我国现代设计的文化根基,是现代设计的源泉,具有深厚的文化内涵和历史背景,蕴藏着中华民族千百年沿袭至今的弥足珍贵的文化遗产。只有依托传统文化元素,现代设计才能更好地展现中国特色。传统文化元素在海报设计中的运用同样十分广泛。